Preliminary
RT9022
High Voltage, Low Quiescent, 60mA LDO Regulator
General Description
The RT9022 is designed for positive CCD bias applications
with critical performance and space requirements. The
RT9022 performance is optimized for battery-powered
systems to deliver low noise and low quiescent current
and with soft start function.
The RT9022 also
works well with low-ESR ceramic
capacitors, reducing the amount of board space necessary
for power applications and consumes less than 1μA in
shutdown mode.
The other features include ultra low dropout voltage, high
output accuracy, and current limiting protection. The part
is available in the SOT-23-6, TSOT-23-6 and SC-70-6
packages.
Features
Low Quiescent Current (Typically 40μA)
μ
Wide Operating Voltage Ranges : 5V to 20V
Ultra-Fast Transient Response
Tight Load and Line Regulation
Current Limiting Protection
Thermal Shutdown Protection
Adjustable Soft Start Time
RoHS Compliant and 100% Lead (Pb)-Free
Applications
DSC
Camcorder
Pin Configurations
(TOP VIEW)
EN
6
1
VIN
SS
5
2
FB
4
3
Ordering Information
RT9022
Package Type
E : SOT-23-6
J6 : TSOT-23-6
U6 : SC-70-6
Operating Temperature Range
P : Pb Free with Commercial Standard
G : Green (Halogen Free with Commer-
cial Standard)
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.
V
IN
GND VOUT
SOT-23-6 / TSOT-23-6 / SC-70-6
Note
: There is no pin1 indicator on top mark for SOT-23-6
and SC-70-6 type, and pin 1 will be lower left pin when reading
top mark from left to right.
Typical Application Circuit
1
1uF
ON
OFF
5
SS
GND
2
6 EN
VIN
VOUT
3
1nF
FB
4
R2
R1
2.2uF
V
OUT
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.
RT9022
V
OUT
= V
FB
(1+ R1 )V
R2
DS9022-00
September 2007
www.richtek.com
1
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
