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2916 Datasheet(PDF) 1 Page - Allegro MicroSystems

Part No. 2916
Description  DUAL FULL-BRIDGE PWM MOTOR DRIVER
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Manufacturer  ALLEGRO [Allegro MicroSystems]
Direct Link  http://www.allegromicro.com
Logo ALLEGRO - Allegro MicroSystems

2916 Datasheet(HTML) 1 Page - Allegro MicroSystems

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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, UDN2916EB, and UDN2916LB
are available for operation from –20°C to 85°C. The UDQ2916B and
UDQ2916LB are available for operation from –40°C to 105°C. All
packages are lead (Pb) free, 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
UDN2916B (DIP)
1
2
3
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5
6
7
8
9
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
θ
2
θ
1
V
CC
2
V BB
1
GR OUND
GR OUND
GR OUND
GR OUND
02
I
12
I
PHAS E 2
V RE F 2
2
RC
1
RC
V
RE F 1
PHAS E 1
11
I
2B
OUT
SENS E 2
2
E
2A
OUT
1A
OUT
1
E
SENS E 1
1B
OUT
01
I
LOAD
S UPPLY
LOG IC
S UPPLY
Dwg. PP-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.
2916


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