UDQ2916 Allegro MicroSystems, Inc., UDQ2916 Datasheet

UDQ2916

Manufacturer Part Number

UDQ2916

Description

Udn2916 Udq2916 Dual Full-bridge Pwm Motor Driver

Manufacturer

Allegro MicroSystems, Inc.

Datasheet

1.UDQ2916.pdf (9 pages)

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Current page: 1 of 9
Download datasheet (466Kb)

Features and Benefits

▪ 750 mA continuous output current

▪ 45 V output sustaining voltage

▪ Internal clamp diodes

▪ Internal PWM current control

▪ Low output saturation voltage

▪ Internal thermal shutdown circuitry

▪ Similar to dual PBL3717 or UC3770

Packages

29319.20N

with internally-fused leads

Package EB 44-pin PLCC

Package B 24-pin

Package LB 24-pin

Batwing SOICW

Batwing DIP

'B' PACKAGE,

CHANNEL 1

PIN NUMBERS

SHOWN.

Not to scale

40 k

REF

20 k

PWM Current-Control Circuitry

10 k

Dual Full-Bridge PWM Motor Driver

OUT A

OUT B

R C

Description

The UDx2916 motor drivers 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 optimized

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

determined by user 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.

The bridges include both ground-clamp and flyback diodes for

protection against inductive transients. Internally generated

delays prevent crossover 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 device is supplied in a 24-pin dual in-line plastic (DIP,

package B) with two pairs of batwing leads as heat-sinkable

tabs for enhanced power dissipation capabilities. The LB

package is a 24-lead surface-mount wide SOIC with two pairs

Continued on the next page…

SENSE

–

SHOT

ONE

Dwg. EP-007B

SOURCE

DISABLE

2916

Related parts for UDQ2916

UDQ2916 Summary of contents

Page 1

Features and Benefits ▪ 750 mA continuous output current ▪ output sustaining voltage ▪ Internal clamp diodes ▪ Internal PWM current control ▪ Low output saturation voltage ▪ Internal thermal shutdown circuitry ▪ Similar to dual PBL3717 or ...

Page 2

... UDN2916LBTR-T 24-pin batwing SOICW UDQ2916EB-T 44-pin internally fused lead PLCC UDQ2916EBTR-T 44-pin internally fused lead PLCC UDQ2916LB-T 24-pin batwing SOICW UDQ2916LBTR-T 24-pin batwing SOICW Absolute Maximum Ratings Characteristic Motor Supply Voltage Logic Supply Voltage Input Voltage Output Emitter Voltage Output Current* ...

Page 3

... V P HAS LOG Dwg -005 Allegro MicroSystems, Inc. 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853- 5000 www.allegromicro.com 150 Dwg. GP-035B ...

Page 4

... Allegro MicroSystems, Inc. 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853- 5000 www.allegromicro.com Max. Units μA –50 μA — V 0.6 V 1.2 V 1 μA 2 ...

Page 5

... off Dwg. WM-003-1A LOAD CURRENT PATHS IDG OUR ALL OF F Dwg -006-1 Allegro MicroSystems, Inc. 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853- 5000 www.allegromicro.com 5 ...

Page 6

... TRUTH TABLE PHASE OUT OUT Allegro MicroSystems, Inc. 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853- 5000 www.allegromicro.com , pro- REF ...

Page 7

... F θJT t should be chosen in the range μs. OFF . The value for R is approximately LOAD θJT , switching losses decrease, low- OFF Allegro MicroSystems, Inc. 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853- 5000 www.allegromicro.com 7 ...

Page 8

... Dimensions exclusive of mold flash, gate burrs, and dambar protrusions Exact case and lead configuration at supplier discretion within limits shown A Terminal #1 mark area 4º 0.27 0.84 0.25 C SEATING PLANE GAUGE PLANE Allegro MicroSystems, Inc. 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853- 5000 www.allegromicro.com 8 ...

Page 9

... The in for ma tion in clud ed herein is believed rate and reliable. How ev er, Allegro MicroSystems, Inc. assumes no re spon si bil i ty for its use; nor for any in fringe ment of patents or other rights of third parties which may result from its use. ...

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