AS2941
1A Low Dropout Voltage Regulators
(ADVANCED INFORMATION)
FEATURES
APPLICATIONS
•Output Current 1A
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Battery Powered Systems
Cordless Telephones
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Internal Short Circuit Current Limit
Dropout Voltage 0.5V at 1A Output
Extremely Tight Load and Line Regulation
Very Low Temperature Coefficient
Automotive Electronics
Portable / Palm Top / Notebook Computers
Portable Consumer Equipment
Portable Instrumentation
SMPS Post-Regulator
Mirror Image Insertion Protection
Unregulated DC Input Can Withstand -20V Reverse Battery
and +60V Positive Transients
Voltage Reference
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Direct Replacement For LM2941 Socket
Adjustable Output Between 5V to 20V
TTL, CMOS Compatible ON/OFF Switch
PRODUCT DESCRIPTION
The AS2941 is a low power positive Adjustable Voltage Regulator. The AS2941 offers 1A output current with dropout voltage of
only 0.5 Volts with a maximum of 1V dropout over temperature. The quiescent current is 30mA at differential output of 5V and
output current of 1A. The higher quiescent current exists only when the device is in dropout mode
(VIN – VOUT < 3V).
Other key features of this device include higher output current, positive transient protection up to 60V (Load dump), and ability to
survive an unregulated input voltage transient of -20V below ground (reverse battery). The regulator will automatically shut down to
protect both the internal circuits and the load. This device also features short circuit and thermal overload protection.
The AS2941 is offered in a 5-pin TO-263 and TO-220 package compatible with other adjustable regulators. This device offers an
adjustable output voltage from 5V to 20V. AS2941 is a direct replacement to LM2941.
ORDERING INFORMATION
TO-263
TO-220
Oper. Temp.
PIN CONNECTIONS
5-PIN
5-PIN
Range
AS2941T
AS2941U
-40°C to +105°C
TO-220-5 Package
TO-263-5 Package
AS2941
AS2941
1
2 3 4 5
1) ADJ
Shutdown
GND
VIN
2)
3)
4)
5)
1
2 3 4 5
VOUT
Top View
Top View
Rev. 9/29/00
SIPEX [ SIPEX CORPORATION ]
