Datasheet > UC3175BDWTR

UC3175BDWTR

更新时间： 2024-11-05 23:38:55

品牌	Logo	应用领域
其他 - ETC		驱动器光电二极管电动机控制电机控制器
页数	文件大小	规格书
6页	369K
描述
Servo Motor Controller/Driver

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UC3175BDWTR 数据手册

UC3175B

Full-Bridge Power Amplifier

FEATURES

DESCRIPTION

•

Precision Current Control

This full-bridge power amplifier is rated for continuous output current of 0.8 Am-

peres and is intended for use in demanding servo applications such as head

positioning for high-density disk drives. The device includes a precision current

sense amplifier that provides accurate control of load current. Current is

sensed with a single resistor in series with the load. The power amplifier has a

very low output saturation voltage and will operate down to 4V supply levels.

Power output stage protection includes current limiting and thermal shutdown.

800mA Load Current

1.25V Total VSAT at 800mA

Controlled Velocity Head Parking

Precision Dual Supply Monitor

with Indicator

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

tor, which can monitor two independent supply voltages and force a built-in

head park function when either is below minimum. When activated by either the

UV comparator, or a command at the separate PARK input, the park circuitry

will override the amplifier inputs to convert the power outputs to a programma-

ble constant voltage source which will hold regulation as the supply voltage

falls to below 3.0 Volts. Added features include a POWER OK flag output, a

LIMIT input to force the drive output to its maximum level in either polarity, and

a over-riding INHIBIT input to disable all amplifiers and reduce quiescent sup-

ply current.

•

Limit Input to Force Output

Extremes

•

Inhibit Input and UVLO

4V to 15V operation

This device is packaged in a power PLCC surface mount configuration which

maintains a standard 28-pin outline, but with 7 pins along one edge allocated to

ground for optimum thermal transfer. And is also available in a 24-pin surface

mount SOIC package.

BLOCK DIAGRAM

Note: Pin numbers refer to PLCC package.

UDG-92054-1

10/94

12 3 4 5 6

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