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OPA567 Datasheet

  • OPA567

  • Rail-to-Rail I/O, 2A POWER AMPLIFIER

  • 520.75KB

  • 23页

  • TI

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OPA567
OP
A56
7
SBOS287A 鈥?JUNE 2005 鈥?REVISED SEPTEMBER 2005
Rail-to-Rail I/O, 2A
POWER AMPLIFIER
FEATURES
q
HIGH OUTPUT CURRENT: 2A
q
OUTPUT SWINGS TO: 150mV of Rails with I
O
= 2A
q
THERMAL PROTECTION
q
ADJUSTABLE CURRENT LIMIT
q
TWO FLAGS: Current Limit and Temperature
Warning
q
LOW SUPPLY VOLTAGE OPERATION: 2.7V to 5.5V
q
SHUTDOWN FUNCTION WITH OUTPUT DISABLE
q
SMALL POWER PACKAGE
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 amplifi-
ers. 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, I
FLAG
, warns of
current limit conditions. T
FLAG
is a thermal flag that warns of
thermal overstress. The T
FLAG
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 character-
istics. It is small and easy to heat sink. The OPA567 is
specified for operation over the industrial temperature range,
鈥?0掳C to +85掳C.
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+ T
FLAG
1, 12
鈥揑N
8
10
(1)
Enable
I
FLAG
11
7
OPA567 RELATED PRODUCTS
2, 3
V
O
FEATURES
Same features as the OPA567, plus current
monitor output and paralleling ability in SO-20
PowerPAD鈩?package.
PRODUCT
OPA569
OPA567
9
R
SET
6
+IN
4, 5
V鈥?/div>
NOTE: (1) Connect
for thermal protection.
I
SET
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.
Copyright 漏 2005, Texas Instruments Incorporated
www.ti.com

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