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RT9182 Datasheet Preview

RT9182 Datasheet

200mA LDO Regulator

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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 165μA supply current (both LDOs on)
independent of load current and dropout conditions. The
EN1 and EN2 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.
Ordering Information
RT9182
Package Type
ES : SOT-23-6
Operating Temperature Range
C : Commercial Standard
P : Pb Free with 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)
D : 2.8V (Output1), 2.5V (Output2)
E : 2.8V (Output1), 1.8V (Output2)
F : 2.5V (Output1), 2.5V (Output2)
G : 2.5V (Output1), 1.8V (Output2)
H : 3.3V (Output1), 2.5V (Output2)
I : 3.3V (Output1), 1.8V (Output2)
J : 3.0V (Output1), 2.5V (Output2)
K : 3.0V (Output1), 1.8V (Output2)
L : 2.8V (Output1), 1.85V (Output2)
Note :
RichTek Pb-free 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.
100%matte tin (Sn) plating.
Features
z Up to 200mA Output Current (Each LDO)
z Dual Shutdown Pins Control Each Output
z 124μVRMS Low Noise Output
z Current Limiting and Thermal Protection
z Short Circuit Protection
z 120mV Dropout at 100mA Load
z Two LDOs in SOT-23-6 Package
z RoHS Compliant and 100% Lead (Pb)-Free
Applications
z Cellular Phones
z Laptop, Notebook, and Palmtop Computers
z Battery-powered Equipment
z Hand-held Equipment
z Wireless LAN
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.
Pin Configurations
(TOP VIEW)
VOUT1 VIN EN1
654
1 23
VOUT2 GND EN2
SOT-23-6
Note : There is no pin1 indicator on top mark for SOT-23-6
type, and pin 1 will be lower left pin when reading top mark
from left to right.
DS9182-14 April 2005
www.richtek.com
1




Richiek

RT9182 Datasheet Preview

RT9182 Datasheet

200mA LDO Regulator

No Preview Available !

RT9182
Typical Application Circuit
Preliminary
Chip Enable
3
VOUT2
1
2.2uF
EN2 EN1
VOUT2 VOUT1
RT9182
VIN
GND
2
Chip Enable
4
6 VOUT1
2.2uF
5 VIN
2.2uF
Functional Pin Description
Pin No.
1
2
3
4
5
6
Pin Name
VOUT2
GND
EN2 Note
EN1 Note
VIN
VOUT1
Pin Function
Channel 2 Output Voltage
Common Ground
Chip Enable (Active High)
Chip Enable (Active High)
Supply Input
Channel 1 Output Voltage
Note: If EN1 and EN2 are both low, both regulators and the reference turn off.
Function Block Diagram
VIN
VOUT1
Current Limit
Thermal Protection
Current Limit
-
+
VREF
-
+
EN1 Bias
VOUT2
GND
EN2
www.richtek.com
2
DS9182-14 April 2005


Part Number RT9182
Description 200mA LDO Regulator
Maker Richiek
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RT9182 Datasheet PDF






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