RT9182 Datasheet, PDF (1/10 Pages) Richtek Technology Corporation – DUAL, LOW-NOISE, 200mA LDO REGULATOR

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 +6.5V input.
The RT9182 uses an internal PMOS as the pass
device, which consumes 165µA supply current (both
LDOs on) independent of load current and dropout
conditions. The SHDN pin controls both outputs
simultaneously and consumes nearly zero operation
current in the disable mode making the IC suitable
for battery-power devices. Other features include a
reference voltage bypass pin to improve low noise
performance, current limiting, and over temperature
protection.
Ordering Information
RT9182… … …
Package type
E : SOT-26
Operating temperature range
C : Commercial standard
Output voltage
A : 2.8V (Output1), 2.8V (Output2)
B : 3.0V (Output1), 3.0V (Output2)
Marking Information
Part Number
Marking
RT9182ACE
2M
RT9182BCE
2Q
Features
• Up to 200mA Output Current (Each LDO)
• Shutdown Function
• 29µV_RMS Low Noise Output
• Current Limiting and Thermal Protection
• Short Circuit Protection
• 120mV Dropout at 100mA Load
• Two LDOs in SOT-26 Package
Applications
z Cellular Phones
z Laptop, Notebook, and Palmtop Computers
z Battery-powered Equipment
z Hand-held Equipment
Pin Configurations
Part Number
Pin Configurations
RT9182…CE
(Plastic SOT-26)
654
123
TOP VIEW
1. VOUT2
2. GND
3. BP
4. SHDN
5. VIN
6. VOUT1
Typical Application Circuit
ON
OFF
V_OUT2
2.2µF
SHDN
VOUT2 VOUT1
RT9182
10nF
BP
VIN
GND
V_OUT1
2.2µF
V_IN
2.2µF
DS9182-02 April 2002
www.richtek-ic.com.tw
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