Technology Licensed from International Rectifier
APU1206/APU1207/APU1208/APU1209
1A VERY LOW DROPOUT POSITIVE
FIXED AND ADJUSTABLE REGULATORS
FEATURES
Low Dropout Voltage (500mV at 1A)
1% Voltage Reference Accuracy
Low Ground Current
1µA Maximum Quiescent Current in Shutdown
(APU1207,
APU1208)
Fast Transient Response
Current Limit and Thermal Shutdown
Error Flag Signal for Output out of Regulation
(APU1207,
APU1208)
RoHS Compliant
DESCRIPTION
The
APU1206
family of devices are ultra low dropout 1A
regulators using PNP transistor as the pass element.
These products are ideal when a single input supply is
only available and the dropout voltage is less than 1V,
exceeding the minimum dropout characteristics of NPN/
PNP hybrid regulators. One common application of these
regulators is where input is 3.3V and a 2.5V output is
needed.
Besides the low dropout of less than 0.5V, other fea-
tures of the family of the parts are: micro-power shut-
down capability and output UVLO detection where Flag
pin is switched low when output is below 5% of its nomi-
nal point.
APPLICATIONS
2.5V Supply from 3.3V Input for the new
generation of Logic ICs
Computer Mother Board, Add-On Cards
High Efficiency Post Regulator in Switch Mode
Power Supply (SMPS)
TYPICAL APPLICATION
V
OUT
3
C2
V
OUT
APU1206-
XX
Gnd
2
V
IN
1
V
IN
C1
Figure 1 - Typical application of the 1206-XX in a 3-Pin SOT-223 package.
Data and specifications subject to change without notice.
200706062-1/9
A-POWER [ ADVANCED POWER ELECTRONICS CORP. ]
