Datasheet > A2916

A2916

更新时间： 2024-11-22 22:38:43

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	312K
描述
DUAL FULL-BRIDGE PWM MOTOR DRIVER

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A2916 数据手册

2916

DUAL FULL-BRIDGE

PWM MOTOR DRIVER

The UDN2916B, UDN2916EB, and UDN2916LB motor drivers are

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 750 mA. The outputs have been opti-

mized for a low output saturation voltage drop (less than 1.8 V

total source plus sink at 500 mA).

For PWM current control, the maximum output current is deter-

mined 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.

UDN2916B (DIP)

LOAD

S UP P LY

OUT

S E NS E

OUT

G R OUND

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.

The UDN2916B is supplied in a 24-pin dual in-line plastic batwing

package with a copper lead-frame and heat sinkable tabs for improved

power dissipation capabilities. The UDN2916EB is supplied in a 44-lead

power PLCC for surface mount applications. The UDN2916LB is

supplied in a 24-lead surface-mountable SOIC. Their batwing construc-

tion provides for maximum package power dissipation in the smallest

possible construction. The UDN2916B/EB/LB are available for opera-

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

'UDQ'. These devices are also available on special order for operation

to +105°C. The B and LB packages are available in a lead (Pb) free

version, with 100% matte tin leadframe.

G R OUND

P HAS E

R E F

R C

R E F

R C

LOG IC

S UP P LY

C C

Dwg. P P -005

ABSOLUTE MAXIMUM RATINGS

at T_J≤ 150°C

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

Output Current, I_OUT

(Peak) ........................................ +1.0 A

(Continuous) .......................... +750 mA

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

Logic Input Voltage Range,

FEATURES

■

750 mA Continuous Output Current

■ 45 V Output Sustaining Voltage

■

Internal Clamp Diodes

Internal PWM Current Control

_IN......................... -0.3 V to V_CC+0.3 V

■ Low Output Saturation Voltage

■ Internal Thermal Shutdown Circuitry

Output Emitter Voltage, V_E.................. 1.5 V

Package Power Dissipation,

■

Similar to Dual PBL3717, UC3770

P_D^{........................................................}See Graph

Operating Temperature Range,

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

Storage Temperature Range,

Always order by complete part number:

Part Number

UDN2916B

Package

24-Pin DIP

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

UDN2916B-T

UDN2916EB

UDN2916LB

24-Pin DIP, Lead-free

44-Lead PLCC

24-Lead SOIC

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.

UDN2916LB-T 24-Lead SOIC, Lead-free

12 3 4 5 6 7 8

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A29160BUV-55F	AMICC	获取价格	2M X 8 Bit / 1M X 16 Bit CMOS 5.0 Volt-only, Boot Sector Flash Memory
A29160BUV-55UF	AMICC	获取价格	2M X 8 Bit / 1M X 16 Bit CMOS 5.0 Volt-only, Boot Sector Flash Memory
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