Datasheet > A2917

A2917

更新时间： 2024-11-23 08:30:35

品牌	Logo	应用领域
急速微 - ALLEGRO		驱动器
页数	文件大小	规格书
8页	178K
描述
DUAL FULL-BRIDGE PWM MOTOR DRIVER

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A2917 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 modula-

tion (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 tempera-

ture exceeds safe operating limits.

PWM 2

GND

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 available

for operation from -40°C to +85°C. To order, change the prefix from 'UDN' to

'UDQ'. This device is also available on special order for operation to +125°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

I 1.5 A Continuous Output Current

I 45 V Output Sustaining Voltage

I Internal Clamp Diodes

I Digital Control of Output Current

I Internal Thermal Shutdown Circuitry

I 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

中文翻译

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与A2917相关器件

型号	品牌	获取价格	描述	数据表
A2918	ALLEGRO	获取价格	DUAL FULL-BRIDGE PWM MOTOR DRIVER
A2918EWH	ETC	获取价格	Industrial Control IC
A2918EWV	ETC	获取价格	Industrial Control IC
A2918SWH	ALLEGRO	获取价格	DUAL FULL-BRIDGE PWM MOTOR DRIVER
A2918SWV	ALLEGRO	获取价格	DUAL FULL-BRIDGE PWM MOTOR DRIVER
A2919EB	ETC	获取价格	Industrial Control IC
A2919ELB	ETC	获取价格	Industrial Control IC
A2919ELB-T	ALLEGRO	获取价格	暂无描述
A2919ELBTR-T	ALLEGRO	获取价格	Stepper Motor Controller, 1A, PDSO24, LEAD FREE, BATWING, SOIC-24
A2919SB	ALLEGRO	获取价格	DUAL FULL-BRIDGE PWM MOTOR DRIVER

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