Allegro UDN2993LB, UDN2993B Datasheet

2993

DUAL H-BRIDGE
MOTOR DRIVERS

UDN2993B

LOAD SUPPLY

ENABLE

PHASE

GROUND

GROUND

OUT

OUT

V

V

BB

1

2

A

3

A

4

5

6

1A

7

2A

8

EA

LOGIC

V

LOGIC

DD

16

15

14

13

12

11

10

9

Dwg. No. A-12,455

LOGIC SUPPLY

ENABLE

B

PHASE

B

GROUND

GROUND

OUT

1B

OUT

2B

V

EB

2993

DUAL H-BRIDGE MOTOR DRIVERS

Cost-effective monolithic drive electronics for bipolar stepper and
dc (brush) servo motors to 30 V and 500 mA is very practical with the
UDN2993B and UDN2993LB. These dual full-bridge motion control
ICs integrate separate inputs, level shifting for upper power outputs,
control logic, integral inductive transient protection, and source (upper)
and sink (lower) drivers in an H-bridge configuration. The single-chip
power IC provides improved space utilization and reliability unmatched
by discrete component circuitry.

Excepting the power supply connections, the two H-bridges are
independent. An ENABLE input is provided for each bridge and
permits pulse-width modulation (PWM) through the use of external
circuitry. PWM drive techniques provide the benefits of reduced power
dissipation, improved motor performance (especially torque), and
positively affect system efficiency. Separate PHASE inputs for each
bridge determine the direction of current flow in the load. Additionally,
each pair of (sink) emitters are terminated to package connections.
This allows the use of current-sensing circuitry. Both devices
incorporate an intrinsic “dead time” to preclude high crossover
(or cross-conduction) currents during changes in direction (phase).

Data Sheet

29319.5A

These devices are packaged in plastic DIPs (suffix B) or surface-

ABSOLUTE MAXIMUM RATINGS

at T

≤ +150°C

J

mountable wide-body SOICs (suffix LB) with copper lead frames for
optimum power dissipation without heat sinks. The lead configurations
allow automatic insertion, fit standard IC sockets or printed wiring

Load Supply Voltage, VBB.................... 30 V

Logic Supply Voltage, VDD................... 7.0 V

Logic Input Voltage Range, V

V

Output Current, I

............... -0.3 V to VDD + 0.3 V

ENABLE

..................... ±600 mA

OUT

PHASE

or

Sink Driver Emitter Voltage,

.................................................. 1.5 V

V

E

Package Power Dissipation,

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

P

D

Operating Temperature Range,

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

T

A

DISCONTINUED PRODUCT

Storage Temperature Range,

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

T

S

IMPORTANT: Load supply voltage must never be
applied without logic supply voltage present.

NOTE: Output current rating may be limited by
chopping frequency, ambient temperature,
airflow, and heat sinking. Under any set of
conditions, do not exceed the specified maximum
current and a junction temperature of +150°C.

— FOR REFERENCE ONLY

board layouts, and enable easy attachment of a heat sink for maximum
power-handling capability. The heat-sink tabs are at ground potential
and require no insulation.

Dual full-bridge drivers with peak current ratings of ±3 A are
supplied as the UDN2998W.

FEATURES

■ ±600 mA Output Current

■ Output Voltage to 30 V

■ Crossover Current Protection

■ TTL/NMOS/CMOS Compatible Inputs

■ Low Input Current

■ Internal Clamp Diodes

■ Automotive Capable

Always order by complete part number:

Part Number Package

UDN2993B 16-Pin DIP
UDN2993LB 20-Lead Wide-Body SOIC

2993

DUAL H-BRIDGE
MOTOR DRIVERS

UDN2993LB

LOAD
SUPPLY

ENABLE

PHASE

GROUND
GROUND
GROUND

GROUND

OUT
OUT

V

V

1

BB

2

A

3

A

4

5

6

7

8

1A

9

2A

10

EA

LOGIC

LOGIC

V

DD

20

19

18

17

16

15

14

13

12

11

LOGIC
SUPPLY

ENABLE
PHASE

GROUND

GROUND
GROUND

GROUND

OUT

1B

OUT

2B

V

EB

FUNCTIONAL BLOCK DIAGRAM

(One of Two Drivers)

V

B

B

ENABLE

PHASE

GROUND

DD

TURN-ON

DELAY

OUT

V

BB

OUT

1

2

TURN-ON

DELAY

V

E

Dwg. No. A-14,340

Dwg. No. A-12,447

TRUTH TABLE

Enable Phase

Input Input Output 1 Output 2

High High Low High
High Low High Low

Low High Low Open
Low Low Open Low

25

V

ENABLE

20

V

PHASE

15

10

SUFFIX 'B', R = 13°C/W

SUFFIX 'LB', R = 6.0°C/W

θJT

θJT

I

+

OUT

_

5

SUFFIX 'B', R = 40°C/W

ALLOWABLE PACKAGE POWER DISSIPATION IN WATTS

SUFFIX 'LB', R = 61°C/W

0

25

θJA

θJA

50 75 100 125 150

TEMPERATURE IN °C

Dwg. GP-021A

t

t

t

f

r

d

t

t

f

d

115 Northeast Cutoff, Box 15036
W

Worcester, Massachusetts 01615-0036 [phone]
Copyright © 1985, 1993, Allegro MicroSystems, Inc.

t

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Dwg. No. A-12,448

2993

DUAL H-BRIDGE
MOTOR DRIVERS

ELECTRICAL CHARACTERISTICS at T

= +25°C, V

A

= 30 V, VDD = 5 V, VE = 0 V, T

BB

≤ +150°C

J

Figure 1 (unless otherwise noted).

Limits

Characteristic Symbol Test Conditions Min. Typ. Max. Units
Output Drivers

Operating Voltage Range V
Output Leakage Current I

Output Saturation Voltage V

Output Sustaining Voltage V
Motor Supply Current I

CE(sus)

BB(ON)

I

BB(OFF)

Source Driver Rise Time t
Source Driver Fall Time t
Clamp Diode Forward Voltage V

Control Logic (PHASE or ENABLE)

Logic Input Current I

I

Logic Input Voltage V

V
Logic Supply Current I
Turn-On Delay Time t
Turn-Off Delay Time t

BB

CEX

CE(SAT)

r

f

F

IN(1)

IN(0)

IN(1)

IN(0)

DD

pd0

pd1

V
V
V
V
I
V
V
I
I

= 0.8 V, V

ENABLE

= 0.8 V, V

ENABLE

= 2.4 V, I

ENABLE

= 2.4 V, I

ENABLE

= ±500 mA, Figure 2, Note 2 30 — — V

OUT

= 2.4 V, Outputs Open, Note 2 — 1.0 3.0 mA

ENABLE

= 0.8 V, Outputs Open, Note 2 — 250 300 µA

ENABLE

= -500 mA — 75 — ns

OUT

= -500 mA — 280 — ns

OUT

= VBB, Note 2 — < 1.0 50 µA

OUT

= 0 V, Note 2 — < -1.0 -50 µA

OUT

= 500 mA — 1.6 1.8 V

OUT

= -500 mA — 1.6 2.0 V

OUT

IF = 500 mA — 1.6 1.8 V

V

PHASE

V

PHASE

or V
or V

= 2.4 V — < 1.0 10 µA

ENABLE

= 0.8 V — -200 -300 µA

ENABLE

ENABLE Input to Source Drivers — 250 — ns
ENABLE lnput to Source Drivers — 500 — ns

10 — 30 V

2.4 — — V
— — 0.8 V
—1420mA

NOTES: 1. Each driver is tested separately.

2. Test is performed with V

3. Negative current is defined as coming out of (sourcing) the specified device pin.

PHASE

= 0.8 V and then repeated for V

PHASE

= 2.4 V.