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Allegro - DUAL FULL-BRIDGE PWM MOTOR DRIVER

Numéro de référence UDN2916
Description DUAL FULL-BRIDGE PWM MOTOR DRIVER
Fabricant Allegro 
Logo Allegro 





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UDN2916 fiche technique
2916
UDN2916B
OUT 1A
OUT 2A
E2
SENSE 2
OUT 2B
GROUND
1
2
3
4
5
6
2
GROUND 7
I 02
I 12
PHASE 2
8
99
10 θ2
V REF 2 11
RC 2 12
VBB
24
LOAD
SUPPLY
23 E 1
1
22 SENSE 1
21 OUT 1B
20 I 01
19 GROUND
18 GROUND
17 I 11
θ1 16 PHASE 1
15 V REF 1
14
VCC 13
RC 1
LOGIC
SUPPLY
Dwg. PP-005
ABSOLUTE MAXIMUM RATINGS
at TJ 150°C
Motor Supply Voltage, VBB .................... 45 V
Output Current, IOUT
(Peak) ........................................ +1.0 A
(Continuous) .......................... +750 mA
Logic Supply Voltage, VCC ................... 7.0 V
Logic Input Voltage Range,
VIN ............................... -0.3 V to +7.0 V
Output Emitter Voltage, VE ................... 1.5 V
Package Power Dissipation,
PD ........................................................ See Graph
Operating Temperature Range,
TA ................................. -20°C to +85°C
Storage Temperature Range,
TS ............................... -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.
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
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 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 con-
struction provides for maximum package power dissipation in the
smallest possible construction. The UDN2916B/EB/LB are available for
operation from -40°C to +85°C. To order, change the prefix from 'UDN'
to 'UDQ'. These devices are also available on special order for opera-
tion to +105°C.
FEATURES
I 750 mA Continuous Output Current
I 45 V Output Sustaining Voltage
I Internal Clamp Diodes
I Internal PWM Current Control
I Low Output Saturation Voltage
I Internal Thermal Shutdown Circuitry
I Similar to Dual PBL3717, UC3770
Always order by complete part number:
Part Number Package
UDN2916B
24-Pin DIP
UDN2916EB 44-Lead PLCC
UDN2916LB 24-Lead SOIC

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