Datasheet > UDN2917EBTR

UDN2917EBTR

更新时间： 2024-11-27 23:39:07

品牌	Logo	应用领域
其他 - ETC		电动机控制
页数	文件大小	规格书
8页	138K
描述
Industrial Control IC

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UDN2917EBTR 数据手册

2 917

DUAL FULL-BRIDGE

PWM MOTOR DRIVER

The UDN2917EB motor driver is designed to drive both windings

of a bipolar stepper motor or bidirectionally control two dc motors. Both

bridges are capable of sustaining 45 V and include internal pulse-width

modulation (PWM) control of the output current to 1.5 A.

GND

For PWM current control, the maximum output current is determined

by the user’s selection of a reference voltage and sensing resistor. Two

logic-level inputs select output current limits of 0, 33%, 67%, or 100% of

the maximum level. A PHASE input to each bridge determines load

current direction. Active-low ENABLE inputs control the four drivers in

each bridge.

PWM 1

The bridges include both ground clamp and flyback diodes for

protection against inductive transients. Internally generated delays

prevent cross-over currents when switching current direction. Special

power-up sequencing is not required. Thermal protection circuitry

disables the outputs if the chip temperature exceeds safe operating limits.

PWM 2

GND

Dwg. PP-021

The UDN2917EB is supplied in a 44-lead power PLCC for surface-

mount applications. Its batwing construction provides for maximum

package power dissipation in the smallest possible construction. The

UDN2917EB is provided for operation over an ambient temperature

range of -20°C to +85°C.

Dwg. PP-021

ABSOLUTE MAXIMUM RATINGS

at T_J≤ +150°C

Motor Supply Voltage, V_BB....................45 V

Output Current, I_OUT(t_w≤ 20 µs) ..... ±1.75 A

(Continuous) ............................... ±1.5 A

Logic Supply Voltage, V_CC....................7.0 V

Logic Input Voltage Range,

FEATURES

■ 1.5 A Continuous Output Current

■ 45 V Output Sustaining Voltage

■ Internal Clamp Diodes

■ Digital Control of Output Current

■ Internal Thermal Shutdown Circuitry

■ Similar to Dual PBL3770

V_IN................................ -0.3 V to +7.0 V

Output Emitter Voltage, V_E...................1.0 V

Package Power Dissipation,

P_D......................................... See Graph

Operating Temperature Range,

T_A.................................. -20°C to +85°C

Storage Temperature Range,

T_S................................ -55°C to +150°C

Output current rating may be limited by duty cycle,

ambient temperature, and heat sinking. Under any

set of conditions, do not exceed the specified peak

current rating or a junction temperature of +150°C.

Always order by complete part number: UDN2917EB .

12 3 4 5 6 7 8

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