UDQ2943Z Allegro MicroSystems, Inc., UDQ2943Z Datasheet

UDQ2943Z

Manufacturer Part Number

UDQ2943Z

Description

High-current Half-bridge Motor Driver

Manufacturer

Allegro MicroSystems, Inc.

Datasheet

1.UDQ2943Z.pdf (6 pages)

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2943

HIGH-CURRENT HALF-BRIDGE MOTOR DRIVER

Supply Voltage, Range V

Output Voltage, V

Input Voltage Range, V

Continuous Output Current, I

Package Power Dissipation,

Operating Temperature Range,

Storage Temperature Range,

*Internal high-voltage shutdown above 24 V.

ABSOLUTE MAXIMUM RATINGS

................................. -20 C to +85 C

............................... -55 C to +150 C

....................................... See Graph

CE(sus)

....................... 24 V

.... -0.3 V to +18 V

.... 8.5 V to 35 V*

OUT

Dwg. PP-022-1

...... 1.0 A

2943

UDN2943Z half-bridge driver combines high-current sink and source

drivers with logic stages, level shifting, diode transient protection, and

a voltage regulator for single-supply operation. Capable of operating

in extremely harsh environments, this device can withstand high

ambient temperatures, output overloads, and repeated power supply

transient voltages without damage. The driver can be used in pairs for

full-bridge operation, or as triplets in three-phase brushless dc motor-

drive applications.

and NMOS logic. Logic lockout prevents both source and sink drivers

from turning ON simultaneously. Each driver is turned ON by an active-

low input, making the UDN2943Z especially desirable in many micro-

processor applications. An accidental input open circuit will turn OFF

the corresponding output. The device also provides an internally-

generated dead time to prevent crossover currents during output

switching. Monolithic, space-saving construction offers reliability

unobtainable with discrete components.

maximum rated current. Internal short-circuit protection, activated at

load currents above 1 A, protects the source driver from accidental

short-circuits between the output and ground.

inductive loads at supply voltages of up to 24 V. With supply voltage

transients (to 35 V maximum), a high-voltage protection circuit

becomes operative, shutting OFF both output drivers. The internal

thermal shutdown is triggered by a nominal junction temperature

of 160 C.

package provide cost-effective and reliable systems designs.

It also features excellent power dissipation ratings, minimum size, and

ease of installation. The heat-sink tab is at ground potential and does

not require insulation.

FEATURES

Always order by complete part number: UDQ2943Z .

HALF-BRIDGE MOTOR DRIVER

Saturated Output Drivers

Logic-Compatible Inputs

Output-Transient Protection

Tri-State Output

A A

1 A Output Current

Designed for use as a general-purpose motor driver, the

The input circuitry is compatible with TTL, low-voltage CMOS,

Saturated output drivers provide for low saturation voltage at the

The UDN2943Z driver is rated for continuous operation with

Single-chip construction and a 5-lead power-tab TS-001 plastic

MicroSystems, Inc.

HIGH-CURRENT

8.5 V to 24 V Operating Range

Crossover-Current Protected

Withstands 35 V Supply Transients

Internal Over-Voltage Protection

Internal Short-Circuit Protection

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UDQ2943Z Summary of contents

Page 1

... The heat-sink tab is at ground potential and does not require insulation. FEATURES 1 A Output Current Saturated Output Drivers Logic-Compatible Inputs Output-Transient Protection Tri-State Output Always order by complete part number: UDQ2943Z . MicroSystems, Inc. 8 Operating Range Crossover-Current Protected Withstands 35 V Supply Transients ...

Page 2

... TSD 2 3.0 C/W JT 125 150 Dwg. GP-014A 115 Northeast Cutoff, Box 15036 TM TM Worcester, Massachusetts 01615-0036 (508) 853-5000 115 Northeast Cutoff, Box 15036 Copyright © 1986, 1994, Allegro MicroSystems, Inc. Worcester, Massachusetts 01615-0036 (508) 853-5000 HIGH-CURRENT SENSE L-TO-H DELAY 4 OUTPUT H-TO-L DELAY 3 GROUND Dwg ...

Page 3

HIGH-CURRENT HALF-BRIDGE MOTOR DRIVER ELECTRICAL CHARACTERISTICS at T Characteristic Output Leakage Current ( Output Sustaining Voltage Output Saturation Voltage Short-Circuit Source Current Logic Input Voltage Input Current Clamp Diode Forward Voltage Logic Supply Current Thermal ...

Page 4

HIGH-CURRENT HALF-BRIDGE MOTOR DRIVER 2 OUT Dwg. EP-053 Figure 2 OUT Dwg. EP-056 Figure ...

Page 5

HIGH-CURRENT HALF-BRIDGE MOTOR DRIVER Dimensions in Inches 0.415 0.156 0.390 0.139 0.625 0.539 0.570 0.465 1 5 1.045 0.945 0.040 0.020 0.067 BSC 0.190 0.165 O 0.055 0.035 13.69 11.81 0.370 0.330 26.54 24.00 0.025 1.01 0.012 0.51 0.115 ...

Page 6

... Complete part number includes additional characters to indicate operating temperature range and package style. Allegro MicroSystems, Inc. reserves the right to make, from time to time, such departures from the detail specifications as may be required to permit improvements in the design of its products. Components made under military approvals will be in accordance with the approval requirements ...

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