RT9193-15GB - Richtek - Product.Network

RT9193

DS9193-15 January 2012 www.richtek.com

300mA, Ultra-Low Noise, Ultra-Fast CMOS LDO Regulator

Marking Information

For marking information, contact our sales representative

directly or through a Richtek distributor located in your

area.

Ordering Information

General Description

The RT9193 is designed for portable RF and wireless

applications with demanding performance and space

requirements. The RT9193 perf ormance is optimized for

battery-powered systems to deliver ultra low noise and

low quiescent current. A noise bypa ss pin is available for

further reduction of output noise. Regulator ground current

increases only slightly in dropout, further prolonging the

battery life. The RT9193 also works with low-ESR cera mic

ca pacitors, reducing the a mount of board space necessary

for power applications, critical in hand-held wireless

devices. The RT9193 consumes less than 0.01μA in

shutdown mode and has fast turn-on time less than 50μs.

The other features include ultra low dropout voltage, high

output accuracy , current limiting protection, and high ripple

rejection ratio. Available in the SC-70-5, SOT-23-5,

TSOT -23-5, W DFN-6L 2x2 and MSOP-8 packages.

Features

zUltra Low Noise for RF Application

zUltra Fast Re spon se in Line/Loa d Tra n sient

zQuick Start-Up (T ypically 50us)

z<0.01μμ

μμ

μA Standby Current When Shutdown

zLow Dropout : 220mV @ 300mA

zWide Operating Voltage Ranges : 2.5V to 5.5V

zTTL-Logic-Controlled Shutdown Input

zLow Temperature Coefficient

zCurrent Limiting Protection

zThermal Shutdown Protection

zOnly 1μμ

μμ

μF Output Capa citor Required for Stability

zHigh Power Supply Rejection Ratio

zCustom Voltage Available

zRoHS Compliant and 100% Lead (Pb)-Free

Applications

zCDMA/GSM Cellular Handsets

zBattery-Powered Equipment

zLa ptop, Palmtops, Notebook Computers

zHand-Held Instruments

zPCMCIA Cards

zPortable Inf ormation Applia nces

Note :

Richtek products are :

` RoHS compliant and compatible with the current require-

ments of IPC/JEDEC J-STD-020.

` Suitable for use in SnPb or Pb-free soldering processes.

Typical Application Circuit

VIN

GND

VOUT

RT9193

COUT

1µF/X7R

CIN

1µF/X7R

VIN VOUT

EN BP CBP

22nF

Chip Enab le

RT9193- Package Type

U5 : SC-70-5

B : SOT-23-5

J5 : TSOT-23-5

QW : WDFN-6L 2x 2 (W-T ype)

F : MSOP-8

Output Voltage

15 : 1.5V

16 : 1.6V

49 : 4.9V

50 : 5.0V

1H : 1.85V

2H : 2.85V

4G : 4.75V

(1.5V to 5V with 0.1V step is available)

Lead Plating System

P : Pb Free

G : Green (Halogen Free and Pb Free)

RT9193

2DS9193-15 January 2012www.richtek.com

Function Block Diagram

Functional Pin Description

Pi n Name Pin Function

EN C hip E nabl e (Active Hig h). N ote that thi s p in is hi gh im pedance. There sh ould be a pul l low 100kΩ

resistor co nnect ed to GND when the cont rol signa l is fl oat ing .

BP R efe ren c e Noi se Bypa ss.

GND Ground.

VOUT Output Voltage.

VIN Po wer Inpu t Volt a g e .

Pin Configurations (TOP VIEW)

SC-70-5/SOT-23-5/TSOT-23-5 WDFN-6L 2x2 MSOP-8

NC NC

GND

VOUT

VIN

GND BP

VOUTVIN 5

VIN GND EN

VOUT BP

Current-Limit

and

Thermal

Protection

MOSFET

Driver

VOUT

Shutdown

and

Logic Con trol

VIN

Error

Amplifier

VREF

GND

Quick

Start

RT9193

DS9193-15 January 2012 www.richtek.com

Electrical Characteristics

(VIN = VOUT + 1V, CIN = COUT = 1μF, CBP = 22nF, TA = 25 °C, unless otherwise specified)

Parameter Symbol Test Conditions Min Typ Max Unit

Output Voltage Accuracy ΔVOUT I

OUT = 1m A −2 -- 2 %

Cur rent L imit ILIM R

LOAD = 1Ω 360 400 -- mA

Quiescent Current IQ V

EN ≥ 1.2V, IOUT = 0mA -- 90 130 μA

IOUT = 2 00mA, VOUT > 2.8V 170 200

Dropout Voltage (Note 5) VDROP IOUT = 3 00mA, VOUT > 2.8V -- 220 30 0 mV

Line Regulation ΔVLINE VIN = (VOUT + 1V) to 5.5V,

IOUT = 1m A -- -- 0.3 %

Load Regulation ΔVLOAD 1mA < IOUT < 300 m A -- -- 0.6 %

Standby Current ISTBY V

EN = GND, S hutdown -- 0.01 1 μA

EN Input Bias Current IIBSD V

EN = GND or VIN -- 0 100 nA

Logic-Low VIL V

IN = 3V to 5.5V, Shutdown -- -- 0.4

EN Threshold Voltage Logic-High VIH V

IN = 3V to 5.5V, Start-Up 1.2 -- -- V

Absolute Maximum Ratings (Note 1)

zSupply Input Voltage ---------------------------------------------------------------------------------------------------- 6V

zPower Dissipation, PD @ TA = 25°C

SC-70-5 -------------------------------------------------------------------------------------------------------------------- 300mW

TSOT-23-5/SOT-23-5 ---------------------------------------------------------------------------------------------------- 400mW

WDFN-6L 2x2------------------------------------------------------------------------------------------------------------- 606mW

MSOP-8 ------------------------------------------------------------------------------------------------------------------- 625mW

zPa ckage Thermal Resistance (Note 2)

SOT-70-5, θJA ------------------------------------------------------------------------------------------------------------- 333°C/W

TSOT-23-5/SOT -23-5, θJA ---------------------------------------------------------------------------------------------- 250°C/W

TSOT-23-5/SOT-23-5, θJC ---------------------------------------------------------------------------------------------- 25°C/W

W DF N-6L 2x2, θJA ------------------------------------------------------------------------------------------------------- 165°C/W

WDFN-6L 2x2, θJC ------------------------------------------------------------------------------------------------------- 20°C/W

MSOP-8 θJA --------------------------------------------------------------------------------------------------------------- 160°C/W

MSOP-8 θJC -------------------------------------------------------------------------------------------------------------- 55°C/W

zJunction T emperature --------------------------------------------------------------------------------------------------- 150°C

zLead T emperature (Soldering, 10 sec.) ----------------------------------------------------------------------------- 260°C

zStorage T emperature Range ------------------------------------------------------------------------------------------- −65°C to 150°C

zESD Susceptibility (Note 3)

HBM (Human Body Mode) --------------------------------------------------------------------------------------------- 2kV

MM (Ma chine Mode) ---------------------------------------------------------------------------------------------------- 200V

Recommended Operating Conditions (Note 4)

zSupply Input Voltage ---------------------------------------------------------------------------------------------------- 2.5V to 5.5V

zEN Input V oltage --------------------------------------------------------------------------------------------------------- 0V to 5.5V

zJunction T emperature Range ------------------------------------------------------------------------------------------ −40°C to 125°C

zAmbient T emperature Range ------------------------------------------------------------------------------------------ −40°C to 85°C

RT9193

4DS9193-15 January 2012www.richtek.com

Note 1. Stresses beyond those listed “Absolute Maximum Ratings” may cause permanent damage to the device. These are

stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in

the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions may

affect device reliability.

Note 2. θJA is measured at TA = 25°C on a low effective thermal conductivity single-layer test board per JEDEC 51-3.

Note 3. Devices are ESD sensitive. Handling precaution is recommended.

Note 4. The device is not guaranteed to function outside its operating conditions.

Note 5. The dropout voltage is defined as VIN − VOUT, which is measured when VOUT is VOUT(NORMAL) − 100mV.

Parameter Symbol Test Conditions Min Typ Max Unit

Output Noise Voltage eNO 10Hz to 100kHz, IOUT = 200mA

COUT = 1μF -- 100 -- μVRMS

f = 100Hz -- −70 -- P ower Supply

Rejection Rate f = 10kHz PSRR COUT = 1μF, IOUT = 10mA -- −50 -- dB

Th erm al Shutdown Temper ature TSD -- 165 -- °C

Th erm al Shutdown Temper ature ΔTSD -- 30 -- °C

RT9193

DS9193-15 January 2012 www.richtek.com

Quiescent Current vs. Temperature

-50 -25 0 25 50 75 100 125

Tem pera tu re ( °C )

Quiescent Current (µA

)

Dropout Voltage vs. Load Current

100

150

200

250

300

0 0.05 0.1 0.15 0.2 0.25 0.3

Load Current (A)

Dropout V oltage (mV)

RT9193-33xB

CIN = COUT = 1μFTJ = 125°C

TJ = 25°C

TJ = -40°C

Typical Operating Characteristics

PSRR

-80

-60

-40

-20

0.01 0.1 1 10 100 1000

Frequ ency (kHz )

PSRR ( dB)

ILoad = 10mA

ILoad = 100mA

10 100 1K 10K 100K 1M

(Hz)

VIN = 4V to 5V

CIN = COUT = 1μF, X7R

Time (500μs/Div)

VIN = 5V

CIN = COUT = 1μF

EN Pin Shutdown Response

EN Pin Voltage

(V)

Output Voltage

(V)

RT9193-28xU5

No Load

Output Voltage vs. Temperature

1.2

1.3

1.4

1.5

1.6

1.7

1.8

-50-25 0 25 50 75100125

Tem pera ture (°C)

O utput V oltage (V)

RT9193-15xU5

VIN = 3.3V

CIN = COUT = 1μF X7R

RT9193-15xU5

VIN = 3.3V

CIN = COUT = 1μF X7R

EN Pin Shutdown Threshold vs. Te mperature

0.50

0.75

1.00

1.25

1.50

1.75

-50 -25 0 25 50 75 100 125

Temperature (°C)

EN Pin Shut do w n Threshol d (V) 1

RT9193-15xU5

VIN = 3.3V

CIN = COUT = 1μF X7R

RT9193

6DS9193-15 January 2012www.richtek.com

Time (10ms/Div)

VIN = 4.5V

CIN = COUT = 1μF, X7R

Noise

Noise (μV)

200

100

-100

-200

RT9193-15xU5

ILOAD = 50mA

f = 10Hz to 100kHz

Time (10ms/Div)

VIN = 4.5V

CIN = COUT = 1μF, X7R

Noise

Noise (μV)

200

100

-100

-200

RT9193-30xB

ILOAD = 50mA

f = 10Hz to 100kHz

Time (100μs/Div)

Line Transient Response

Output Voltage

Deviation (mV) Input Voltage

Deviation (V)

-10

VIN = 4V to 5V

COUT = 1μFRT9193-25xB

ILOAD = 100mA

Time (50μs/Div)

VIN = 4V to 5V

COUT = 1μF

Line Transient Response

Output Voltage

Deviation (mV) Input Voltage

Deviation (V)

RT9193-25xB

ILOAD = 1mA

-10

Time (500μs/Div)

VIN = 5V, VOUT = 2.8V

CIN = COUT = 1μF

Load Transient Response

Output Voltage

Deviation (mV) Load Current

(mA)

ILOAD = 1mA to 60mA

100

-20

Time (500μs/Div)

Load Transient Response

Output Voltage

Deviation (mV) Load Current

(mA)

ILOAD = 1mA to 250mA

400

200

-50

VIN = 5V, VOUT = 2.8V

CIN = COUT = 1μF

RT9193

DS9193-15 January 2012 www.richtek.com

Time (10μs/Div)

VIN = 5V

CIN = COUT = 1μF

Start Up

EN Pin Voltage

(V)

Output Voltage

(V)

RT9193-28xU5

No Load

RT9193

8DS9193-15 January 2012www.richtek.com

Applications Information

Like any low dropout regulator, the external capacitors

used with the RT9193 must be carefully selected for

regulator stability and performance. Using a capacitor

whose value is >1μF on the RT9193 input a nd the amount

of capacitance can be incre ased without limit. The in put

ca pacitor must be located a dista nce of not more than 0.5

inch from the input pin of the IC and returned to a clea n

analog ground. Any good quality cera mic or tantalum ca n

be used for this ca pa citor . The ca pa citor with larger value

and lower ESR (equivalent series resistance) provides

better PSRR and line-transient response. The output

capacitor must meet both requirements for minimum

a mount of capa cita nce a nd ESR in all LDOs a pplication.

The RT9193 is designed specifically to work with low ESR

ceramic output capa citor in space-saving and performance

consideration. Using a cera mic ca pa citor whose value is

at least 1μF with ESR is >1mΩ on the RT9193 output

ensures stability . The RT9193 still works well with output

ca pacitor of other types due to the wide stable ESR ra nge.

Figure 1 shows the curves of allowable ESR ra nge as a

function of load current for various output ca pacitor values.

Output ca pa citor of larger capa citance ca n reduce noise

and improve load tra nsient response, stability , a nd PSRR.

The output ca pacitor should be located not more than 0.5

inch from the VOUT pin of the RT9193 and returned to a

clean a nalog ground.

Figure 1

Bypa ss Ca pa citor and Low Noise

Connecting a 22nF between the BP pin and GND pin

significantly reduces noise on the regulator output, it is

critical that the ca pa citor connection between the BP pin

and GND pin be direct and PCB tra ces should be as short

as possible. There is a relation ship between the bypass

capacitor value and the LDO regulator turn on time. DC

leakage on this pin can affect the LDO regulator output

noise and voltage regulation performa nce.

Enable Function

The RT9193 features an LDO regulator enable/disable

function. To a ssure the LDO regulator will switch on, the

EN turn on control level must be greater than 1.2 volts.

The LDO regulator will go into the shutdown mode when

the voltage on the EN pin falls below 0.4 volts. For to

protecting the system, the RT9193 have a quick-discharge

function. If the enable function is not needed in a specific

a pplication, it may be tied to VIN to keep the LDO regulator

in a continuously on state.

Thermal Considerations

Thermal protection limits power dissipation in RT9193.

When the operation junction temperature exceeds 165°C,

the OTP circuit starts the thermal shutdown function turn

the pass element off. The pass element turn on again

after the junction temperature cools by 30°C.

For continue operation, do not exceed absolute maximum

operation junction temperature 125°C. The power

dissipation definition in device is :

PD = (VIN − VOUT) x IOUT + VIN x IQ

The maximum power dissipation depends on the thermal

resistance of IC package, PCB layout, the rate of

surroundings airflow and temperature difference between

junction to a mbient. The maximum power dissipation can

be calculated by following formula :

PD(MAX) = ( TJ(MAX) − TA ) /θJA

Where TJ(MAX) is the maximum operation junction

temperature 125°C, TA is the ambient temperature and

the θJA is the junction to a mbient thermal re sistance.

Region of Sta ble COUT ESR vs . Load Current

0.001

0.01

0.1

100

0 50 100 150 200 250 300

Load Current (mA)

COUT ESR ( )

Instable

Stable

RT9193-15xU5

CIN = COUT = 1μF, X7R

RT9193

DS9193-15 January 2012 www.richtek.com

For recommended operating conditions specification of

RT9193, where TJ(MAX) is the maximum junction

temperature of the die (125°C) and TA is the maximum

ambient temperature. The junction to ambient thermal

resistance (θJA is layout dependent) for TSOT-23-5/

SOT-23-5 package is 250°C/W, SC-70-5 package is

333°C/W, W DF N-6L 2x2 package is 165°C/W and MSOP-

8 pa ckage is 160°C/W on sta ndard JEDEC 51-3 thermal

test board. The maximum power dissi pation at TA = 25°C

can be calculated by following f ormula :

PD(MAX) = (125°C − 25°C) / 333 = 300mW for

SC-70-5

PD(MAX) = (125°C − 25°C) / 250 = 400mW for

TSOT-23-5/SOT-23-5

PD(MAX) = (125°C − 25°C) / 165 = 606mW for

W DFN-6L 2x2

PD(MAX) = (125°C −25°C) / 160 = 625mW for

MSOP-8

The maximum power dissipation depends on operating

ambient temperature for fixed TJ(MAX) and thermal

resistance θJA. For RT9193 packages, the Figure 2 of

derating curves allows the designer to see the effect of

rising ambient temperature on the maximum power

allowed.

Figure 2. Derating Curve for Packages

100

200

300

400

500

600

700

0255075100125

Ambient Temperatur e (°C)

Powe r Di ssipat ion ( m W)

TSOT-23-5/

SOT-23-5

SC 70-5

WDFN-6L 2x2

MSOP-8

RT9193

10 DS9193-15 January 2012www.richtek.com

AA1

SC-70-5 Surface Mount Package

Dimensions In Millimet ers Dimensio n s In Inches

Symbol Min Max Min Max

A 0.800 1.100 0.031 0.044

A1 0.000 0.100 0.000 0.004

B 1.150 1.350 0.045 0.054

b 0.150 0.400 0.006 0.016

C 1.800 2.450 0.071 0.096

D 1.800 2.250 0.071 0.089

e 0.650 0.026

H 0.080 0.260 0.003 0.010

L 0.210 0.460 0.008 0.018

Outline Dimension

RT9193

DS9193-15 January 2012 www.richtek.com

TSOT-23-5 Surfa ce Mount Package

Dimensions In Millim et ers Dimen sions In Inches

Symbol Min Max Min Max

A 0.700 1.000 0.028 0.039

A1 0.000 0.100 0.000 0.004

B 1.397 1.803 0.055 0.071

b 0.300 0.559 0.012 0.022

C 2.591 3.000 0.102 0.118

D 2.692 3.099 0.106 0.122

e 0.838 1.041 0.033 0.041

H 0.080 0.254 0.003 0.010

L 0.300 0.610 0.012 0.024

AA1

RT9193

12 DS9193-15 January 2012www.richtek.com

AA1

SOT-23-5 Surface Mount Pa c kage

Dimensions In Mi ll imeters Dimens ions In Inch e s

Symbol Min Max Min Max

A 0.889 1.295 0.035 0.051

A1 0.000 0.152 0.000 0.006

B 1.397 1.803 0.055 0.071

b 0.356 0.559 0.014 0.022

C 2.591 2.997 0.102 0.118

D 2.692 3.099 0.106 0.122

e 0.838 1.041 0.033 0.041

H 0.080 0.254 0.003 0.010

L 0.300 0.610 0.012 0.024

RT9193

DS9193-15 January 2012 www.richtek.com

Dim e nsion s In Mill imete rs Dimensio ns In I nche s

Symbol Min Max Min Max

A 0.700 0.800 0.028 0.031

A1 0.000 0.050 0.000 0.002

A3 0.175 0.250

0.007 0.010

b 0.200 0.350 0.008 0.014

D 1.950 2.050 0.077 0.081

D2 1.000 1.450 0.039 0.057

E 1.950 2.050 0.077 0.081

E2 0.500 0.850 0.020 0.033

e 0.650 0.026

L 0.300 0.400

0.012 0.016

W-Type 6L DFN 2x2 Package

SEE DETAIL A

Note : The configuration of the Pin #1 identifier is optional,

but must be located within the zone indicated.

DETAIL A

Pin #1 ID and T ie Bar Mark Options

RT9193

14 DS9193-15 January 2012www.richtek.com

Richtek Technology Corporation

5F, No. 20, Taiyuen Street, Chupei City

Hsinchu, Taiwan, R.O.C.

Tel: (8863)5526789

Richtek products are sold by description only. Richtek reserves the right to change the circuitry and/or specifications without notice at any time. Customers should

obtain the latest relevant information and data sheets before placing orders and should verify that such information is current and complete. Richtek cannot

assume responsibility for use of any circuitry other than circuitry entirely embodied in a Richtek product. Information furnished by Richtek is believed to be

accurate and reliable. However, no responsibility is assumed by Richtek or its subsidiaries for its use; nor for any infringements of patents or other rights of third

parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Richtek or its subsidiaries.

EE1

bA1 A2

Dimensions In Millimet ers Dimensio n s In Inches

Symbol Min Max Min Max

A 0.810 1.100 0.032 0.043

A1 0.000 0.150 0.000 0.006

A2 0.750 0.950 0.030 0.037

b 0.220 0.380 0.009 0.015

D 2.900 3.100 0.114 0.122

e 0.650 0.026

E 4.800 5.000 0.189 0.197

E1 2.900 3.100 0.114 0.122

L 0.400 0.800

0.016 0.031

8-Lead MSOP Plastic Package