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SPX2840AU

4A Low Dropout Voltage Regulator Adjustable & Fixed 3.3V

Signal Processing Technologies 

FEATURES

• Adjustable Output Down To 1.25V Or Fixed 3.3V

• Output Current Of 4A

• Low Dropout Voltage

• Extremely Tight Load And Line Regulation

• Current & Thermal Limiting

• Standard 3-Terminal Low Cost TO-220

SPX2840

4A Low Dropout Voltage Regulator

Adjustable & Fixed 3.3V

APPLICATIONS

• Powering Intel Pentium µP from +5V Supplies

• Power PC Supplies

• SMPS Post-Regulator

• High Efficiency “Green” Computer Systems

• High Efficiency Linear Power Supplies

• Portable Instrumentation

• Constant Current Regulators

• Adjustable Power Supplies

• Battery Charger

PRODUCT DESCRIPTION

The SPX2840 is a low power 4A Adjustable Voltage Regulator that is very easy to use. It requires only 2 external resistors to set the

output voltage. This device is an excellent choice for use in Powering Intel Microprocessor to convert from +5V to 3.3V supplies

and as a post regulator for switching supplies applications. The SPX2840 features low dropout of a maximum 1.3 volts.

The SPX2840 offers over-current limit and full protection against reversed input polarity, reversed load insertion, over temperature

operation, and positive and negative transient voltage. On-Chip trimming adjusts the reference voltage to 1%. The IQ of this device

flows in to the load, which increases the efficiency.

The SPX2840 is offered in a 3-pin TO-220 package compatible with other 3 terminal regulators. For a 3A low dropout regulator refer

to the SPX2830 data sheet.

ORDERING INFORMATION

TO-220-3 (U)

SPX2840

123

ADJ/GND VOUT VIN

Front View

Rev. 10/23/00

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