FEATURES

HIGH OUTPUT CURRENT: 2A

OUTPUT SWINGS TO: 150mV of Rails with IO = 2A

THERMAL PROTECTION

ADJUSTABLE CURRENT LIMIT

TWO FLAGS: Current Limit and Temperature

Warning

LOW SUPPLY VOLTAGE OPERATION: 2.7V to 5.5V

SHUTDOWN FUNCTION WITH OUTPUT DISABLE

SMALL POWER PACKAGE

APPLICATIONS

THERMOELECTRIC COOLER DRIVER

LASER DIODE PUMP DRIVER

VALVE, ACTUATOR DRIVER

SYNCHRO, SERVO DRIVER

TRANSDUCER EXCITATION

GENERAL LINEAR POWER BOOSTER FOR

OP AMPS

DESCRIPTION

The OPA567 is a low-cost, high-current, operational amplifier

designed for driving a wide variety of loads while operating on

low-voltage supplies. It operates from either single or dual

supplies for design flexibility and has rail-to-rail swing on the

input and output. Output swing is within 300mV of the supply

rails, with output current of 2A. Smaller loads allow an output

swing closer to the rails.

The OPA567 is unity gain stable, easy to use, and free from

the phase inversion problems found in some power amplifiers.

High performance is maintained at voltage swings near

the output rails.

The OPA567 provides an accurate user-selected current

limit set with an external resistor, or digitally adjusted via a

Digital-to-Analog Converter (DAC).

The output of the OPA567 can be independently disabled

using the Enable pin. This feature saves power and protects

the load.

Two flags are provided. The current limit flag, IFLAG, warns of

current limit conditions. TFLAG is a thermal flag that warns of

thermal overstress. The TFLAG pin can be connected to the

Enable pin to provide a thermal shutdown solution.

The OPA567 is available in a tiny 5mm x 5mm Quad

Flatpack No-lead (QFN) package and features an exposed

thermal pad that enhances thermal and electrical characteristics.

It is small and easy to heat sink. The OPA567 is

specified for operation over the industrial temperature range,

–40°C to +85°C.