AS2730/31/32/33
3A High Current Low Dropout Voltage Regulator
Adjustable & Fixed Output,
Fast Response
(ADVANCED INFORMATION)
FEATURES
APPLICATIONS
• Adjustable Output Down To 1.2V
• 1% output accuracy @ 3.3V, 5.0V
• Output Current of 3A
• Powering VGA & Sound Card
• Power PCSupplies
• SMPS Post-Regulator
• Low Dropout Voltage 370mV(Typ.) @ 3A.
• Extremely Tight Load And Line Regulation
• Extremely Fast Transient Response
• Standard 3-Terminal Low Cost TO-220, TO-263
• Reverse-battery and “Load Dump” Protection
• Zero Current Shutdown Mode (5-Pin Versions)
• High Efficiency “Green” Computer Systems
• High Efficiency Linear Power Supplies
• Portable Instrumentation
• Constant Current Regulators
• Adjustable Power Supplies
• Battery charger
• Error Flag Signal Output Out-of Regulation (5-Pin Versions)
PRODUCT DESCRIPTION
The AS2730/31/32/33 is a 3A high accuracy, low dropout voltage regulator (370mV(Typ)@ 3A). The AS2730/31/32/33 is designed
for low voltage application that requires lower dropout voltage and faster transient response. This device is an excellent choice for use
in powering low voltage microprocessor that require a lower dropout, faster transient response to regulate from +2.5V to 3.8V supplies
and as a post regulator for switching supplies applications.
The AS2730/31/32/33 offers full protection against over-current faults, reversed input polarity, reversed load insertion, and positive
and negative transient voltage. On-Chip trimming adjusts the reference voltage to 1%. Features such as enable pin, Error flag pin are
also included in the 5-pin package.
The AS2730/31/32/33 are offered in 3 & 5 pin TO-220 & TO-263 packages compatible with other 3 terminal regulators. For a 5A
low dropout regulator refer to the AS2750 datasheet.
ORDERING INFORMATION
TO-220
3-PIN
TO-263
3-PIN
AS2730/31/32/33U-X AS2730/31/32/33T5-X
X = Output Voltage (x = 3.0V, 5.0V, or Blank for Adj (5-Pin Devices Only)
Consult with factory for other fixed output voltages.
PIN CONNECTIONS
TO-220-5 (U)
TO-220-3 (U)
TO-263-5 (T)
TO-263-3 (T)
AS2731
AS2733
AS2732
AS2731
AS2733
AS2732
ALPHA
ALPHA
ALPHA
AS2730
ALPHA
AS2730
1) FLAG
1) ENABLE
1) FLAG
1) ENABLE
1) ENABLE
2) INPUT
3) GND
AS2731/32/33
1
1) ENABLE
2) INPUT
3) GND
AS2731/32/33
2) INPUT
3) GND
2) INPUT
3) GND
2) INPUT
3) GND
2) INPUT
3) GND
2
4
3 5
1
2
3
1
2
3
4
5
1
3
2
4) OUTPUT
5) ADJUST
4) OUTPUT
5) FLAG
4) OUTPUT
5) ADJUST
4) OUTPUT
5) FLAG
4) OUTPUT
5) ADJUST
4) OUTPUT
5) ADJUST
Front View
Top View
Top View
Front View
Rev. 10/17/00
SIPEX [ SIPEX CORPORATION ]
