APL5901/2
Low I
Q
, Low Dropout 900mA Fixed Voltage Regulator
Features
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
Low Noise : 50µV
RMS
(100Hz to 100kHz)
Low Quiescent Current : 50µA (No load)
Low Dropout Voltage : 210mV (@900mA)
Very low Shutdown Current : < 1µA
Fixed Output Voltage : 1.3V ~ 3.4V
Stable with 4.7µF Output Capacitor
Stable with Aluminum , Tantalum or Ceramic
Capacitors .
Reverse Current Protection
No Protection Diodes Needed
Built in Thermal Protection
Built in Current Limit Protection
Controlled Short Circuit Current : 200mA
Fast Transient Response
Short Setting Time
SOT-89, SOT-89-5, SOT-223, SO-8 ,TO-252
and TO-252-5 Packages
Lead Free Available (RoHS Compliant)
Design with an internal P-channel MOSFET pass
transistor, the APL5901/2 maintains a low supply
current, independent of the load current and dropout
voltage. Other features include reverse current
protection, thermal-shutdown protection, current limit
protection to ensure specified output current and con-
trolled short-circuit current. The APL5901/2 regulator
come in a miniature SOT-89, SOT-89-5, SOT-223, SO-
8, TO-252 and TO-252-5 packages.
Pin Configuration
APL5901
BP
TAB is GND
GND SHDN
5
1
2
3
4
2
3
1
V
IN
GND
V
OUT
V
OUT
GND
V
IN
SOT-89 (Top View)
SOT-89-5 (Top View)
TAB is GND
Applications
IN
1
2
3
4
8
7
6
5
OUT
GND
GND
•
•
•
Notebook Computer
PDA or Portable Equipments
Noise-Sensitive Instrumentation Systems
GND
GND
SHDN
1
BYP
2
3
General Description
The APL5901/2 is micropower, low noise, low dropout
linear regulator. Operate from 2.7V to 6V input voltage
and deliver up to 900mA. Typical output noise is just
50µV
RMS
with the addition of an external 0.1µF bypass
capacitor in BP pin and typical dropout voltage is only
210mV at 900mA loading. Designed for use in bat-
tery-powered system, the low 50µA quiescent cur-
rent makes it an ideal choice.
V
IN
GND
V
OUT
SO-8 (Top View)
TAB is GND
SOT-223 (Top View)
V
OUT
BP
GND
SHDN
V
IN
TAB is GND
1
2
3
V
IN
V
OUT
TO-252 (Top View)
TO-252-5 (Top View)
ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and advise
customers to obtain the latest version of relevant information to verify before placing orders.
Copyright
©
ANPEC Electronics Corp.
Rev. B.2 - May., 2005
1
www.anpec.com.tw
1
2
3
4
5
ANPEC [ ANPEC ELECTRONICS COROPRATION ]
