OPA567| Datasheet

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OPA567
OP A56 7

SBOS287A JUNE 2005 REVISED SEPTEMBER 2005

Rail-to-Rail I/O, 2A POWER AMPLIFIER
FEATURES
q q q q q 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

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.

q LOW SUPPLY VOLTAGE OPERATION: 2.7V to 5.5V q SHUTDOWN FUNCTION WITH OUTPUT DISABLE q SMALL POWER PACKAGE

APPLICATIONS
q q q q q q THERMOELECTRIC COOLER DRIVER LASER DIODE PUMP DRIVER VALVE, ACTUATOR DRIVER SYNCHRO, SERVO DRIVER TRANSDUCER EXCITATION GENERAL LINEAR POWER BOOSTER FOR OP AMPS

V+ TFLAG 1, 12 IN 8 10
(1)

Enable

IFLAG 11 7

OPA567 RELATED PRODUCTS
2, 3 VO FEATURES Same features as the OPA567, plus current monitor output and paralleling ability in SO-20 PowerPADTM package. PRODUCT OPA569

OPA567 9 RSET 6

+IN

4, 5 V

NOTE: (1) Connect for thermal protection.

ISET

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. PowerPAD is a trademark of Texas Instruments. All other trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters.

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