Datasheet 1.8V to 5.5V, 300mA 1ch Synchronous Boost DC/DC Converter BU33DV7NUX General Description The BU33DV7NUX devices provide a power supply solution for products powered by either two-cell alkaline, NiCd or NiMH, or one-cell Li-ion or Li-polymer battery. Output currents can go as high as 300mA while using two alkaline, and discharge it down to 1.8 V. With the MODE pin, the BU33DV7NUX provides mode selection of PWM control or PFM/PWM automatic switching control. When load current is large, the product switches automatically to the PWM mode so that high efficiency is achievable over a wide range of load conditions. The maximum peak current in the boost switch is typically limited to a value of 1.85A. BU33DV7NUX output voltage is fixed by an internal resistor divider. When VIN voltage is higher than 3.3 V, Vout is connected with Vin. Features Synchronous Boost DC/DC Converter(PFM/PWM) 300mA @Vout=3.3V, Vin=1.8V Fixed Output voltage (3.3V) Pass-Through Function1 (VIN > VOUT<3.3V>) Thermal Shutdown VSON010X3030 (Small Package) Key Specifications Input voltage range: 1.8V to 5.5V Output Voltage range: 3.23V to 3.37V Output current: 300mA (Max.) Switching frequency: 0.6MHz (Typ.) Pch FET ON resistance: 160m (Typ.) Nch FET ON resistance: 90m (Typ.) Standby current (MODE=0V): 4.5A (Max.) Standby current (MODE=VIN): 1.5A (Max.) Operating temperature range: -40to+85 Typical Application Circuit Available Features with MODE=0V Pass-Through Function2 during EN-OFF Disconnect Function during UVLO UVLO-detect Voltage:1.8V(typ) UVLO-release Voltage:2.0V(typ) PWM(Switching Frequency 600kHz) Available Features with MODE=VIN Disconnect Function during EN-OFF and UVLO UVLO-detect Voltage:1.8V(typ) UVLO-release Voltage:2.0V(typ) PFM/PWM(Switching Frequency to 600kHz) Applications Two-Cell Alkaline, NiCd or NiMH or Single-Cell Li Battery-Powered Products Portable Audio Players PDA Cellular Phones Personal Medical Products Package 10-pin small "VSON010X3030" package. <3.1mm (Typ.) x 3.1mm (Typ.) x 0.6mm (Max.)> VSON010X3030 Typical Performance characteristics Necessary at PFM Efficiency Temp=25 R1 100.0 VIN C4 SW L1 C3 90.0 C2 80.0 COMP MODE PFM2.4V 70.0 PGND PFM1.8V Efficiency [%] C1 VOUT OUT AGND RSTBC 60.0 PWM1.8V 50.0 40.0 PWM2.4V 30.0 20.0 RSTBO EN 10.0 0.0 0.1 1 10 100 1000 Iout [mA] Figure 1. Application Circuit Product structureSilicon monolithic integrated circuit .www.rohm.com (c) 2012 ROHM Co., Ltd. All rights reserved. TSZ2211114001 Figure 2. Efficiency This product is not designed protection against radioactive rays. 1/24 TSZ02201-0Q1Q0AH00110-1-2 02.Aug.2012 Rev.001 Datasheet BU33DV7NUX Absolute maximum ratings(Ta=25) Parameter Maximum applied voltage Symbol Vmax Ratings 7.0 Unit V Power dissipation1 Pd1 464 (Note1) mW Power dissipation2 Pd2 1440 (Note2) mW Operating temperature range Storage temperature range Topr Tstr -40 to +85 -55 to +125 o o Condition 1layer(74.2x74.2mm)board 2 2 (Surface heat radiation copper foil6.28mm ) 4layer(74.2x74.2mm)board 2 (1,4layer heat radiation copper foil6.28mm ) 2 (2,3layer heat radiation copper foil5500mm ) C C *1 When it is used by more than Ta=25, it is reduced by 4.64mW/. *2 When it is used by more than Ta=25, it is reduced by 14.4mW/. Operating conditions Parameter Power supply voltage range Symbol VCC Ratings 1.8 to 5.5 Unit V Condition VIN terminal voltage Electrical characteristics [BU34DV7NUX] (Unless otherwise specified Ta=25VIN=2.4V) Parameter Symbol Min. Typ. Max. Unit Condition Circuit current1(EN=0V) Circuit current2(EN=0V) ICC1A ICC2A - 1.6 0.3 4.5 1.5 A A EN=0V,MODE=0V EN=0V,MODE=VIN Circuit current1 no switching (EN=VIN,VOUT=5V) ICC1B - 140 250 A EN=VIN,MODE=0V, VOUT=5.0V (not include SW) ICC2B - 25 50 A 0.5 3.23 1.4 0.9 0.9 VIN-0.2 450 1.9 1.75 3.2 20 3.5 30 0.6 3.3 1.85 0.1 VIN-0.1 600 90 160 1.0 60 2.0 1.8 0.2 3.3 50 0.7 3.37 2.2 0.2 0.2 0.2 750 2.1 1.85 3.4 80 Circuit current2 no switching (EN=VIN,VOUT=5V) Circuit current1(EN=VIN) Circuit current2(EN=VIN) Oscillation frequency Output voltage range Current limit EN Input High EN Input Low MODE Input High MODE Input Low RSTBO output low voltage RSTBO output high voltage RSTBC output resistance SWN1 switch on resistance SWP1 switch on resistance SWN2 switch on resistance SWP2 switch on resistance UVLO Release Threshold UVLO Detect Threshold UVLO Hysteresis VIN Thru VIN Thru Hysteresis ICC1C ICC2C Fsw Vout Ilim VIH_EN VIL_EN VIH_MODE VIL_MODE Vrstol Vrstoh Rrstbc Rswn1 Rswp1 Rswn2 Rswp2 VuvloR VuvloD Vuvlohys Vinthru Vinthruhys .www.rohm.com (c) 2012 ROHM Co., Ltd. All rights reserved. TSZ2211115001 2/24 mA A MHz V A V V V V V V k m m k V V V V mV EN=VIN,MODE=VIN, VOUT=5.0V (not include SW) EN=VIN,MODE=0V, Io=0mA EN=VIN,MODE=VIN, Io=0mA Io=1mA DC - Current Ioi=100uA,MODE=0V Ioi=-100uA,MODE=0V VOUT=3.3V MODE=VIN,EN=0V MODE=0V,EN=0V VIN rising VIN falling TSZ02201-0Q1Q0AH00110-1-2 02.Aug.2012 Rev.001 Datasheet BU33DV7NUX Block diagram RSTBC VIN RSTBO DELAY UVLO VOUT SWN2 SOFT START SWP1 VIN SWP2 MODE CONTROL LOGIC LEVEL SHIFT SW DRIVER VIN SW SWN1 TSD EN OSC + + - SWN3 COMP AGND PGND Figure 3. Circuit Block MODE INPUT PIN EN PIN UVLO UVLO RELEASE VOLTAGE 0V 0V ON 2.0V(typ) FUNCTION DC/DC-control PWM or PFM/PWM - 0V VIN ON 2.0V(typ) PWM VIN 0V OFF - - VIN VIN ON 2.0V(typ) PFM/PWM MODE PIN SW-ON/OFF RSTBO 0V While Soft Start : 0V After Soft Start : VIN 0V While Soft Start : 0V After Soft Start : VIN SWP2 SWN2 SWN3 SWP1 SWN1 ON OFF OFF OFF OFF OFF OFF ON Switching Switching OFF ON OFF OFF OFF OFF OFF ON Switching Switching Pin Configuration A 3.00.1 3.00.1 1PIN MARK 0.08 S 2.00.1 0.5 C0.25 C A B B C 1 10 0.5 S (0.12) Power supply input Inductor connection terminal Phase Compensation Pin Function Select Pin Soft Start Output Pin RSTBO 5 While Soft Start : LOW(GND) After Soft Start : High(VIN) EN=VIN: Power-ON EN 6 EN=GND: Power-OFF RSTBC 7 Low Battery Detect Delay Pin AGND 8 GND PGND 9 GND VOUT 10 Boost voltage output Pin Don't use EN PIN and MODE PIN at open. VSON010X3030 +0.03 0.02 -0.02 1 2 3 4 Terminal circuit C C A C 5 1.20.1 Function 0.6MAX VIN SW COMP MODE Pin No. 0.40.1 Symbol 6 +0.05 0.25 -0.04 (Unit : mm) Figure 4. Package Input-Output Equivalent Circuit I/O equivalent circuit diagram is as follows. .www.rohm.com (c) 2012 ROHM Co., Ltd. All rights reserved. TSZ2211115001 3/24 TSZ02201-0Q1Q0AH00110-1-2 02.Aug.2012 Rev.001 Datasheet BU33DV7NUX Electrical characteristic curves (Reference data) Quiescent Current EN=OFF ICC PWM OUTPUT VOLTAGE EN=OFF PWM 8 7.0 7 6.0 6 5.0 5 4.0 VOUT[V] ICC [A] Ta=85 4 3 Ta=25 Ta=85 3.0 Ta=25 2.0 2 1.0 1 Ta=-40 Ta=-40 0 0.0 0 1 2 3 4 5 6 7 VIN [V] 1 2 3 4 5 6 VIN [V] Figure 5. Quiescent Current PWM .www.rohm.com (c) 2012 ROHM Co., Ltd. All rights reserved. TSZ2211115001 0 Figure 6. Out Put Voltage (EN=OFF) PWM 4/24 TSZ02201-0Q1Q0AH00110-1-2 02.Aug.2012 Rev.001 7 Datasheet BU33DV7NUX Electrical characteristic curves (Reference data) - Continued Quiescent Current - Continued EN=OFF ICC PFM OUTPUT VOLTAGE EN=OFF PFM 8 0.25 7 0.20 6 Ta=85 0.15 VOUT[V] ICC [A] 5 4 Ta=85 3 0.10 Ta=25 2 0.05 Ta=-40 Ta=25 1 0 Ta=-40 0.00 0 1 2 3 4 5 6 7 VIN [V] 0 1 2 3 4 5 6 7 VIN [V] Figure 7. Quiescent Current PFM Figure 8. Out Put Voltage (EN=OFF) PFM Frequency Frequency 800 750 Freq [kHz] 700 Ta=85 650 Ta=25 600 Ta=-40 550 500 1.5 2 2.5 3 3.5 VIN [V] Figure 9. Frequency .www.rohm.com (c) 2012 ROHM Co., Ltd. All rights reserved. TSZ2211115001 5/24 TSZ02201-0Q1Q0AH00110-1-2 02.Aug.2012 Rev.001 Datasheet BU33DV7NUX Electrical characteristic curves (Reference data) - Continued Efficiency Efficiency VIN=2.4V Efficiency VIN=1.8V 100.0 100.0 Ta=-40 90.0 90.0 80.0 80.0 Ta=25 Ta=-40 Ta=25 70.0 Ta=85 60.0 Efficiency [%] Efficiency [%] 60.0 70.0 50.0 40.0 30.0 Ta=85 50.0 40.0 30.0 20.0 20.0 10.0 10.0 0.0 0.0 0.1 1 10 100 1000 0.1 1 10 100 1000 Iout [mA] Iout [mA] Figure 11. Efficiency PWM VIN=2.4V Figure 10. Efficiency PWM VIN=1.8V Efficiency VIN=3.2V 100.0 90.0 80.0 Ta=-40 70.0 Ta=85 Efficiency [%] 60.0 50.0 40.0 30.0 Ta=25 20.0 10.0 0.0 0.1 1 10 100 1000 Iout [mA] Figure 12. Efficiency PWM VIN=3.2V .www.rohm.com (c) 2012 ROHM Co., Ltd. All rights reserved. TSZ2211115001 6/24 TSZ02201-0Q1Q0AH00110-1-2 02.Aug.2012 Rev.001 Datasheet BU33DV7NUX Electrical characteristic curves (Reference data) - Continued Efficiency - Continued Efficiency VIN=1.8V Efficiency VIN=2.4V 100.0 100.0 Ta=-40 Ta=-40 90.0 90.0 80.0 80.0 Ta=85 70.0 70.0 Ta=25 Ta=85 Ta=25 60.0 Efficiency [%] Efficiency [%] 60.0 50.0 40.0 30.0 50.0 40.0 30.0 20.0 20.0 10.0 10.0 0.0 0.0 0.1 1 10 100 1000 Iout [mA] 0.1 1 10 100 1000 Iout [mA] Figure 13. Efficiency PFM VIN=1.8V Figure 14. Efficiency PFM VIN=2.4V Efficiency VIN=3.2V 100.0 Ta=-40 90.0 80.0 70.0 Ta=25 Efficiency [%] 60.0 50.0 Ta=85 40.0 30.0 20.0 10.0 0.0 0.1 1 10 100 1000 Iout [mA] Figure 15. Efficiency PFM VIN=3.2V .www.rohm.com (c) 2012 ROHM Co., Ltd. All rights reserved. TSZ2211115001 7/24 TSZ02201-0Q1Q0AH00110-1-2 02.Aug.2012 Rev.001 Datasheet BU33DV7NUX Electrical characteristic curves (Reference data) - Continued Load Regulation Load Regulation VIN=1.8V Load Regulation VIN=2.4V 3.40 3.40 3.35 3.35 Ta=85 VOUT [V] VOUT [V] Ta=85 3.30 Ta=25 Ta=-40 3.25 3.30 Ta=25 Ta=-40 3.25 3.20 3.20 0 50 100 150 200 250 300 Iout [mA] 0 50 100 150 200 250 300 Iout [mA] Figure 16. Load Regulation PWM VIN=1.8V Figure 17. Load Regulation PWM VIN=2.4V Load Regulation VIN=3.2V 3.40 3.35 VOUT [V] Ta=85 3.30 Ta=25 Ta=-40 3.25 3.20 0 50 100 150 200 250 300 Iout [mA] Figure 18. Load Regulation PWM VIN=3.2V .www.rohm.com (c) 2012 ROHM Co., Ltd. All rights reserved. TSZ2211115001 8/24 TSZ02201-0Q1Q0AH00110-1-2 02.Aug.2012 Rev.001 Datasheet BU33DV7NUX Electrical characteristic curves (Reference data) - Continued Load Regulation - Continued Load Regulation VIN=1.8V Load Regulation VIN=2.4V 3.50 3.50 3.45 3.45 Ta=85 3.40 VOUT [V] VOUT [V] Ta=85 Ta=-40 Ta=25 3.35 3.40 Ta=-40 3.35 3.30 Ta=25 3.30 0 50 100 150 200 250 300 0 Iout [mA] 50 100 150 200 250 300 Iout [mA] Figure 19. Load Regulation PFM VIN=1.8V Figure 20. Load Regulation PFM VIN=2.4V Load Regulation VIN=3.2V 3.50 3.45 VOUT [V] Ta=85 3.40 Ta=25 3.35 Ta=-40 3.30 0 50 100 150 200 250 300 Iout [mA] Figure 21. Load Regulation PFM VIN=3.2V .www.rohm.com (c) 2012 ROHM Co., Ltd. All rights reserved. TSZ2211115001 9/24 TSZ02201-0Q1Q0AH00110-1-2 02.Aug.2012 Rev.001 Datasheet BU33DV7NUX Electrical characteristic curves (Reference data) - Continued Rise ch2:EN 2.0V/di v ch2:EN 2.0V/d i v ch1:VOUT 500mV/di v ch1:VOUT 500mV/d i v ch4:Icoi l 200mA/d i v ch4:Icoi l 200mA/di v ch3:RSTBO 1.0V/d i v ch3:RSTBO 1.0V/d i v Figure 22. RISE [EN : OFF=>ON] PWM VIN=2.4V Io=0mA Figure 23. RISE [EN : OFF=>ON] PFM VIN=2.4V Io=0mA ch2:EN 2.0V/d i v ch2:EN 2.0V/di v ch1:VOUT 500mV/d i v ch1:VOUT 500mV/d i v ch4:Icoi l 200mA/d i v ch4:Icoi l 200mA/di v ch3:RSTBO 1.0V/d i v ch3:RSTBO 1.0V/d i v Figure 24. RISE [EN : OFF=>ON] PWM VIN=3.2V Io=0mA .www.rohm.com (c) 2012 ROHM Co., Ltd. All rights reserved. TSZ2211115001 Figure 25. RISE [EN : OFF=>ON] PFM VIN=3.2V Io=0mA 10/24 TSZ02201-0Q1Q0AH00110-1-2 02.Aug.2012 Rev.001 Datasheet BU33DV7NUX Electrical characteristic curves (Reference data) - Continued Rise - Continued ch2:EN 2.0V/div ch2:EN 5.0V/div ch1:VOUT 1.0V/div ch1:VOUT 1.0V/div ch4:Icoil 200mA/div ch4:Icoil 20mA/div ch3:RSTBO 2.0V/div ch3:RSTBO 2.0V/div Figure 27. RISE [EN : OFF=>ON] PFM VIN=5.5V Io=0mA Figure 26. RISE [EN : OFF=>ON] PWM VIN=5.5V Io=0mA .www.rohm.com (c) 2012 ROHM Co., Ltd. All rights reserved. TSZ2211115001 11/24 TSZ02201-0Q1Q0AH00110-1-2 02.Aug.2012 Rev.001 Datasheet BU33DV7NUX Electrical characteristic curves (Reference data) - Continued Fall ch2:EN 2.0V/d i v ch2:EN 2.0V/d i v ch1:VOUT 500mV/d i v ch1:VOUT 500mV/d i v ch4:Icoi l 200mA/d i v ch4:Icoi l 200mA/d i v ch3:RSTBO 1.0V/di v ch3:RSTBO 1.0V/d i v Figure 28. FALL [EN : ON=>OFF] PWM VIN=2.4V Io=0mA Figure 29. FALL [EN : ON=>OFF] PFM VIN=2.4V Io=0mA ch2:EN 2.0V/d i v ch2:EN 2.0V/d i v ch1:VOUT 500mV/di v ch1:VOUT 500mV/di v ch4:Icoi l 200mA/d i v ch4:Icoi l 200mA/d i v ch3:RSTBO 1.0V/d i v ch3:RSTBO 1.0V/di v Figure 31. FALL [EN : ON=>OFF] PFM VIN=3.2V Io=0mA Figure 30. FALL [EN : ON=>OFF] PWM VIN=3.2V Io=0mA .www.rohm.com (c) 2012 ROHM Co., Ltd. All rights reserved. TSZ2211115001 12/24 TSZ02201-0Q1Q0AH00110-1-2 02.Aug.2012 Rev.001 Datasheet BU33DV7NUX Electrical characteristic curves (Reference data) - Continued Fall - Continued ch2:EN 5.0V/d i v ch2:EN 5.0V/d i v ch1:VOUT 1.0V/d i v ch1:VOUT 1.0V/d i v ch4:Icoi l 200mA/d i v ch4:Icoi l 200mA/d i v ch3:RSTBO 2.0V/d i v ch3:RSTBO 2.0V/d i v Figure 33. FALL [EN : ON=>OFF] PFM VIN=5.5V Io=0mA Figure 32. FALL [EN : ON=>OFF] PWM VIN=5.5V Io=0mA .www.rohm.com (c) 2012 ROHM Co., Ltd. All rights reserved. TSZ2211115001 13/24 TSZ02201-0Q1Q0AH00110-1-2 02.Aug.2012 Rev.001 Datasheet BU33DV7NUX Electrical characteristic curves (Reference data) - Continued Io change PWM ch1:VOUT 100mV/d i v ch1:VOUT 100mV/di v ch4:Icoi l 100mV/d i v ch4:Icoi l 100mV/d i v Figure 34. Io change PWM 1mA=>100mA VIN=1.8V Figure 35. Io change PWM 100mA=>1mA VIN=1.8V ch1:VOUT 100mV/d i v ch1:VOUT 100mV/d i v ch4:Icoi l 100mV/d i v ch4:Icoi l 100mV/d i v Figure 36. Io change PWM 1mA=>100mA VIN2.4V .www.rohm.com (c) 2012 ROHM Co., Ltd. All rights reserved. TSZ2211115001 Figure 37. Io change PWM 100mA=>1mA VIN=2.4V 14/24 TSZ02201-0Q1Q0AH00110-1-2 02.Aug.2012 Rev.001 Datasheet BU33DV7NUX Electrical characteristic curves (Reference data) - Continued Io change PWM - Continued ch1:VOUT 100mV/d i v ch1:VOUT 100mV/d i v ch4:Icoi l 100mV/d i v ch4:Icoi l 100mV/d i v Figure 38. Io change PWM 1mA=>100mA VIN=3.2V .www.rohm.com (c) 2012 ROHM Co., Ltd. All rights reserved. TSZ2211115001 Figure 39. Io change PWM 100mA=>1mA VIN=3.2V 15/24 TSZ02201-0Q1Q0AH00110-1-2 02.Aug.2012 Rev.001 Datasheet BU33DV7NUX Electrical characteristic curves (Reference data) - Continued Io change PFM ch1:VOUT 200mV/di v ch1:VOUT 200mV/d i v ch4:Icoi l 100mV/d i v ch4:Icoi l 100mV/di v Figure 41. Io change PFM 100mA=>1mA VIN=1.8V Figure 40. Io change PFM 1mA=>100mA VIN=1.8V ch1:VOUT 100mV/d i v ch1:VOUT 100mV/d i v ch4:Icoi l 100mV/d i v ch4:Icoi l 100mV/d i v Figure 43. Io change PFM 100mA=>1mA VIN=2.4V Figure 42. Io change PFM 1mA=>100mA VIN2.4V .www.rohm.com (c) 2012 ROHM Co., Ltd. All rights reserved. TSZ2211115001 16/24 TSZ02201-0Q1Q0AH00110-1-2 02.Aug.2012 Rev.001 Datasheet BU33DV7NUX Electrical characteristic curves (Reference data) - Continued Io change PFM - Continued ch1:VOUT 100mV/d i v ch1:VOUT 100mV/d i v ch4:Icoi l 100mV/d i v ch4:Icoi l 100mV/d i v Figure 44. Io change PFM 1mA=>100mA VIN=3.2V .www.rohm.com (c) 2012 ROHM Co., Ltd. All rights reserved. TSZ2211115001 Figure 45. Io change PFM 100mA=>1mA VIN=3.2V 17/24 TSZ02201-0Q1Q0AH00110-1-2 02.Aug.2012 Rev.001 Datasheet BU33DV7NUX Notes - Load Current 300mA (max) Timing of possible Load 300mA (max) is dueling RSTBO "H". ch2:EN 2.0V/d i v ch1:VOUT 500mV/d i v 300mA (max) ch4:Icoi l 200mA/d i v ch3:RSTBO 1.0V/d i v Figure 46. Load Current 300mA timing -EN: ON<=>OFF PFM (MODE=VIN) VIN connect to VOUT at Rswp2 MODE=VIN. Please note Drop of VOUT. EN dv/dt = -Iout/Cout VOUT Vout = 3.3x1-EXP(-t/)) VOUT Drop VOUT = VIN - (Iout x Rswp2) Thru Mode Soft Start t = time EN:500mV/Div VOUT:500mV/Div Vout Drop Thru Mode Soft Start Figure 47. EN : L=>H PFM Io=5mA VIN=3.6V .www.rohm.com (c) 2012 ROHM Co., Ltd. All rights reserved. TSZ2211115001 18/24 TSZ02201-0Q1Q0AH00110-1-2 02.Aug.2012 Rev.001 Datasheet BU33DV7NUX How to select parts of application PWM C1 VIN VOUT SW PGND L1 C3 COMP AGND MODE RSTBC RSTBO Parts No. L1 OUT C2 EN Name Inductance Value 6.8H C1 Capacitor 10F STYLE(VENDOR) VLF504015M-6R8M(TDK), LQH44PN6R8MP0L(Murata) X7R,X5R Ceramic C2 C3 Capacitor Capacitor 22F 470pF X7R,X5R Ceramic X7R,X5R Ceramic PFM R1 C1 VIN VOUT SW PGND C4 L1 C3 COMP AGND MODE RSTBC EN RSTBO Parts No. L1 C1 C2 C3 C4 R1 Name Inductance Value 6.8uH Capacitor Capacitor Capacitor Capacitor Resister 10F 22F 470pF 4.7F 10 .www.rohm.com (c) 2012 ROHM Co., Ltd. All rights reserved. TSZ2211115001 OUT C2 STYLE(VENDOR) VLF504015M-6R8M(TDK), LQH44PN6R8MP0L(Murata) X7R,X5R Ceramic X7R,X5R Ceramic X7R,X5R Ceramic - 19/24 TSZ02201-0Q1Q0AH00110-1-2 02.Aug.2012 Rev.001 Datasheet BU33DV7NUX Notes of board layout BU33DV7NUX is switching DCDC converter, so characteristics of noise and etc changing by board layout. Please note the following respect besides a general board layout matter when you make PCB. About heat loss In the heat design, please operate it in the following condition. (Please consider the margin etc. because the following temperature is a guarantee temperature.) 1. Surrounding temperature Ta must be 85 or less. 2. Loss of IC must be permissible loss Pd or less. The allowable dissipation (Pd) characteristics are described below. 2.1 2.0 1.8 1.6 1.4 1.2 1.0 0.8 0.4 0.2 0 0 25 50 75 100 125 TEMPARATURE() 4layer(74.2x74.2mmboard (1,4layer heat radiation copper foil6.28mm 2 (2,3layer heat radiation copper foil5500mm 2 ) .www.rohm.com (c) 2012 ROHM Co., Ltd. All rights reserved. TSZ2211115001 1layer(74.2x74.2mmboard (Surface heat radiation copper foil6.28mm 2 20/24 TSZ02201-0Q1Q0AH00110-1-2 02.Aug.2012 Rev.001 Datasheet BU33DV7NUX Caution on use 1Absolute Maximum Ratings An excess in the absolute maximum rating, such as supply voltage, temperature range of operating conditions, etc., can break down devices, thus making impossible to identify breaking mode such as a short circuit or an open circuit. If any special mode exceeding the absolute maximum ratings is assumed, consideration should be given to take physical safety measures including the use of fuses, etc. 2The power supply and the GND lines Design PCB pattern to provide low impedance for the wiring between the power supply and the GND lines. Please take care about interference by common impedance of the wiring pattern when there are two or more power supply and GND line. For the GND line, please note the separation of the large current route and the small signal route including the external circuit.Furthermore, for all power supply terminals to ICs; mount a capacitor between the power supply and the GND terminal. At the same time, in order to use an electrolytic capacitor, thoroughly check to be sure the characteristics of the capacitor to be used present no problem including the occurrence of capacity dropout at a low temperature, thus determining the constant. 3GND voltage Make setting of the potential of the GND terminal so that it will be maintained at the minimum in any operating state. 4Short circuit between terminals and erroneous mounting In order to mount ICs on a set PCB, pay thorough attention to the direction and offset of the ICs. Erroneous mounting can break down the ICs. Furthermore, if a short circuit occurs due to foreign matters entering between terminals or between the terminal and the power supply or the GND terminal, the ICs can break down. 5Operation in strong electromagnetic field Be noted that using ICs in the strong electromagnetic field can malfunction them. 6Input terminals In terms of the construction of IC, parasitic elements are inevitably formed in relation to potential. The operation of the parasitic element can cause interference with circuit operation, thus resulting in a malfunction and then breakdown of the input terminal. Therefore, pay thorough attention not to handle the input terminals, such as to apply to the input terminals a voltage lower than the GND respectively, so that any parasitic element will operate. Furthermore, do not apply a voltage to the input terminals when no power supply voltage is applied to the IC. In addition, even if the power supply voltage is applied, apply to the input terminals a voltage lower than the power supply voltage or within the guaranteed value of electrical characteristics. 7External capacitor In order to use a ceramic capacitor as the external capacitor, determine the constant with consideration given to a degradation in the nominal capacitance due to DC bias and changes in the capacitance due to temperature, etc. 8Thermal design Perform thermal design in which there are adequate margins by taking into account the permissible dissipation (Pd) in actual states of use. Moreover, please use it within the range where output Tr doesn't exceed the rated voltage and ASO. .www.rohm.com (c) 2012 ROHM Co., Ltd. All rights reserved. TSZ2211115001 21/24 TSZ02201-0Q1Q0AH00110-1-2 02.Aug.2012 Rev.001 Datasheet BU33DV7NUX Caution on use- Continued 9Rush current In CMOS IC, when the power supply is turned on rush current might flow momentarily in logical internal irregular state. Therefore, note drawing the capacity of the power supply coupling, the power supply, and width and drawing the GND pattern wiring, please. 10Test terminal and unused terminal processing Please process a test terminal and unused terminal according to explanations of the function manual and the application note, etc. to be unquestionable while real used. Moreover, please inquire of the person in charge of our company about the terminal without the explanation especially. (11)Content of material The application notes etc. are the design material to design the application, and no one of the content securing it. Please decide the application after it examines enough and it evaluates it including external parts. Status of this document The Japanese version of this document is formal specification. A customer may use this translation version only for a reference to help reading the formal version. If there are any differences in translation version of this document formal version takes priority .www.rohm.com (c) 2012 ROHM Co., Ltd. All rights reserved. TSZ2211115001 22/24 TSZ02201-0Q1Q0AH00110-1-2 02.Aug.2012 Rev.001 Datasheet BU33DV7NUX Ordering part number B U 3 Part No. 3 D V 7 N U Output Voltage X - E 2 Wrapping Forming specification E2:Reelemboss taping Package NUX: VSON010X3030 VSON010X3030 <Tape and Reel information> 3.00.1 3.00.1 2.00.1 0.5 E2 The direction is the 1pin of product is at the upper left when you hold ( reel on the left hand and you pull out the tape on the right hand ) 5 0.40.1 1.20.1 1 4000pcs (0.12) 0.08 S C0.25 Embossed carrier tape Quantity Direction of feed S +0.03 0.02 -0.02 0.6MAX 1PIN MARK Tape 10 0.5 6 +0.05 0.25 -0.04 1pin (Unit : mm) Reel Direction of feed Order quantity needs to be multiple of the minimum quantity. Lineup Output Voltage(Typ.) Package Orderable Part Number 3.4V VSON010X3030 BU34DV7NUX-E2 3.3V VSON010X3030 BU33DV7NUX-E2 Marking Diagram(s) (TOP VIEW) VSON010V3030 (TOP VIEW) VSON010V3030 (TOP VIEW) Part Number Marking U33 LOT Number DV7 Product Name BU34DV7NUX BU33DV7NUX Part Number Marking U34 DV7 U33 DV7 1PIN MARK .www.rohm.com (c) 2012 ROHM Co., Ltd. All rights reserved. TSZ2211115001 23/24 TSZ02201-0Q1Q0AH00110-1-2 02.Aug.2012 Rev.001 Datasheet BU33DV7NUX Revision History Date Revision 02.Aug.2012 001 Changes New Release .www.rohm.com (c) 2012 ROHM Co., Ltd. All rights reserved. TSZ2211115001 24/24 TSZ02201-0Q1Q0AH00110-1-2 02.Aug.2012 Rev.001 Datasheet Notice Precaution on using ROHM Products 1. Our Products are designed and manufactured for application in ordinary electronic equipments (such as AV equipment, OA equipment, telecommunication equipment, home electronic appliances, amusement equipment, etc.). If you (Note 1) , transport intend to use our Products in devices requiring extremely high reliability (such as medical equipment equipment, traffic equipment, aircraft/spacecraft, nuclear power controllers, fuel controllers, car equipment including car accessories, safety devices, etc.) and whose malfunction or failure may cause loss of human life, bodily injury or serious damage to property ("Specific Applications"), please consult with the ROHM sales representative in advance. Unless otherwise agreed in writing by ROHM in advance, ROHM shall not be in any way responsible or liable for any damages, expenses or losses incurred by you or third parties arising from the use of any ROHM's Products for Specific Applications. (Note1) Medical Equipment Classification of the Specific Applications JAPAN USA EU CHINA CLASS CLASSb CLASS CLASS CLASS CLASS 2. ROHM designs and manufactures its Products subject to strict quality control system. However, semiconductor products can fail or malfunction at a certain rate. Please be sure to implement, at your own responsibilities, adequate safety measures including but not limited to fail-safe design against the physical injury, damage to any property, which a failure or malfunction of our Products may cause. The following are examples of safety measures: [a] Installation of protection circuits or other protective devices to improve system safety [b] Installation of redundant circuits to reduce the impact of single or multiple circuit failure 3. Our Products are designed and manufactured for use under standard conditions and not under any special or extraordinary environments or conditions, as exemplified below. Accordingly, ROHM shall not be in any way responsible or liable for any damages, expenses or losses arising from the use of any ROHM's Products under any special or extraordinary environments or conditions. If you intend to use our Products under any special or extraordinary environments or conditions (as exemplified below), your independent verification and confirmation of product performance, reliability, etc, prior to use, must be necessary: [a] Use of our Products in any types of liquid, including water, oils, chemicals, and organic solvents [b] Use of our Products outdoors or in places where the Products are exposed to direct sunlight or dust [c] Use of our Products in places where the Products are exposed to sea wind or corrosive gases, including Cl2, H2S, NH3, SO2, and NO2 [d] Use of our Products in places where the Products are exposed to static electricity or electromagnetic waves [e] Use of our Products in proximity to heat-producing components, plastic cords, or other flammable items [f] Sealing or coating our Products with resin or other coating materials [g] Use of our Products without cleaning residue of flux (even if you use no-clean type fluxes, cleaning residue of flux is recommended); or Washing our Products by using water or water-soluble cleaning agents for cleaning residue after soldering [h] Use of the Products in places subject to dew condensation 4. The Products are not subject to radiation-proof design. 5. Please verify and confirm characteristics of the final or mounted products in using the Products. 6. In particular, if a transient load (a large amount of load applied in a short period of time, such as pulse. is applied, confirmation of performance characteristics after on-board mounting is strongly recommended. Avoid applying power exceeding normal rated power; exceeding the power rating under steady-state loading condition may negatively affect product performance and reliability. 7. De-rate Power Dissipation (Pd) depending on Ambient temperature (Ta). When used in sealed area, confirm the actual ambient temperature. 8. Confirm that operation temperature is within the specified range described in the product specification. 9. ROHM shall not be in any way responsible or liable for failure induced under deviant condition from what is defined in this document. Precaution for Mounting / Circuit board design 1. When a highly active halogenous (chlorine, bromine, etc.) flux is used, the residue of flux may negatively affect product performance and reliability. 2. In principle, the reflow soldering method must be used; if flow soldering method is preferred, please consult with the ROHM representative in advance. For details, please refer to ROHM Mounting specification Notice - GE (c) 2014 ROHM Co., Ltd. All rights reserved. Rev.002 Datasheet Precautions Regarding Application Examples and External Circuits 1. If change is made to the constant of an external circuit, please allow a sufficient margin considering variations of the characteristics of the Products and external components, including transient characteristics, as well as static characteristics. 2. You agree that application notes, reference designs, and associated data and information contained in this document are presented only as guidance for Products use. Therefore, in case you use such information, you are solely responsible for it and you must exercise your own independent verification and judgment in the use of such information contained in this document. ROHM shall not be in any way responsible or liable for any damages, expenses or losses incurred by you or third parties arising from the use of such information. Precaution for Electrostatic This Product is electrostatic sensitive product, which may be damaged due to electrostatic discharge. Please take proper caution in your manufacturing process and storage so that voltage exceeding the Products maximum rating will not be applied to Products. Please take special care under dry condition (e.g. Grounding of human body / equipment / solder iron, isolation from charged objects, setting of Ionizer, friction prevention and temperature / humidity control). Precaution for Storage / Transportation 1. Product performance and soldered connections may deteriorate if the Products are stored in the places where: [a] the Products are exposed to sea winds or corrosive gases, including Cl2, H2S, NH3, SO2, and NO2 [b] the temperature or humidity exceeds those recommended by ROHM [c] the Products are exposed to direct sunshine or condensation [d] the Products are exposed to high Electrostatic 2. Even under ROHM recommended storage condition, solderability of products out of recommended storage time period may be degraded. It is strongly recommended to confirm solderability before using Products of which storage time is exceeding the recommended storage time period. 3. Store / transport cartons in the correct direction, which is indicated on a carton with a symbol. Otherwise bent leads may occur due to excessive stress applied when dropping of a carton. 4. Use Products within the specified time after opening a humidity barrier bag. Baking is required before using Products of which storage time is exceeding the recommended storage time period. Precaution for Product Label QR code printed on ROHM Products label is for ROHM's internal use only. Precaution for Disposition When disposing Products please dispose them properly using an authorized industry waste company. Precaution for Foreign Exchange and Foreign Trade act Since our Products might fall under controlled goods prescribed by the applicable foreign exchange and foreign trade act, please consult with ROHM representative in case of export. Precaution Regarding Intellectual Property Rights 1. All information and data including but not limited to application example contained in this document is for reference only. ROHM does not warrant that foregoing information or data will not infringe any intellectual property rights or any other rights of any third party regarding such information or data. ROHM shall not be in any way responsible or liable for infringement of any intellectual property rights or other damages arising from use of such information or data.: 2. No license, expressly or implied, is granted hereby under any intellectual property rights or other rights of ROHM or any third parties with respect to the information contained in this document. Other Precaution 1. This document may not be reprinted or reproduced, in whole or in part, without prior written consent of ROHM. 2. The Products may not be disassembled, converted, modified, reproduced or otherwise changed without prior written consent of ROHM. 3. In no event shall you use in any way whatsoever the Products and the related technical information contained in the Products or this document for any military purposes, including but not limited to, the development of mass-destruction weapons. 4. The proper names of companies or products described in this document are trademarks or registered trademarks of ROHM, its affiliated companies or third parties. Notice - GE (c) 2014 ROHM Co., Ltd. All rights reserved. Rev.002 Datasheet General Precaution 1. Before you use our Pro ducts, you are requested to care fully read this document and fully understand its contents. ROHM shall n ot be in an y way responsible or liabl e for fa ilure, malfunction or acci dent arising from the use of a ny ROHM's Products against warning, caution or note contained in this document. 2. All information contained in this docume nt is current as of the issuing date and subj ect to change without any prior notice. Before purchasing or using ROHM's Products, please confirm the la test information with a ROHM sale s representative. 3. The information contained in this doc ument is provi ded on an "as is" basis and ROHM does not warrant that all information contained in this document is accurate an d/or error-free. ROHM shall not be in an y way responsible or liable for an y damages, expenses or losses incurred b y you or third parties resulting from inaccur acy or errors of or concerning such information. Notice - WE (c) 2014 ROHM Co., Ltd. All rights reserved. Rev.001 Datasheet bu33dv7nux - Web Page Buy Distribution Inventory Part Number Package Unit Quantity Minimum Package Quantity Packing Type Constitution Materials List RoHS bu33dv7nux VSON010X3030 4000 4000 Taping inquiry Yes