2916
UDN2916B
(DIP)
OUT
1A
OUT
2A
E
2
S E NS E
2
OUT
2B
G R OUND
G R OUND
I
02
I
12
P HAS E
2
V
REF 2
RC
2
1
2
3
4
5
6
7
8
P WM 1
DUAL FULL-BRIDGE
PWM MOTOR DRIVER
V
BB
LOAD
S UP P LY
E
1
S E NS E
1
OUT
1B
I
01
G R OUND
G R OUND
I
11
P HAS E
1
V
REF 1
RC
1
LOG IC
S UP P LY
24
23
1
2
22
21
20
19
18
17
θ
1
16
15
14
V
CC
13
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.
Data Sheet
29319.20G
9
9
10
11
12
θ
2
P WM 2
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,
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.
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
ALLEGRO [ ALLEGRO MICROSYSTEMS ]
