UDN2916LBTR-T Allegro Microsystems Inc, UDN2916LBTR-T Datasheet - Page 2

• Manufacturer Part Number: UDN2916LBTR-T
• Description: IC MOTOR DRIVER PWM DUAL 24SOIC
• Manufacturer: Allegro Microsystems Inc

Specifications of UDN2916LBTR-T

• Applications: DC Motor Driver, Stepper Motor Driver
• Number Of Outputs: 2/1
• Current - Output: ±750mA
• Voltage - Load: 10 V ~ 45 V
• Voltage - Supply: 4.75 V ~ 5.25 V
• Operating Temperature: -20°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 24-SOIC (7.5mm Width)
• Motor Type: Full Bridge
• No. Of Outputs: 2
• Output Current: 750mA
• Output Voltage: 45V
• Supply Voltage Range: 4.75V To 5.25V
• Driver Case Style: SOIC
• No. Of Pins: 24
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 620-1156-2; UDN2916LBTR-T

Features and Benefits
▪ 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 or UC3770
Packages
29319.20R
with internally-fused leads
Package EB 44-pin PLCC
Package B 24-pin
Package LB 24-pin
Batwing SOICW
Batwing DIP
I
I
'B' PACKAGE,
CHANNEL 1
PIN NUMBERS
SHOWN.
0
1
20
17
Not to scale
40 k
V
REF
15
20 k
PWM Current-Control Circuitry
10 k
Dual Full-Bridge PWM Motor Driver
10
OUT A
1
R
S
V
24
23
BB
E
OUT B
R C
Description
The UDx2916 motor drivers 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 optimized
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
determined by user 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 crossover 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 device is supplied in a 24-pin dual in-line plastic (DIP,
package B) with two pairs of batwing leads as heat-sinkable
tabs for enhanced power dissipation capabilities. The LB
package is a 24-lead surface-mount wide SOIC with two pairs
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21
SENSE
22
C
–
+
C
R
T
SHOT
ONE
14
RC
C
T
Dwg. EP-007B
SOURCE
DISABLE
2916