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Related Links:

Datasheets:
UDx2916: Dual Full-Bridge PWM Motor Driver (PDF)

Selection Guides:
Power Integrated Circuits,

Automotive ICs,

Power Motor Drivers,

Power Motor Drivers - Full-Bridge

when this product is updated

Technical Publications:
UDN2916 Current Ratio / Timing Diagrams (PDF)

UDx2916
Dual Full-Bridge PWM Motor Driver

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

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 of batwing leads. The EB package is a 44-lead power PLCC with 11 internally-fused leads on two sides. Their webbed-lead construction provides for maximum package power dissipation in the smallest possible construction.

The devices are available for operation from –20°C to 85°C (range N), and from –40°C to 105°C (range Q). All packages are lead (Pb) free, with 100% matte tin leadframe plating.

PWM Current Control Circuitry

Complete Part Numbers

Part Number	Package Type	RoHS Compliant	Part Composition/ RoHS Data	Temperature	Comments	Samples	Distributor Stock
UDN2916B	24-pin DIP	No	view data	-20 °C to  85 °C	discontinued	samples not available
UDN2916B-T	24-pin DIP	Yes	view data	-20 °C to  85 °C	new
UDN2916EB	44-lead PLCC	No	view data	-20 °C to  85 °C	discontinued	samples not available
UDN2916EB-T	44-lead PLCC	Yes	view data	-20 °C to  85 °C	new
UDN2916EBTR	44-lead PLCC	No	view data	-20 °C to  85 °C	discontinued	samples not available
UDN2916EBTR-T	44-lead PLCC	Yes	view data	-20 °C to  85 °C	new	samples not available
UDN2916LB	24-lead SOIC	No	view data	-20 °C to  85 °C	discontinued	samples not available
UDN2916LB-T	24-lead SOIC	Yes	view data	-20 °C to  85 °C	new
UDN2916LBTR	24-lead SOIC	No	view data	-20 °C to  85 °C	discontinued	samples not available
UDN2916LBTR-T	24-lead SOIC	Yes	view data	-20 °C to  85 °C	new	samples not available
UDQ2916B	24-pin DIP	No	view data	-40 °C to  105 °C	discontinued	samples not available
UDQ2916EB	44-lead PLCC	No	view data	-40 °C to  105 °C	discontinued	samples not available
UDQ2916EBTR	44-lead PLCC	No	view data	-40 °C to  105 °C	discontinued	samples not available
UDQ2916LB	24-lead SOIC	No	view data	-40 °C to  105 °C	discontinued	samples not available
UDQ2916LB-T	24-lead SOIC	Yes	view data	-40 °C to  105 °C	new
UDQ2916LBTR	24-lead SOIC	No	view data	-40 °C to  105 °C	discontinued	samples not available
UDQ2916LBTR-T	24-lead SOIC	Yes	view data	-40 °C to  105 °C	new	samples not available

Allegro's products are not to be used in life support devices or systems, if a failure of an Allegro product can reasonably be expected to cause the failure of that life support device or system, or to affect the safety or effectiveness of that device or system.