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RT9172F-27CM Datasheet(PDF) 1 Page - Richtek Technology Corporation

Part # RT9172F-27CM
Description  3A FIXED OUTPUT VOLTAGE LDO REGULATOR
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Manufacturer  RICHTEK [Richtek Technology Corporation]
Direct Link  http://www.richtek.com
Logo RICHTEK - Richtek Technology Corporation

RT9172F-27CM Datasheet(HTML) 1 Page - Richtek Technology Corporation

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Preliminary
RT9172
DS9172-03 April 2002
www.richtek-ic.com.tw
1
3A Fixed Output Voltage LDO Regulator
General Description
The RT9172 series of low-dropout linear regulators
operate from a +2.25V to +6.0V input supply. A wide
range of preset output voltage options is available.
These low dropout linear regulators respond very
fast to step changes in load, which are suitable for
low voltage microprocessor applications. The
RT9172 uses an internal PMOS as the pass device,
which does not cause extra GND current in heavy
load and dropout condition. The shutdown mode of
low operation current makes the IC suitable for
power-saving systems. The other features include
current limiting and over temperature protection.
Ordering Information
RT9172 -
Features
Low Dropout Voltage
Low Ground Pin Current
Load Regulation of 0.4% at 3A
0.5
µµµµA Quiescent Current in Shutdown Mode
Guaranteed Output Current of 3A DC
Available in TO-263 and TO-220 Packages
Output Voltage Accuracy
±±±±1.5%
Error Flag Indicates Output Status
Sense Option Improves Better Load Regulation
Extremely Low Output Capacitor Requirements
Over-temperature/Over-current Protection
Applications
Microprocessor Power Supplies
GTL, GTL+, BTL, and SSTL Bus Terminators
Power Supplies for DSPs
SCSI Terminator
Post Regulators
High Efficiency Linear Regulators
Battery Chargers
Other Battery Powered Applications
Pin Configurations
Part Number
Pin Configurations
RT9172-
CT
(Plastic TO-220)
TOP VIEW
1. VIN
2. GND (TAB)
3. VOUT
RT9172-
CM
(Plastic TO-263)
TOP VIEW
1. VIN
2. GND (TAB)
3. VOUT
RT9172-
CG
(Plastic SOT-223)
TOP VIEW
1. VIN
2. GND (TAB)
3. VOUT
To be continued
Operating temperature range
C: Commercial standard
Package type
T5 : TO-220-5
M5 : TO-263-5
T : TO-220
M : TO-263
G : SOT-223
Output voltage
15 : 1.5V
16 : 1.6V
:
32 : 3.2V
33 : 3.3V
S: Pin out exchange
N : Pin 5 bond sense
F : Pin 5 bond flg
12 3
123
123


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