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UC3176_15

更新时间： 2024-11-10 02:58:39

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UC3176_15 数据手册

UC3176

UC3177

Full Bridge Power Amplifier

FEATURES

DESCRIPTION

•

Dual Power Operational Amplifiers

The UC3176/7 family of full bridge power amplifiers is rated for a continu-

ous output current of 2A. Intended for use in demanding servo applications

such as disk head positioning, the onboard current sense amplifier can be

used to obtain precision control of load current, or where voltage mode

drive is required, a standard voltage feedback scheme can be used. Out-

put stage protection includes foldback current limiting and thermal shut-

down, resulting in a very rugged device.

±2A Output Current Guaranteed

Precision Current Sense Amplifier

Two Supply Monitoring Inputs

Parking Function and Under-Voltage

Lockout

Auxiliary functions on this device include a dual input under-voltage com-

parator that can be programmed to respond to low voltage conditions on

two independent supplies. In response to an under-voltage condition the

power Op-Amps are inhibited and a high current, 100mA, open collector

drive output is activated. A separate Park/Inhibit command input.

•

Safe Operating Area Protection

3V to 35V Operation

The devices are operational over a 3V to 35V supply range. Internal un-

der-voltage lockout provides predictable power-up and power-down char-

acteristics.

BLOCK DIAGRAM

10/94

12 3 4 5

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