XC9220/XC9221 Series ETR0511-011 16V Input Voltage, Step-Down DC/DC Controller ICs. GENERAL DESCRIPTION The XC9220/XC9221 series is a group of multi-purpose step-down DC/DC controller ICs. The ICs enable a high efficiency, stable power supply with an output current up to 3A to be configured using only a transistor, a coil, a diode, and two capacitors connected externally. Low ESR capacitors such as a ceramic capacitor can be used as an output capacitor. The XC9220/XC9221 series has a 0.9V (1.5%) reference voltage, and using externally connected resistors, the output voltage can be set freely. With an internal switching frequency of 300kHz and 500kHz 1.0MHz, small external components can also be used. The XC9220 series is PWM control, and the XC9221 series is PWM/PFM mode, which automatically switches from PWM to PFM during light loads and high efficiencies can be achieved over a wide range of load conditions. As for the soft-start time, the XC9220/XC9221A and C series is internally set to 4msec and the XC9220/XC9221B and D series can be externally set-up. With the built-in UVLO (Under Voltage Lock Out) function, the external P-channel driver transistor is forced OFF when input voltage becomes 2.3V or lower. APPLICATIONS FEATURES Set top boxes Operating Voltage Range : 2.8V ~ 16.0V Output Voltage Externally Set Range : 1.2V or more (VFB=0.9V+1.5%) Output Current : Less than 3.0A Oscillation Frequency : 300kHz, 500kHz, and 1.0MHz Control Methods : PWM control (XC9220) PWM/PFM automatic switching (XC9221) Soft-Start Function : 4ms, internally set Digital TVs DVD/HDD recorders Portable information terminals Notebook computers (XC9220/XC9221A, 500kHz) Externally set (XC9220/XC9221B) : Integral protection (1.0 ms) Protection Circuits (XC9220/XC9221 Aand B series) Short-circuit protection Low ESR Capacitor Compatible : Ceramic capacitor Operating Ambient Temperature : - 40~ + 85 Packages : SOT-25 USP-6C Environmentally Friendly : EU RoHS Compliant, Pb Free TYPICAL APPLICATION CIRCUIT TYPICAL PERFORMANCE CHARACTERISTICS V IN Efficiency vs. Output Current XC9221A095MR (VOUT=3.3V, FOSC=500kHz) C IN L 4 EXT FB 3 SBD CFB RS ENS E ( f or ceramic CL ) R FB1 CL R FB2 90 VOUT VIN=5.0V 80 Efficiency EFFI (%) GND CIN=47F (OS-Con), CL=47F (OS-Con), L=10H (CDRH8D43, SUMIDA) PchMOSFET: CPH3308 (SANYO), CDD=1.0F (ceramic), RIN=10 100 Pch MOSFET 5 CE 2 V IN 1 CE 70 VIN=16.0V 60 VIN=12.0V 50 40 30 20 * RSENSE : Tantalum and electrolytic capacitors can be used, in w hich case, RSENSE becomes unnecessary. 10 0 0.1 1 10 100 1000 10000 Output Current IOUT (mA) 1/22 XC9220/XC9221 Series PIN CONFIGURATION V IN EXT/ 5 4 1 2 * The dissipation pad for the USP-6C package (preliminary) should be solder-plated in recommended mount pattern and metal masking so as to enhance mounting strength and heat release. If the pad needs to be connected to other pins, it should be connected to the VSS (No.5) pin. 3 CE/CSS V SS FB SOT-25 (TOP VIEW) USP-6C (BOTTOM VIEW) PIN ASSIGNMENT PIN NUMBER SOT-25 USP-6C 1 2 3 4 5 6 5 4 3 2 1 PIN NAME FUNCTION CE/CSS VSS FB EXT/ NC VIN Chip Enable / Soft-Start Ground Output Voltage Sense External Transistor Drive No Connection Power Supply PRODUCT CLASSIFICATION Ordering Information XC9220-(*1): PWM control *1 XC9221-( ): PWM/PFM automatic switching control DESIGNATOR -(*1) (*1) ITEM SYMBOL DESCRIPTION A Soft-start internally set with integral protection function Type of DC/DC Controller B Soft-start externally set with integral protection function ICs C Soft-start internally set without integral protection function D Soft-start externally set without integral protection function 09 FB Voltage (Fixed) 3 300kHz Output Voltage Oscillation Frequency Packages (Order Unit) 5 500kHz A 1.0MHz MR SOT-25 (3,000/Reel) MR-G SOT-25 (3,000/Reel) ER USP-6C (3,000/Reel) ER-G USP-6C (3,000/Reel) The "-G" suffix denotes Halogen and Antimony free as well as being fully RoHS compliant. 2/22 XC9220/XC9221 Series BLOCK DIAGRAMS XC9220/21A and C series XC9220/21B and D series VIN Under Voltage Lock Out U.V.L.O Short Circuit Protection FB MaxDutyLimit Protection EXT / Buffer - Err Amp CE VREF 0.9V PWM Comparator + PWM/PFM Control LOGIC OSC Enable + OE Soft Start (internal) RS Latch Ram Wave OSC PWM Wave (XC9221series) R S CE/CSS Q Each circuit Chip Enable LOGIC Frequency : 1 MHz , 500 kHz , 300 kHz Each circuit VSS * Diodes inside the circuits are ESD protection diodes and parasitic diodes. FUNCTIONS CHIP ENABLE IC OPERATION H Operation ON L Operation OFF PRODUCT TYPE A B C D Soft-start externally set No Yes No Yes Integral protection function Yes Yes No No ABSOLUTE MAXIMUM RATINGS Ta = 25OC PARAMETER SYMBOL RATINGS UNITS VIN Pin Voltage VIN -0.3 +18.0 V FB Pin Voltage VFB -0.3 +18.0 V CE/CSS Pin Voltage CE -0.3 +18.0 V EXT/ Pin Voltage VEXT - 0.3 ~ VIN + 0.3 V EXT/ Pin Current IEXT + 100 mA Power Dissipation SOT-25 USP-6C Pd 250 120 mW Operating Ambient Temperature Topr - 40 ~ + 85 O Storage Temperature Tstg - 55 ~ +125 O C C 3/22 XC9220/XC9221 Series ELECTRICAL CHARACTERISTICS XC9220/XC9221 A and C series Ta = 25OC PARAMETER SYMBOL FB Voltage Input Voltage Range UVLO Voltage (Minimum Operating Voltage) Supply Current 2 Stand-by Current VFB VIN 0.8865 2.8 VUVLO 1.9 2.3 - ** 0.1 Oscillation Frequency fOSC Maximum Duty Ratio PFM Duty Ratio EXT/ High On Resistance EXT/ Low On Resistance Integral Protection Time (*2) Short-Circuit Protection Soft-Start Time Efficiency (*1) FB Voltage Temperature Characteristics MAXDTY PFMDTY REXTBH REXTBL CE "High" Level Voltage CE "Low" Level Voltage CE "High" Level Current CE "Low" Level Current FB "High" Level Current FB "Low" Level Current IDD2 ISTB tPRO VSHORT tSS EFFI UVFB UToprVFB VCEH VCEL ICEH ICEL IFBH IFBL CONDITIONS VIN=5.0V, FB=1.0V Connected to external components No load (XC9221 series only) 100 15 6 6 Unless otherwise stated, VIN=5.0V *1: EFFI = { (output voltage) x (output current)} / { (input voltage) x (input current) } x 100 *2: No Integral protection function is available with the XC9220/9221 C series. ** Refer to the CHARACTERISTICS CHART BY OSCILLATION FREQUENCY. MAX. UNIT. CIRCUIT V V 2 - 2.7 V 3 1.0 A A 1 1 kHz 3 % % 2 3 4 4 ms 2 V ms % ppm O / C 2 2 3 V V A A A A 2 3 1 1 4 4 0.9000 0.9135 16.0 25 10 12 35 16 20 ** - VIN=CE=16V VIN=16V, CE=0V VIN=FB=16V VIN=16V, FB=0V TYP. ** (XC9220/9221 A series) NOTE: 4/22 MIN. 0.7 - ** 92 - +100 - 1.2 - 0.1 - 0.1 - 0.1 - 0.1 - 0.3 0.1 0.1 0.1 0.1 - 2 XC9220/XC9221 Series ELECTRICAL CHARACTERISTICS (Continued) XC9220/XC9221 B and D series Ta = 25OC PARAMETER SYMBOL FB Voltage Input Voltage Range UVLO Voltage (Minimum Operating Voltage) Supply Current 2 Stand-by Current VFB VIN 0.8865 2.8 VUVLO 1.9 2.3 - ** 0.1 Oscillation Frequency fOSC Maximum Duty Ratio PFM Duty Ratio EXT/ High On Resistance EXT/ Low On Resistance Integral Protection Time (*4) Short-Circuit Protection Soft-Start Time Internal Soft-Start Time (*1) Efficiency (*2) FB Voltage Temperature Characteristics MAXDTY PFMDTY REXTBH REXTBL CE "High" Level Voltage (*3) CE "Low" Level Voltage CE "High" Level Current CE "Low" Level Current FB "High" Level Current FB "Low" Level Current CONDITIONS IDD2 ISTB tPRO VSHORT tSS tSS_IN EFFI UVFB UToprVFB MIN. VIN=5.0V, FB=1.0V Connected to external components TYP. MAX. UNIT. CIRCUIT V V 2 - 2.7 V 3 1.0 A A 1 1 kHz 3 % % 2 3 4 4 ms 2 V ms ms % ppm /OC 2 5 2 3 0.9000 0.9135 16.0 ** No load (XC9221 series only) 100 15 6 6 (XC9220/9221 B series) 25 10 12 35 16 20 ** 0.7 20.0 - 10.0 ** 92 - +100 - VCEH 2.6 - - V 2 VCEL ICEH ICEL IFBH IFBL - 0.1 - 0.1 - 0.1 - 0.1 - 0.3 0.1 0.1 0.1 0.1 V A A A A 2 1 1 4 4 Connected to RSS and CSS CE=VIN VIN=CE=16V VIN=16V, CE=0V VIN=FB=16V VIN=16V, FB=0V 5.0 - 2 Unless otherwise stated, VIN=5.0V External components: CSS=0.1F, RSS=200k NOTE: *1: Internal soft-start time: In case where the U.V.L.O. function operates temporarily due to the power cutoff etc. when an external CSS is charged (VCE>2.6V), the IC restarts operation by the internal soft-start time. Minimum value of soft-start time set externally is equal to the internal soft-start time. *2: EFFI={ (output voltage) x (output current) } / { (input voltage) x (input current) } x 100 *3: The integral latch and short-circuit protection do not function when the CE/CSS pin voltage become lower than 2.6V while the soft-start time. *4: No Integral protection function is available with the XC9220/XC9221 D series. ** Refer to the CHARACTERISTICS CHART BY OSCILLATION FREQUENCY. CHARACTERISTICS CHART BY OSCILLATION FREQUECY PARAMETER SYMBOL Supply Current 2 Oscillation Frequency Integral Protection Time Soft-Start Time IDD2 fosc tPRO tSS MIN. 255 0.5 2 300kHz TYP. 25 300 1.0 4 MAX. 50 345 2.0 8 MIN. 425 0.5 2 500kHz TYP. 25 500 1.0 4 MAX. 50 575 2.0 8 MIN. 850 0.25 1 1.0MHz TYP. 40 1000 0.50 2 MAX. 80 1150 1.00 4 5/22 XC9220/XC9221 Series TYPICAL APPLICATION CIRCUITS External Components Pch MOSFET: 2SJ646 (SANYO) SBD: DE5PC3 (SHINDENGEN) L: CDRH8D28-4R7 (4.7H, SUMIDA / fosc=1.0MHz) CDRH8D43-100 (10H, SUMIDA / fosc=500kHz) CDRH127-220 (22H, SUMIDA / fosc=300kHz) CIN: 47F (OS-CON, SANYO) CL: 47F (OS-CON, SANYO) OPERATIONAL EXPLANATION The XC9220/XC9221 series consists of a reference voltage source, ramp wave circuit, error amplifier, PWM comparator, phase compensation circuit, protection circuits, UVLO circuit and others. The series ICs compare, using the error amplifier, the voltage of the internal voltage reference source with the feedback voltage from the VOUT pin through split resistors. Phase compensation is performed on the resulting error amplifier output, to input a signal to the PWM comparator to determine the turn-on time during PWM operation. The PWM comparator compares, in terms of voltage level, the signal from the error amplifier with the ramp wave from the ramp wave circuit, and delivers the resulting output to the buffer driver circuit to cause the EXT pin to output a switching duty cycle. This process is continuously performed to ensure stable output voltage. <Reference Voltage Source> The reference voltage source provides the reference voltage to ensure stable output voltage of the DC/DC converter. <Oscillator> The oscillator determines switching frequency. The frequency is fixed internally and can be selected from 300kHz, 500kHz and 1.0MHz. Clock pulses generated in this circuit are used to produce ramp waveforms needed for PWM operation, and to synchronize all the internal circuits. <Error Amplifier> The error amplifier is designed to monitor output voltage. The amplifier compares the reference voltage with the feedback voltage (FB pin voltage) divided by the internal split resistors. When a voltage lower than the reference voltage is fed back, the output voltage of the error amplifier increases. The gain and frequency characteristics of the error amplifier output are fixed internally to deliver an optimized signal to the PWM comparator. <Control Methods> The XC9220 series is PWM control, and the XC9221 series is PWM/PFM automatic switching mode. In the XC9220 series, it is controlled at a constant frequency from light load to heavy load. When a noise etc. is concerned, it is easy to set up a filter etc. since the frequency is fixed. On the other hand, the efficiency at the time of light load may fall. In the XC9221 series, the high efficiency can be drawn from PFM control at the time of light load. In PWM/PFM automatic switching mode, a control method is automatically changed from PWM control to PFM control at the time of light load. If coil current becomes discontinuous at the time of light load, ON time duty intends to reduce less than 25%. Therefore, the PFM circuit operates to output the pulse, which ON time duty fixed to 25% from the EXT/pin. The ON time duty is fixed when PFM operation. The pulse is outputted with the cycle suitable for the conditions at that time. In order that the number of times of switching per unit time may decrease, the efficiency, which it is at the light load time is improved. However, output cycle of the pulse cannot be fixed. For this, the circuit should be designed with this point in mind when using a noise filter etc. The conditions shifting to the PFM operation is depend on values of input voltage, load current, coil and so on. 6/22 XC9220/XC9221 Series OPERATIONAL EXPLANATION (Continued) <UVLO (Under Voltage Lock Out) > When the input voltage becomes 2.3V (TYP.) or lower, the external P-channel driver transistor is forced OFF. Once the UVLO operates, the XC9220/XC9221A and C series (soft-start internally set type) resets the internal circuit. For this, by releasing the UVLO function, the IC performs the soft-start function to initiate output startup operation. When the input voltage falls because of a power cutoff etc. and the IC stops operation due to the UVLO function, the IC resumes its operation by internal soft-start circuit of the XC9220/XC9221B and D series. If the soft-start time is needed to set externally, the CE/CSS pin voltage should be reset to 0V. (Please see the soft-start circuit example.) UVLO Operation U.V .L.O. operation VIN U.V.L.O. ( Internal Signal) VOUT (XC9220/21A and C series) VOUT (XC9220/21B and D series) U.V .L.O. release delay U.V .L.O. release delay Sof t-start time: Tss1 Sof t-start time (Externally set-up) :Tss2 Sof t-start time:Tss1 <Soft-Start Time> The XC9220/XC9221B and D series can adjust the soft-start time externally via the CE pin. The soft-start function operates until the CE pin voltage becomes 2.6V. Please refer to the following equation for calculating the soft-start time. Minimum soft-start time is equal to the time set internally. TSS= - CSS x RSS x In { (VCE - 2.2) / VCE } Internal sotf-starttime:Tss1 (XC9220/21A series) Externally set soft-start time: Tss2 (XC9220/21A series) XC9220/21A series Rss CE/CSS PIN VCE Css XC9220/21B series Minimum soft-start time when externally set: Tss2_min = Tss1 > Circuit Example1 : N-ch Open Drain > Circuit Examle2 : CMOS logic (low current dissipation) > Cicuit Examle3 : CMOS logic (low current dissipation, quick off) VCE VCE VCE Rss ON/OFF Signal ON/OFF Signal ON/OFF Signal Rss CE/CSS PIN Css Rss CE/CSS PIN Css CE/CSS PIN Css 7/22 XC9220/XC9221 Series OPERATIONAL EXPLANATION (Continued) <Protection Circuits> 1. Integral Protection Circuit (Latch Type) In the circuit of the XC9220/XC9221 A and B series, the more load current becomes larger, the duty of the EXT/ pin gradually expands, and the duty reaches maximum (EXT/L). When the MAXDUTY state continues a certain amount of time (TPRO), the EXT/ pin holds high level (latching) and keeps the P-ch output driver transistor in OFF state. For resuming the operation from the latching state, please turn off the IC via the CE pin or apply the input voltage again (operates UVLO function and release). The latching state does not mean a complete shutdown, but a state in which pulse output is suspended; therefore, the internal circuitry remains in operation. However, the integral protection circuit uses the MAXDUTY as a trigger for its operation, it suspends the pulse output no matter what dropout voltage decreases. For the specification including small dropout voltage, the XC9220/XC9221 C or D series, which do not have the integral protection function, are recommended. z Integral protection circuit EXT/ Waveform Latch Ton < Tpro Ton > Tpro Ton : ON Time ( EXT/ : L) Tpro : Integral Protection Circuit Delay Time (Internally set) Protection circuit operates and EXT/ Output shut dow n 2. Short-Circuit Protection Circuit (Latching Type) When the FB pin is shorted to the Ground or the output voltage drops rapidly because of over load state etc., the P-ch driver transistor is kept OFF as in the case with the integral protection circuit. (The protection circuit operates when the FB voltage becomes 0.7V or lower.) For releasing the latching state, the circuit is needed to restart via the VIN or the CE pin. z Short-circuit protection circuit FB Voltage 0.9V 0.7V Latch 0.9V VREF Less than 100usec = Not latching Sof t-start time Tss x 90% * Protection circuit does not operate. 8/22 * A bout 100 to 200usec delay time is set to avoid latching w hen instantaneous transient response drop 100 usec XC9220/XC9221 Series OPERATIONAL EXPLANATION (Continued) Output Voltage Setting Output voltage can be set by adding split resistors. Output voltage is determined by the following equation, based on the values of RFB1 and RFB2. The sum of RFB1 and RFB2 should normally be 1M or less. VOUT = 0.9 x (RFB1 + RFB2) / RFB2 The value of CFB, speed-up capacitor for phase compensation, should be adjusted by the following equation. Fzfb should usually be 5kHz. Adjustments are required from 1kHz to 20kHz depending on the application, value of inductance (L), and value of load capacity (CL). CFB = 1 / (2 x x RFB1 x fzfb) [Sample calculation: Setting 3.3V VOUT] RFB1 = 200k, RFB2=75k, VOUT = 0.9 x (200k + 75k) / 75k = 3.300V CFB = 1 / (2 x x 200k x 5k) =150pF [Typical examples] VOUT (V) RFB1 (k) RFB2 (k) CFB (pF) VOUT (V) RFB1 (k) RFB2 (k) CFB (pF) 1.2 1.5 1.8 100 180 220 300 270 220 330 180 150 3.3 5.0 12.0 200 150 160 75 33 13 150 220 180 Recommended MOSFET and SBD (Examples) IOUT P-ch MOSFET (*1) Schottky Barrier Diode (SBD) (*2) UP TO 500mA UP TO 1A CPH3308 (SANYO) XB01SB04A2BR (TOREX) UP TO 2A UP TO 3A 2SJ616 (SANYO) 2SJ646 (SANYO) D1FH3 (SHINDENGEN) CMS02 (TOSHIBA) *1: Recommended to use P-ch MOSFET with Ciss less than 1500pF. *2: SBD should be used with high-toned reverse characteristics. DE5PC3 (SHINDENGEN) Ceramic Capacitor With the XC9220/9221 series, a ceramic capacitor can be used as an output capacitor (CL). RSENSE resistor is required for using the ceramic capacitor. The value of RSENSE resistor is determined depending on the setting output voltage as the chart below. OUTPUT VOLTAGE VOUT2.5V VOUT>2.5V RSENSE (m) 100 50 External Components P-ch MOSFET: 2SJ646 (SANYO) SBD: DE5PC3 (SHINDENGEN) L: CDRH8D28-4R7 (4.7H, SUMIDA / fosc=1.0MHz) CDRH8D43-100 (10H, SUMIDA / fosc=500kHz) CDRH127-220 (22H, SUMIDA / fosc=300kHz) CIN: 22F (ceramic) CL: 22F (ceramic / fosc=1.0MHz, 500kHz) 47F (ceramic / fosc=300kHz) RSENSE: 100m (VOUT2.5V) 50m (VOUT2.5V) 9/22 XC9220/XC9221 Series OPERATIONAL EXPLANATION (Continued) Setting of Coil Value Recommended inductance value of coil by oscillation frequency is shown in the chart below. fosc (kHz) 300 500 1000 L (H) 22.0 10.0 4.7 However, the more current change in each pulse becomes larger, the more output ripple voltage becomes higher when dropout voltage is high. This may lead to instability. In this case, increasing the coil inductance value will make Ipk_AC small, and it makes output stable. Ipk_AC = (VIN - VOUT) x VOUT / (VIN x L x fosc) L: Coil inductance value fosc: Oscillation frequency Please do not exceed the coil rating. Coil peak current is determined by the following equation. Ipk = IOUT + Ipk_AC / 2 10/22 XC9220/XC9221 Series NOTES ON USE 1. The XC9220/XC9221 series are designed for use with an output ceramic capacitor. If, however, the potential difference between input and output is too large, a ceramic capacitor may fail to absorb the resulting high switching energy and oscillation could occur on the output. If the input-output potential difference is large, connect the output capacitor with large performance to compensate for insufficient capacitance. 2. Spike noise and ripple voltage arise in a switching regulator as with a DC/DC converter. These are greatly influenced by external component selection, such as the coil inductance, capacitance values, and board layout of the external components. Once the design has been completed, verification with actual components should be done. 3. When the difference between input voltage and output voltage is large in PWM control, and the load current is light, very narrow pulses will be outputted, and there is the possibility that some cycles my be skipped completely. 4. When the difference between input voltage and output voltage is small in PWM control, and the load current is heavy, very wide pulses will be outputted and there is the possibility that some cycles my be skipped completely. 5. When using the CE pin by pulling up to the VIN pin, please be noted to the rising time of the VIN pin voltage. If the rising time of the VIN pin voltage is much slower than the soft-start time of the XC9220/XC9221 series, the short-protection circuit starts to operate so that the output may not rise. If you are using the A or the C series, please use a voltage detector or something similar in order to check that the input voltage rises fully. Then, start the series via the CE pin. If you don't want to use an additional detector in this way, we recommend that you use the B or D series, adjusting the soft-start period externally so that the voltage at the VIN pin rises fully before the soft-start period is completed. 6. Use of the IC at voltages below the recommended minimum operating voltage may lead to instability. 7. This IC and external components should be used within the stated absolute maximum ratings in order to prevent damage to the device. 8. For temporary, transitional voltage drop or voltage rising phenomenon, the IC is liable to malfunction should the ratings be exceeded. 9. Torex places an importance on improving our products and their reliability. We request that users incorporate fail-safe designs and post-aging protection treatment when using Torex products in their systems. 11/22 XC9220/XC9221 Series NOTES ON USE (Continued) Instructions on Pattern Layout 1. Wire external components as close to the IC as possible and use thick, short connecting traces to reduce the circuit impedance. 2. Please pay special attention to the strengthening of VIN and VSS wiring. Switching noise which occurs from the GND may cause the instability of the IC. For that matter, it is recommended to connect RIN (about 10) and CDD (about 1F) to the VIN pin if VIN voltage is high and noise is high. [Board layout when XC9220/XC9221 series is mounted with external components] Ceramic Capacitor Schottky Barrier Diode Inductor Resistor Low value resistor [PC board for the XC9220/XC9221 series] 12/22 XC9220/XC9221 Series TEST CIRCUITS Circuit 1: Supply Current, Stand-by Current, CE Current Circuit 2: FB Voltage, Integral Protection, Short-Circuit, Soft-Start, MAXDUTY, CE Voltage Probe VIN VIN A CIN:1uF A EXT / CE/CSS EXT / CE/CSS FB V FB V VSS VSS CIN:1uF Circuit 3: Oscillation Frequency, PFMDUTY, UVLO, Efficiency Circuit 4: EXT On Resistance, FB Current Circuit 5: Soft-Start (Externally set: B and D series) Probe VIN CIN:1uF V EXT / CE/CSS FB VIN A EXT / Rss A CE/CSS V VSS Css V FB VSS V CIN:1uF 13/22 XC9220/XC9221 Series TYPICAL PERFORMANCE CHARACTERISTICS (1) Efficiency vs. Output Current XC9220/21x095xx 100 90 80 80 70 60 50 40 30 10 VIN=5.0V 70 VIN=12V 60 50 40 30 PWM(XC9220) PFM(XC9221) 20 PWM(XC9220) PFM(XC9221) 20 Tr:2SJ646, SBD:DE5PC3, CDRH127-10uH CIN=10uF(ceramic), CL=44uF(ceramic), RSENSE=50mohm VOUT=3.3V 100 90 Efficiency: EFFI (%) Efficiency: EFFI (%) XC9220/21x095xx Tr:2SJ646, SBD:DE5PC3, CDRH127-10uH, CIN=10uF(ceramic), CL=44uF(ceramic), RSENSE=50mohm VIN=12V => VOUT=5V 10 0 0 0.1 1 10 100 1000 0.1 10000 1 10 100 1000 10000 Output Current: IOUT (mA) Output Current: IOUT (mA) (2) Output Voltage vs. Output Current XC9220/21x095xx 5.2 5.0 4.8 4.6 PWM(XC9220) PFM(XC9221) Tr:2SJ646, SBD:DE5PC3, CDRH127-10uH CIN=10uF(ceramic), CL=44uF(ceramic), RSENSE=50mohm VOUT=3.3V 3.7 Output Voltage: VOUT (V) 5.4 Output Voltage: VOUT (V) XC9220/21x095xx Tr:2SJ646, SBD:DE5PC3, CDRH127-10uH CIN=10uF(ceramic), CL=44uF(ceramic), RSENSE=50mohm VIN=12V => VOUT=5V 4.4 VIN=5.0V 12V 3.5 3.3 3.1 2.9 PWM(XC9220) PFM(XC9221) 2.7 0.1 1 10 100 1000 10000 0.1 Output Current: IOUT (mA) 1 10 100 1000 10000 Output Current: IOUT (mA) (3) Output Ripple Voltage vs. Output Current XC9220/21x095xx XC9220/21x095xx Tr:2SJ646, SBD:DE5PC3, CDRH127-10uH CIN=10uF(ceramic), CL=44uF(ceramic), RSENSE=50mohm VIN=12V => VOUT=5V 100 Tr:2SJ646, SBD:DE5PC3, CDRH127-10uH CIN=10uF(ceramic), CL=44uF(ceramic), RSENSE=50mohm VOUT=3.3V 100 80 Ripple Voltage: Vr (mV) Ripple Voltage: Vr (mV) 90 PWM(XC9220) PFM(XC9221) 60 40 20 PWM(XC9220) PFM(XC9221) 80 70 60 50 40 VIN=5.0V 30 VIN=12V 20 10 0 0 0.1 1 10 100 1000 Output Current: IOUT (mA) 14/22 10000 0.1 1 10 100 1000 Output Current: IOUT (mA) 10000 XC9220/XC9221 Series TYPICAL PERFORMANCE CHARACTERISTICS (Continued) (5) FB Voltage vs. Input Voltage (4) FB Voltage Temperature Characteristics XC9220/21 Series XC9220/21 Series VIN=5V 1.00 1.00 0.95 FB Voltage: VFB (V) FB Voltage: VFB (V) 0.95 0.90 0.85 0.80 0.75 -50 0.90 Ta=85 0.85 25 -40 0.80 0.75 -25 0 25 50 75 2 100 4 6 (6) Input Voltage Temperature Characteristics VIN=5V, Fosc=300k,500kHz Supply Current: IDD (uA) Supply Current: IDD (uA) 16 Fosc=300k,500kHz 50 30 20 10 40 30 20 Ta=85 25 10 -40 0 -25 0 25 50 75 100 0 2 4 Ambient Temperature: Ta ( ) 6 8 10 12 14 16 Input Voltage: VIN (V) (8) Oscillation Frequency Temperature Characteristics (9) U.V.L.O. Temperature Characteristics XC9220/21x095xx XC9220/21Series VIN=5V 550 2.8 525 UVLO Voltage: VUVLO (V) Frequency: FOSC (kHz) 14 XC9220/21 Series 40 500 475 450 425 400 -50 12 (7) Supply Current vs. Input Voltage XC9220/21 Series 0 -50 10 Input Voltage: VIN (V) Ambient Temperature: Ta ( ) 50 8 -25 0 25 50 75 Ambient Temperature: Ta ( ) 100 2.6 UVLO(Release) 2.4 2.2 UVLO(Detect) 2.0 1.8 -50 -25 0 25 50 75 100 Ambient Temperature: Ta ( ) 15/22 XC9220/XC9221 Series TYPICAL PERFORMANCE CHARACTERISTICS (Continued) (11) EXT L ON Resistance Characteristics (10) EXT H ON Resistance Characteristics XC9220/21 Series XC9220/21Series 30 EXT/L Resistance:REXTBL () EXT/H Resistance:REXTBH () 30 25 20 Ta=85 25 15 -40 10 5 0 Ta=85 25 25 -40 20 15 10 5 0 0 2 4 6 8 10 12 14 16 0 2 4 Input Voltage: VIN (V) 6 8 10 12 14 16 Input Voltage: VIN (V) (11) Soft-Start Time Temperature Characteristics XC9220/21 Series VIN=5V, Fosc=300k,500kHz 7.0 6.0 5.0 4.0 3.0 2.0 -50 -25 0 25 50 75 VIN=5V, Fosc=1.0MHz 4.0 Soft-Start Time : TSS (msec) 8.0 Soft-Start Time: TSS (msec) XC9220/21Series 3.5 3.0 2.5 2.0 1.5 1.0 -50 100 Ambient Temperature: Ta ( ) -25 0 25 50 75 100 Ambient Temperature: Ta ( ) (12) Integral Protection Time Temperature Characteristics XC9220/21A, B Series VIN=5V, Fosc=300k,500kHz 2.0 1.6 1.2 0.8 0.4 0.0 -50 -25 0 25 50 75 Ambient Temperature: Ta ( ) 16/22 100 VIN=5V, Fosc=1MHz 1.0 Integral Protection Time: Tpro (msec) Integral Protection Time: Tpro (msec) XC9220/21A, B Series 0.8 0.6 0.4 0.2 0.0 -50 -25 0 25 50 75 Ambient Temperature: Ta ( ) 100 XC9220/XC9221 Series TYPICAL PERFORMANCE CHARACTERISTICS (Continued) (13) Short-Circuit Protection Temperature Characteristics (14) Short-Circuit Protection Voltage vs. Input Voltage XC9220/21 Series XC9220/21 Series VIN=5V 0.7 0.6 0.5 0.4 0.3 -50 0.8 Short-Protection Voltage: Vshort (V) Short-Protection Voltage: Vshort (V) 0.8 0.7 0.6 0.5 0.4 0.3 -25 0 25 50 75 100 0 2 Ambient Temperature: Ta ( ) 4 6 14 16 14 16 XC9220/21 Series VIN=5V 1.2 1.0 1.2 CE Voltage: VCEH, VCEL (V) CE Voltage: VCEH, VCEL (V) 12 (16) CE Threshold vs. Input Voltage XC9220/21 Series CE_H 0.6 CE_L 0.4 0.2 0.0 -50 10 Input Voltage: VIN (V) (15) CE Threshold Temperature Characteristics 0.8 8 1.0 CE_H 0.8 0.6 CE_L 0.4 0.2 0.0 -25 0 25 50 75 Ambient Temperature: Ta ( ) 100 0 2 4 6 8 10 12 Input Voltage: VIN (V) 17/22 XC9220/XC9221 Series TYPICAL PERFORMANCE CHARACTERISTICS (Continued) (17) Load Transient Response Characteristics XC9220x095xx (500kHz, PWM Control) <External Components> Tr: 2SJ616 (SANYO), SBD: D1FH3 (SHINDENGEN), L=10H CDRH8D43, SUMIDA) CIN=47F (OS-Con), CL=47F (OS-Con) IOUT=0.1mA1000mA VIN=5.0V, VOUT=3.3V, VOUT=100mV/div., Time=50s/div. VIN=5.0V, VOUT=3.3V, VOUT=100mV/div., Time=10ms/div. IOUT=0.1mA1000mA VIN=10.0V, VOUT=3.3V, VOUT=100mV/div., Time=50s /div. VIN=10.0V, VOUT=3.3V, VOUT=100mV/div., Time=10ms/div. IOUT=300mA3000mA VIN=10.0V, VOUT=3.3V, VOUT=100mV/div., Time=50s /div. 18/22 VIN=10.0V, VOUT=3.3V, VOUT=100mV/div., Time=10ms/div. XC9220/XC9221 Series PACKAGING INFORMATION SOT-25 USP-6C Unit : mm Unit : mm 19/22 XC9220/XC9221 Series PACKAGING INFORMATION (Continued) USP-6C Reference Pattern Layout 20/22 USP-6C Reference Metal Mask Design XC9220/XC9221 Series MARKING RULE SOT-25 represents product series MARK PRODUCT SERIES M N SOT-25 (TOP VIEW) represents product types MARK XC9220xxxxxx XC9221xxxxxx FUNCTION PRODUCT SERIES A Soft-start internally set with integral protection function XC922xAxxxxx B Soft-start externally set with integral protection function XC922xBxxxxx C Soft-start internally set without integral protection function XC922xCxxxxx D Soft-start externally set without integral protection function XC922xDxxxxx represents oscillation frequency MARK OSCILLATION FREQUENCY 3 5 A 300kHz 500kHz 1.0MHz PRODUCT SERIES XC922xxxx3xx XC922xxxx5xx XC922xxxxAxx represents production lot number 0 to 9, A to Z and inverted 0 to 9, A to Z repeated. (G, I, J, O, Q, W excluded.) USP-6C represents product series MARK PRODUCT SERIES 1 D USP-6C (TOP VIEW) represent product types MARK XC9220xxxxxx XC9221xxxxxx FUNCTIONS PRODUCT SERIES A Soft-start internally set with integral protection function XC922xAxxxxx B Soft-start externally set with integral protection function XC922xBxxxxx C Soft-start internally set without integral protection function XC922xCxxxxx D Soft-start externally set without integral protection function XC922xDxxxxx represents FB voltage MARK 0 9 FB VOLTAGE PRODUCT SERIES 0.9V fixed XC922xx09xxx represents oscillation frequency MARK OSCILLATION FREQUENCY 3 5 A 300kHz 500kHz 1.0MHz PRODUCT SERIES XC922xxxx3xx XC922xxxx5xx XC922xxxxAxx represents production lot number 0 to 9, A to Z repeated. (G, I, J, O, Q, W excluded.) * No character inversion used. 21/22 XC9220/XC9221 Series 1. The products and product specifications contained herein are subject to change without notice to improve performance characteristics. Consult us, or our representatives before use, to confirm that the information in this datasheet is up to date. 2. We assume no responsibility for any infringement of patents, patent rights, or other rights arising from the use of any information and circuitry in this datasheet. 3. Please ensure suitable shipping controls (including fail-safe designs and aging protection) are in force for equipment employing products listed in this datasheet. 4. The products in this datasheet are not developed, designed, or approved for use with such equipment whose failure of malfunction can be reasonably expected to directly endanger the life of, or cause significant injury to, the user. (e.g. Atomic energy; aerospace; transport; combustion and associated safety equipment thereof.) 5. Please use the products listed in this datasheet within the specified ranges. Should you wish to use the products under conditions exceeding the specifications, please consult us or our representatives. 6. We assume no responsibility for damage or loss due to abnormal use. 7. All rights reserved. No part of this datasheet may be copied or reproduced without the prior permission of TOREX SEMICONDUCTOR LTD. 22/22