2916

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


Pinout




Specifications

                   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, VE ..................  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


Description

       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 LB package is available in a lead-free version (100% matte tin leadframe).