Rev. 12/7/00

SPX2730/31/32/33

3A High Current Low Dropout Voltage Regulator

Adjustable & Fixed Output,

Fast Response

(ADVANCED INFORMATION)

FEATURES

APPLICATIONS

• Adjustable Output Down To 1.2V

• Powering VGA & Sound Card

• 1% output accuracy @ 3.3V, 5.0V

• Power PCSupplies

• Output Current of 3A

• SMPS Post-Regulator

• Low Dropout Voltage 370mV(Typ.) @ 3A.

• High Efficiency “Green” Computer Systems

• Extremely Tight Load And Line Regulation

• High Efficiency Linear Power Supplies

• Extremely Fast Transient Response

• Portable Instrumentation

• Standard 3-Terminal Low Cost TO-220, TO-263

• Constant Current Regulators

• Reverse-battery and “Load Dump” Protection

• Adjustable Power Supplies

• Zero Current Shutdown Mode (5-Pin Versions)

• Battery charger

• Error Flag Signal Output Out-of Regulation (5-Pin Versions)

PRODUCT DESCRIPTION

The SPX2730/31/32/33 is a 3A high accuracy, low dropout voltage regulator (370mV(Typ)@ 3A). The SPX2730/31/32/33 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 SPX2730/31/32/33 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 SPX2730/31/32/33 are offered in 3 & 5 pin TO-220 & TO-263 packages compatible with other 3 terminal regulators.

PIN CONNECTIONS

Top View

TO-263-3 (T)

1

SPX2730

2

3

TO-263-5 (T)

Top View

45

SPX2731/32/33

12 3

Front View

TO-220-3 (U)

SPX2730

1

23

TO-220-5 (U)

Front View

5

4

3

2

1

SPX2731/32/33

SPX2731

SPX2732

SPX2733

1) ENABLE

2) INPUT

3) GND

4) OUTPUT

5) FLAG

1) ENABLE

2) INPUT

3) GND

4) OUTPUT

5) ADJUST

1) FLAG

2) INPUT

3) GND

4) OUTPUT

5) ADJUST

SPX2731

SPX2732

SPX2733

1) ENABLE

2) INPUT

3) GND

4) OUTPUT

5) FLAG

1) ENABLE

2) INPUT

3) GND

4) OUTPUT

5) ADJUST

1) FLAG

2) INPUT

3) GND

4) OUTPUT

5) ADJUST