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RT9182B Datasheet

  • RT9182B

  • SHDN.Fast Transient Response

  • 10頁(yè)

  • ETC

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Preliminary
RT9182
Dual, Low-Noise, 200mA LDO Regulator
General Description
The RT9182 is a dual-channel, low noise, and low
dropout regulator supplying up to 200mA current at
each channel. The output voltage ranges from 1.5V
to 3.3V in 100mV increments and 2% accuracy by
operating from a +2.7V to +5.5V input.
The RT9182 uses an internal PMOS as the pass
device, which consumes 165碌A(chǔ) supply current (both
LDOs on) independent of load current and dropout
conditions. The SHDN1 and SHDN2 pins control
each output respectively. When both outputs
shutdown simultaneously, the chip will be turn off
and consumes nearly zero operation current which is
suitable for battery-power devices. Other features
include a current limiting, and over temperature
protection.
Features
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Up to 200mA Output Current (Each LDO)
Dual Shutdown Pins Control Each Output
124碌V
RMS
Low Noise Output
Current Limiting and Thermal Protection
Short Circuit Protection
120mV Dropout at 100mA Load
Two LDOs in SOT-26 Package
Applications
Cellular Phones
Laptop, Notebook, and Palmtop Computers
Battery-powered Equipment
Hand-held Equipment
Wireless LAN
Pin Configurations
Part Number
Pin Configurations
TOP VIEW
6
5
4
Ordering Information
RT9182
Package type
ES : SOT-26
Operating temperature range
C : Commercial standard
Output voltage
A : 2.8V (Output1), 2.8V (Output2)
B : 3.0V (Output1), 3.0V (Output2)
C : 2.8V (Output1), 3.0V (Output2)
RT9182 CES
(Plastic SOT-26)
1
2
3
1.
2.
3.
4.
5.
6.
VOUT2
GND
SHDN2
SHDN1
VIN
VOUT1
Typical Application Circuit
ON
OFF
V
OUT2
2.2碌F
SHDN2 SHDN1
VO UT2 VO UT1
ON
OFF
V
OUT1
2.2碌F
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.
RT9182
VIN
GND
V
IN
2.2碌F
DS9182-05 February 2003
www.richtek.com
1

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