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.
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.
FEATURES
■ 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, UC3770
Always order by complete part number:
Part Number Package
UDN2916B 24-Pin DIP
UDN2916B-T 24-Pin DIP, Lead-free
UDN2916EB 44-Lead PLCC
UDN2916LB 24-Lead SOIC
UDN2916LB-T 24-Lead SOIC, Lead-free
UDN2916B (DIP)
1
2
3
4
5
6
7
8
9
24
23
22
21
20
19
18
17
16
15
14
1312
11
10 θ
2
θ
1
V
CC
2
V
BB
1
GROUND
GROUND
GROUND
GROUND
02
I
12
I
PHASE
2
V
REF 2
2
RC
1
RC
V
REF 1
PHASE
1
11
I
2B
OUT
SENSE
2
2
E
2A
OUT
1A
OUT
1
E
SENSE
1
1B
OUT
01
I
LOAD
SUPPLY
LOGIC
SUPPLY
Dwg. PP-005
PW
M
1
PW
M
2
Data Sheet29319.20G
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,
V
IN
......................... -0.3 V to V
CC
+0.3 V
Output Emitter Voltage, V
E
.................. 1.5 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.
2916