RT9161-50CX Richtek Technology Corporation, RT9161-50CX Datasheet

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RT9161-50CX

Manufacturer Part Number
RT9161-50CX
Description
5.0V 0.3A Linear Voltage Regulator
Manufacturer
Richtek Technology Corporation
Datasheet

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Part Number
Manufacturer
Quantity
Price
Part Number:
RT9161-50CX
Manufacturer:
RICHTEK/立锜
Quantity:
20 000
General Description
The RT9161/A is a 300/500mA fixed output voltage low
dropout linear regulator. Typical ground current is
approximately 110 A, from zero to maximum loading
conditions. Wide range of available output voltage fits
most of applications. Built-in output current-limiting most
thermal-limiting provide maximal protection against any
fault conditions.
For ease of application, the RT9161/A comes in the
popular 3-pin SOT-23(300mA), SOT-89 (300mA),
SOT-223 (500mA), or TO-92 packages.
Ordering Information
Marking Information
For marking information, contact our sales representative
directly or through a RichTek distributor located in your
area, otherwise visit our website for detail.
DS9161/A-22 February 2004
RT9161/A-
Package Type
ZL : TO-92 L Type
ZT : TO-92 T Type
X : SOT-89
G : SOT-223
V : SOT-23
Operating Temperature Range
C : Commercial Standard
P : Pb Free with Commercial Standard
500mA Output Current
300mA Output Current
Output Voltage
15 : 1.5V
16 : 1.6V
49 : 4.9V
50 : 5.0V
300/500mA Low Dropout Linear Voltage Regulator
:
Preliminary
Features
Applications
Pin Configurations
RT9161/A-
Low Dropout Voltage of 200mV at Output Current
100mA, 450mV at Output Current 300mA, and
750mV at 500mA Output Current
Guaranteed 300/500mA Output Current
Internal 1.5
Low Ground Current 110 A
2% Accuracy Output Voltage
Input Voltage Range up to 12V
Extremely Tight Load Regulation
Fast Transient Response
Current-limiting and Thermal-limiting
Voltage Regulator for LAN Card, CD-ROM, and DVD
Wireless Communication Systems
Battery Powered Systems
VIN
1
TO-92
GND
2 3
VOUT
CZL
P-MOSFET Draws No Base Current
RT9161/A-
GND
1
(TOP VIEW)
GND
SOT-223
1
TO-92
(TAB)
VIN
VIN
2 3
2
VOUT
VOUT
CZT
3
RT9161/A
GND
GND
www.richtek.com
1
1
SOT-23
SOT-89
(TAB)
VIN
VIN
3
2
VOUT
VOUT
2
3
1

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RT9161-50CX Summary of contents

Page 1

... Low Dropout Linear Voltage Regulator General Description The RT9161 300/500mA fixed output voltage low dropout linear regulator. Typical ground current is approximately 110 A, from zero to maximum loading conditions. Wide range of available output voltage fits most of applications. Built-in output current-limiting most thermal-limiting provide maximal protection against any fault conditions ...

Page 2

... RT9161/A Typical Application Circuit Functional Pin Description Pin Name Pin Function VOUT Output Voltage GND Ground VIN Power Input Function Block Diagram VIN www.richtek.com 2 Preliminary RT9161/A V VIN VOUT GND 1uF Error Amp Current Limiting Sensor Thermal Shutdown Reference V OUT C OUT ...

Page 3

... OUT 1mA 4.5 ~ 12V LINE 1mA ~ 300/500mA LOAD 5V OUT I = 300/500mA 12V L IN < 3V. IN RT9161/A 300° C/W 15° C/W 60° C/W Min Typ Max Units - 150 PPM OUT -- 1 30/50 mV 350 580 -- mA 500 900 ...

Page 4

... RT9161/A Typical Operating Characteristics Temperature Stability 3.4 3.2 3 2.8 2.6 2.4 -50 - Temperature Dropout Voltage (V 1 0.8 0.6 0.4 0 100 200 I Load Line Transient Response Electrolytic OUT 0.1A OUT 100 0 -100 -200 Time (100 S/Div) www.richtek.com 4 Preliminary V = 3.3V OUT V = 2.5V OUT 50 75 100 125 ( C) ° ...

Page 5

... Frequency (Hz) DS9161/A-22 February 2004 Preliminary 3.3V OUT 2.5V OUT 100mA 10mA 10K 100K 1M 10000 100000 1000000 RT9161/A Load Transient Response 150 100 OUT -50 200 100 T 10 -100 Time (100 S/Div) Load Transient Response ...

Page 6

... RT9161/A Application Information A 10uF capacitor with 200m or higher ESR, connecting between VOUT and GND pins, is recommended for stability. A capacitor with ESR smaller than 200 m may cause VOUT oscillation as shown in Figure 1. Operating temperature should be well considered to ensure that the capacitance is no less than 10uF over the operating temperature range ...

Page 7

... Min Max 3.175 4.191 1.143 1.372 0.406 0.533 0.406 0.533 4.445 5.207 3.429 -- 4.318 5.334 1.143 1.397 12.700 -- 3-Lead TO-92 Plastic Package RT9161/A A Dimensions In Inches Min Max 0.125 0.165 0.045 0.054 0.016 0.021 0.016 0.021 0.175 0.205 0.135 -- 0.170 0.210 0.045 0.055 ...

Page 8

... RT9161/A Symbol www.richtek.com 8 Preliminary Dimensions In Millimeters Min Max 0.889 1.295 -- 0.152 1.397 1.803 0.356 0.508 2.591 2.997 2.692 3.099 1.803 2.007 0.102 0.254 0.356 0.610 SOT-23 Surface Mount Package H L Dimensions In Inches Min Max ...

Page 9

... SOT-89 Surface Mount Package RT9161 Dimensions In Inches Min Max 0.055 0.063 0.014 0.019 0.094 0.102 0.016 0.021 -- 0.167 0.031 0.047 ...

Page 10

... RT9161/A Symbol RICHTEK TECHNOLOGY CORP. Headquarter 5F, No. 20, Taiyuen Street, Chupei City Hsinchu, Taiwan, R.O.C. Tel: (8863)5526789 Fax: (8863)5526611 www.richtek.com 10 Preliminary Dimensions In Millimeters Min Max -- 1.803 0.020 0.100 0.610 0.787 3.302 3.708 6.706 7 ...

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