APL1541
1A Low Dropout Fast Response Positive Adjustable Regulator and Fixed 3.3V
Features
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Guaranteed Output Voltage Accuracy within 2%
Fast Transient Response
Guaranteed Dropout Voltage at Multiple Cur-
rents
Load Regulation : 0.1% Typ.
Line Regulation : 0.03% Typ.
Low Dropout Voltage : 1.1V Typ. at I
OUT
=1A
Current Limit : 1A Typ. at T
J
=125
°C
On-Chip Thermal Limiting : 150
°C
Typ.
Adjustable Output : 1.25~7.75V
Standard 8-pin SO Power Package
General Description
The APL1541 is a low dropout three-terminal adjust-
able regulators with 1A output current capability. In
order to obtain lower dropout voltage and faster tran-
sient response, which is critical for low voltage ap-
plications , the APL1541 has been optimized.
The device is available in an adjustable version and
fixed output voltages of 3.3V, the output available
voltage range is from 1.25~7.75V with an input sup-
ply below 12V. Dropout voltage is guaranteed at a
maximum of 1.3V at 1A.
Current limit is trimmed to ensure specified output
current and controlled short-circuit current. On-chip
thermal limiting provides protection against any com-
bination of overload that would create excessive junc-
tion temperatures.
The APL1541 is available in the industry standard 8-
pin SO power package which can be used in appli-
cations where space is limited.
Applications
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Peripheral Cards
Active SCSI Terminators
Low Voltage Logic Supplies
Post Regulator for Switching Power Supply
ADJ/GND
V
IN
NC
2
7
Pin Description
NC
1
8
V
OUT
V
OUT
V
OUT
V
OUT
APL1541-33
3
6
4
5
Front View for SO - 8
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. A.2 - Oct., 2003
1
www.anpec.com.tw
ANPEC [ ANPEC ELECTRONICS COROPRATION ]
