RT9183
Ultra Low Dropout 1.5A Linear Regulator
General Description
The RT9183 series are high performance linear voltage
regulators that provide ultra low-dropout voltage, high output
current with low ground current. It operates from an input
of 2.3V to 5.5V and provides output current up to 1.5A
thus is suitable to drive digital circuits requiring low voltage
at high currents.
The RT9183 has superior regulation over variations in line
and load. Also it provides fast respond to step changes in
load. Other features include over-current and over-
temperature protection. The adjustable version has enable
pin to reduce power consumption in shutdown mode.
The devices are available in fixed output voltages
of 1.2V,
1.8V, 2.5V, 3.3V and as an adjustable device with a 0.8V
reference voltage. The RT9183 regulators are available in
3-lead SOT-223 and TO-263 packages (fixed output only
for the 3-lead option). Also available are 5-lead TO-263
and fused SOP-8 packages with two external resistors to
set the output voltage ranges from 0.8V to 4.5V.
Features
330mV Dropout @ 1.5A
380μA Low Ground Pin Current
μ
Excellent Line and Load Regulation
0.1μA Quiescent Current in Shutdown Mode
μ
Guaranteed 1.5A Output Current
Fixed Output Voltages : 1.2V, 1.8V, 2.5V, 3.3V
Adjustable Output Voltage from 0.8V to 4.5V
Over-Temperature/Over-Current Protection
RoHS Compliant and 100% Lead (Pb)-Free
Applications
Battery-Powered Equipment
Mother Board/Graphic Card
Peripheral Cards
PCMCIA Card
Pin Configurations
(TOP VIEW)
Ordering Information
RT9183
-
Package Type
G : SOT-223
GF : SOT-223 (F-Type)
S : SOP-8
M : TO-263
M5 : TO-263-5
Operating Temperature Range
P : Pb Free with Commercial Standard
G : Green (Halogen Free with Commer-
cial Standard)
Output Voltage
Defauit : Adjustable
12 : 1.2V
18 : 1.8V
25 : 2.5V
33 : 3.3V
H : Chip Enable High
L : Chip Enable Low
1
2
3
1
2
3
VIN
GND
(TAB)
VOUT
GND
VOUT
(TAB)
VIN
SOT-223
SOT-223 (F-Type)
1
2
3
1
2
3
4
5
VIN
VOUT
GND(TAB)
EN VIN
VOUT ADJ
GND(TAB)
TO-263
EN
VIN
VOUT
ADJ
2
3
4
8
7
6
5
TO-263-5
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.
DS9183-12 March 2007
SOP-8
www.richtek.com
1
GND
GND
GND
GND
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
