Richtek RT9193-15GB, RT9193-15PB, RT9193-15PU5, RT9193-16GB, RT9193-16PB Schematic [ru]

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RT9193

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

General Description

The RT9193 is designed for portable RF and wireless applications with demanding performance and space requirements. The RT9193 performa nce is optimized f or battery-powered systems to deliver ultra low noise and low quiescent current. A noise bypa ss pin is availa ble for further reduction of output noise. Regulator ground current increa s e s only slightly in dropout, further prolonging the battery life. The RT9193 also works with low-ESR cera mic capa citors, reducing the a mount of board space necessary for power applications, critical in hand-held wireless devices. The RT9193 consumes less than 0.01

μA in

shutdown mode and ha s fa st turn-on time less than 50μs. The other features include ultra low dropout voltage, high output accura cy , current limiting protection, and high ri pple rejection ratio. Available in the SC-70-5, SOT-23-5, TSOT-23-5, W D F N-6L 2x2 a nd MSOP-8 packages.

Ordering Information

RT9193-

Package Type U5 : SC-70-5 B : SOT-23-5 J5 : TSOT-23-5 QW : WDFN-6L 2x2 (W-Type) F : MSOP-8

Lead Plating System P : Pb Free G : Green (Halogen Free and Pb Free)

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)

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.

Features

Ultra Low Noise for RF Application

z Ultra Fast Response in Line/Load Transient

z Quick Start-Up (T ypically 50

z <0.01

z Low Dropout : 220mV @ 300mA

z Wide Operating Voltage Ranges : 2.5V to 5.5V

z TTL-Logic-Controlled Shutdown Input

z Low Temperature Coefficient

z Current Limiting Protection

z Thermal Shutdown Protection

z Only 1

z High Power Supply Rejection Ratio

z Custom Voltage Available

z RoHS Compliant and 100% Lead (Pb)-Free

μμ

μA Standby Current When Shutdown

μμ

μF Output Capacitor Required for Stability

μμ

μs)

μμ

Applications

z CDMA/GSM Cellular Handsets z Battery-Powered Equipment z Laptop, Palmtops, Notebook Computers z Hand-Held Instruments z PCMCIA Cards z Portable Information Applia nces

Marking Information

For marking information, contact our sales representative directly or through a Richtek distributor located in your area.

Typical Application Circuit

RT9193

1µF/X7R

Chip Enable

VIN

GND EN

VOUT

OUT

1µF/X7R

22nF

(Option for low noise)

OUT

DS9193-16 January 2013 www.richtek.com

RT9193

Pin Configurations

(TOP VIEW)

VOUT BP

VIN GND EN

GND

WDFN-6L 2x2 MSOP-8

SC-70-5/SOT-23-5/TSOT-23-5

Functional Pin Description

Pin Name Pin Function

VOUTVIN

VIN

VOUT

8 2 3 4

GND

Chip Enable (Active High). Note that this pin is high impedance. There should be a pull low 100kΩ resist or c onn ected to G ND wh en the control s ignal is flo at ing.

Reference Noise Bypass. This pin can be floating. For lowest noise performance, connect a 22nF capacitor between the BP and GND pins.

GND Ground. VOUT Output Voltage. VIN Power Input Voltage.

Function Block Diagram

Quick

Start

REF

Shutdown

and

Logic Control

Error

Amplifier

VIN

MOSFET

Driver

VOUT

Current-Limit

and

Thermal

Protection

GND

DS9193-16 January 2013www.richtek.com

RT9193

Absolute Maximum Ratings (Note 1)

z Supply Input V oltage------------------------------------------------------------------------------------------------------ 6V z Power Dissipation, P

SC-70-5 ---------------------------------------------------------------------------------------------------------------------- 300mW TSOT-23-5/SOT -23-5------------------------------------------------------------------------------------------------------ 400mW WDFN-6L 2x2 -------------------------------------------------------------------------------------------------------------- 606mW MSOP-8 --------------------------------------------------------------------------------------------------------------------- 625mW

z Package 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 DFN-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

z Junction T emperature----------------------------------------------------------------------------------------------------- 150°C z Lead T e mperature (Soldering, 10 sec.)------------------------------------------------------------------------------- 26 0°C z Storage T emperature Range -------------------------------------------------------------------------------------------- −65°C to 150°C z ESD Susceptibility (Note 3)

HBM (Human Body Model)---------------------------------------------------------------------------------------------- 2kV MM (Machine Model) ----------------------------------------------------------------------------------------------------- 200V

@ T

= 25°C

Recommended Operating Conditions (Note 4)

z Supply Input V oltage------------------------------------------------------------------------------------------------------ 2.5V to 5.5V z EN Input V oltage----------------------------------------------------------------------------------------------------------- 0V to 5.5V z Junction T emperature Range-------------------------------------------------------------------------------------------- z Ambient T emperature Range--------------------------------------------------------------------------------------------

Electrical Characteristics

(VIN = V

+ 1V, CIN = C

OUT

= 1μF, CBP = 22nF, T

OUT

= 25° C, unless otherwise specified)

Parameter Symbol Test Conditions Min Typ Max Unit

Output Voltage Accuracy ΔV Current Limit I Quiescent Current IQ V

D rop out Voltage ( Note 5) V

Line Regulation ΔV

Load Regulation ΔV Standby Cu rrent I

OUT

LIM

DROP

LINE

1mA < I

LOAD

VEN = GND, Shutdo wn -- 0.0 1 1 μA

STBY

= 1mA −2 -- 2 %

OUT

= 1Ω 360 400 -- mA

LOAD

≥ 1.2V, I

= 200mA , V

OUT

= 300mA , V

OUT

= (V

= 1mA

OUT

+ 1V) to 5.5V,

OUT

< 300mA -- -- 0.6 %

OUT

= 0mA -- 90 130 μA

OUT

> 2.8V 170 200

OUT

> 2.8V -- 220 300

OUT

-- -- 0.3 %

−40°C to 125°C

−40°C to 85°C

DS9193-16 January 2013 www.richtek.com

RT9193

Parameter Symbol Test Conditions Min Typ Max Unit

EN Input Bias Current I EN Threshold

Voltage

Logic-Low Logic-High

Output Noise Voltage eNO

f = 100Hz -- −70 -- Power Supply

Rej ect ion Rat e

f = 10kHz

VEN = GND or VIN -- 0 100 nA

IBSD

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

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

PSRR C

10Hz to 100kHz, I

= 1μF

OUT

= 1μF, I

OUT

= 200mA

OUT

= 10mA

-- 100 -- μV

-- −50 --

RMS

Thermal Shutdown Temperature TSD -- 165 -- °C Thermal Shutdown Temperature

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. θ 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 V

is measured at T

= 25°C on a low effective thermal conductivity single-layer test board per JEDEC 51-3.

ΔTSD -- 30 -- °C

− V

, which is measured when V

OUT

is V

OUT(NORMAL)

− 100mV.

DS9193-16 January 2013www.richtek.com

)

Typical Operating Characteristics

RT9193

Output Voltage vs. Temperature

1.8

RT9193-15xU5 V

= 3.3V

1.7

1.6

1.5

1.4

CIN = C

= 1μF X7R

OUT

Output Voltage (V)

1.3

1.2

-50 -25 0 25 50 75 100 125

Temperature (°C)

Dropout Voltage v s. Load Current

300

RT9193-33xB CIN = C

250

200

150

100

Dropout V oltage (mV)

OUT

= 1μF

= 25°C

= 125°C

= -40°C

Quiescent Current vs. Temperature

RT9193-15xU5 V

= 3.3V

CIN = C

= 1μF X7R

OUT

Quiescent C urrent (µ A

-50 -25 0 25 50 75 100 125

Temperature (°C)

PSRR

= 4V to 5V

PSRR (dB)

CIN = C

-20

-40

-60

= 1μF , X7R

OUT

Load

= 100mA

Load

= 10mA

0 0.05 0.1 0.15 0.2 0.25 0.3

Load Current (A)

EN Pin Shutdown Threshold vs. Tem pe rature

1.75

RT9193-15xU5 V

= 3.3V

CIN = C

1.50

1.25

1.00

0.75

EN Pin Shutdown Threshold (V) 1

0.50

-50 -25 0 25 50 75 100 125

= 1μF X7R

OUT

-80

10 100 1K 10K 100K 1M

0.01 0.1 1 10 100 1000

Frequency (kHz)

(Hz)

EN Pin Shutdown Response

= 5V

10 5

(V)

EN Pin Voltage

(V)

Output Voltage

2 1 0

CIN = C

OUT

= 1μF

Time (500μs/Div)

RT9193-28xU5 No Load

Temperature (°C)

DS9193-16 January 2013 www.richtek.com

RT9193

V CIN = C

100 50

(mA)

Load Current

20 0

-20

Output Voltage

Deviation (mV)

OUT

6 5 4

Deviation (V)

Input Voltage

Load Transient Response

= 5V, V

OUT

= 2.8V

OUT

= 1μF

Time (500μs/Div)

LOAD

Line Transient Response

= 4V to 5V

= 1μF

= 1mA to 60mA

RT9193-25xB I

= 1mA

LOAD

400 200

(mA)

Load Current

50 0

-50

Output Voltage

Deviation (mV)

V C

6 5

Deviation (V)

Input Voltage

Load Transient Response

= 5V, V

CIN = C

OUT

= 1μF

= 2.8V

Time (500μs/Div)

Line Transient Response

= 4V to 5V

= 1μF

OUT

= 1mA to 250mA

LOAD

RT9193-25xB I

LOAD

= 100mA

10 0

-10

Output Voltage

Deviation (mV)

CIN = C

200 100 0

-100

Noise (μV)

-200

= 4.5V

OUT

Time (50μs/Div)

= 1μF , X7R

Time (10ms/Div)

Noise

RT9193-30xB I

= 50mA

LOAD

f = 10Hz to 100kHz

10 0

-10

Output Voltage

Deviation (mV)

V CIN = C

200 100 0

-100

Noise (μV)

-200

= 4.5V

= 1μF , X7R

OUT

Time (100μs/Div)

Noise

f = 10Hz to 100kHz

Time (10ms/Div)

RT9193-15xU5 I

= 50mA

LOAD

DS9193-16 January 2013www.richtek.com

10 5

(V)

EN Pin Voltage

2 1

(V)

Output Voltage

= 5V

CIN = C

OUT

Start Up

= 1μF

Time (10μs/Div)

RT9193

RT9193-28xU5 No Load

DS9193-16 January 2013 www.richtek.com

RT9193

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 and the a mount of capacitance can be increased without limit. The input 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 clean analog ground. Any good quality cera mic or tantalum ca n be used for this ca pacitor . The capa 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 amount of capacitance and ESR in all LDOs application. The RT9193 is designed specifically to work with low ESR ceramic output ca pa citor in space-saving a nd 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 R T9193 still works well with output capa citor of other types due to the wide stable ESR ra nge. Figure 1 shows the curves of allowable ESR range as a function of load current for various output ca pacitor values. Output capacitor of larger capacitance can reduce noise and improve loa d transient response, sta bility, a nd PSRR. The output capa citor should be located not more than 0.5 inch from the V

pin of the RT9193 and returned to a

OUT

clean a nalog ground.

Region of Stable C

100

ESR vs. Load Current

OUT

Instable

Bypass Capacitor 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 cap acitor conne ction between the BP pin and GND pin be direct and PCB tra ces should be a s short a s possible. There is a relationship 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 assure 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 application, 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 :

ESR ( )

OUT

Stable

0.1

0.01

0.001 0 50 100 150 200 250 300

Load Current (mA)

RT9193-15xU5 CIN = C

= 1μF , X7R

OUT

PD = (V 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 ambient. The maximum power dissipation ca n be calculated by following formula :

D(MAX)

Where T

− V

= ( T

J(MAX)

OUT

J(MAX)

) x I

+ VIN x I

OUT

− TA ) /θ

is the maximum operation junction

temperature 125°C, TA is the ambient temperature and

Figure 1

the θ

is the junction to ambient thermal resistance.

DS9193-16 January 2013www.richtek.com

For recommended operating conditions specification of RT9193, where T

is the maximum junction

J(MAX)

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 D FN-6L 2x2 package is 165°C/W and MSOP8 package is 160°C/W on sta ndard JEDEC 51-3 thermal test board. The maximum power dissipation at TA = 25°C can be calculated by following f ormula :

RT9193

= (125°C − 25°C) / 333 = 300mW for

D(MAX)

SC-70-5 P

= (125°C − 25°C) / 250 = 400mW for

D(MAX)

TSOT-23-5/SOT -23-5 P

= (125°C − 25°C) / 165 = 606mW for

D(MAX)

W DFN-6L 2x2 P

= (125°C −25°C) / 160 = 625mW for

D(MAX)

MSOP-8 The maximum power dissipation depends on operating

ambient temperature for fixed T

and thermal

J(MAX)

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.

700

600

500

400

300

MSOP-8

TSOT-23-5/ SOT-23-5

SC 70-5

WDFN-6L 2x2

200

Power Dissipati on (mW)

100

0 25 50 75 100 125

Ambient Tem peratu re (°C)

Figure 2. Derating Curve f or Packages

DS9193-16 January 2013 www.richtek.com

RT9193

Outline Dimension

Dimensions In Millimeters Dimensions 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

SC-70-5 Surface Mount Package

DS9193-16 January 2013www.richtek.com

RT9193

Dimensions In Millimeters Dimensions 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

TSOT-23-5 Surface Mount Package

DS9193-16 January 2013 www.richtek.com

RT9193

Dimensions In Millimeters Dimensions In Inches

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

SOT-23-5 Surface Mount Package

DS9193-16 January 2013www.richtek.com

RT9193

SEE DETAIL A

DETAIL A

Pin #1 ID a nd T ie Bar Mark Option s

Note : The configuration of the Pin #1 identifier is optional, but must be located within the zone indicated.

Dimensions In Millimeters Dimensions In Inches

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

W-Type 6L DFN 2x2 Package

0.012 0.016

DS9193-16 January 2013 www.richtek.com

RT9193

Dimensions In Millimeters Dimensions 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

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.

DS9193-16 January 2013www.richtek.com

Richtek RT9193-15GB, RT9193-15PB, RT9193-15PU5, RT9193-16GB, RT9193-16PB Schematic [ru]

Specifications and Main Features

Frequently Asked Questions

User Manual