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RT9002C-GS Datasheet

  • RT9002C-GS

  • Dual Low-Dropout Regulator with Detector

  • 11頁

  • RICHTEK   RICHTEK

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RT9002A/B/C
Dual Low-Dropout Regulator with Detector
General Description
The RT9002A/B/C is a dual-channel, low noise, and low
dropout regulator. The first regulator is capable of sourcing
240mA, while the second regulator can source up to
500mA and includes a voltage detection function. The
RT9002A/B/C performance is optimized for CD/DVD-ROM,
CD/RW or wireless communication supply applications.
The RT9002A/B/C regulator is stable with output capacitors
as low as 1渭F. The other features include high output
accuracy, ultra-fast transient response, tight load and line
regulation, current limiting/thermal protection and high
ripple rejection ratio. The RT9002A/B/C is
available in
SOP-8 package requiring minimum board space and
smallest components.
Features
渭
Low Quiescent Current (Typically 70渭A)
Wide Operating Voltage Ranges : 2.5V to 5.5V
Ultra-Fast Transient Response
Tight Load and Line Regulation
Current Limiting Protection
Thermal Shutdown Protection
Only low-ESR Ceramic Capacitors Required for
Stability
Custom LDO V
OUT1
, V
OUT2
Voltage Available from
1.5V to 3.3V
Custom V
IN
Detector Available from 3.5V to 4.0V
RoHS Compliant and 100% Lead (Pb)-Free
Applications
Ordering Information
RT9002A/B/C
-
Package Type
S : SOP-8
Operating Temperature Range
P : Pb Free with Commercial Standard
G : Green (Halogen Free with Commer-
cial Standard)
Output Voltage : VOUT1/VOUT2
A : 2.5V/3.3V
B : 1.5V/2.8V
C : 2.5V/3.3V
CD/DVD-ROM, CD/RW
Wireless LAN Card/Keyboard/Mouse
Battery-Powered Equipment
XDSL Router
Pin Configurations
(TOP VIEW)
VIN1
VOUT1
Cd
VIN2
2
3
4
8
7
6
5
EN1
GND
VDOUT
VOUT2
Note :
RichTek Pb-free and Green 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.
SOP-8
Typical Application Circuit
V
IN1
1
C
IN1
1uF
8
VIN1
VOUT1
2
3
Cd
6
5
C
OUT2
1uF
C
OUT1
1uF
R1
100k
V
OUT1
RT9002A/B/C
Cd
EN1
VDOUT
Chip Enable
V
IN2
V
DOUT
V
OUT2
V
IN2
4
C
IN2
1uF
VIN2
GND
7
VOUT2
DS9002ABC-03 March 2007
www.richtek.com
1

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