2543

Features:

 700 mA Output Current per Channel
Low Output-Saturation Voltage
Integral Output Transient-Suppression Diodes
TTL, CMOS, PMOS, NMOS Compatible Inputs
Independent Over-Current Protection for Each Output


Pinout




Specifications

Output Voltage, V_OUT . . . . . . . . . . . . .  60 V
Over-Current Protected Output Voltage,
       V_OUT . . . . . . . . . . . . . . . . . . . . . . . 25 V
Output Current, I_OUT . . . . . . . . . . . . . 1.0 A*
Supply Voltage, V_CC . . . . . . . . . . . . . . .7.0 V
Input Voltage, V_IN or V_EN . . . . . . . . . . . 18 V
Package Power Dissipation,
      P_D . . . . . . . . . . . . . . . . . . . . . See Graph
Operating Temperature Range, T_A
     (UDN2543B/EB) . . . . . . . . -20 to +85
     (UDQ2543B/EB) . . . . . . . . -40 to +85
Storage Temperature Range,
    T_S . . . . . . . . . . . . . . . . . . .-55 to +150


Description

Providing interface between low-level logic and power loads to 100 W, the UDx2543B and UDx2543EB quad power drivers combine AND logic gates and high-current bipolar outputs. Each of the four independent outputs can sink up to 700 mA in the ON state. The outputs have a minimum breakdown voltage (load dump) of 60 V and a sustaining voltage of 35 V. The inputs are compatible with most TTL, DTL, LSTTL, and 5 V CMOS and PMOS logic systems.

Over-current protection has been designed into each channel of theUDx2543B and UDx2543EB and typically occurs at 1 A. It protects any one channel from output short circuits with supply voltages up to 25 V. When the maximum output current is reached, that output stage is driven linearly. If the over-current condition continues, that output's thermal limiting will operate, limiting that output's power dissipation to approximately 2.4 W. The outputs also include diodes for voltage clamping with inductive loads such as relays, solenoids, or dc stepper motors.

UDx2543B and UDx2543EB  are supplied in a 16-pin power DIP of batwing construction (suffix 'B') to provide for maximum package power dissipation. They are also available in a 28-lead PLCC (suffix 'EB') for surface-mount applications. UDx2543B and UDx2543EB  are rated for continuous operation over the temperature range of -20°C to +85°C (UDx2543B and UDx2543EB ) or for use in automotive applications over an extended temperature range as the UDx2543B and UDx2543EB .