2879

Size :
Material : Nylon
Mounting Method : Snap In
Color : Black
Type : Bushings


Features:

 Output Currents to 4 A
Output Voltages to 80 V
Loads to 1280 W
TTL, DTL, or CMOS Compatible Inputs
Internal Clamp Diodes
Plastic Single In-Line Package
Heat-Sink Tab


Specifications

at +25°C Free-Air Temperaturefor any driver
(unless otherwise noted)
Output Voltage, V_CEX
        (UDN2878W) . . . . . . . . . . . . . . . .   50 V
        (UDN2879W & UDN2879W-2) . ..    80 V
Output Current, lC
        (UDN2878W & UDN2879W) . . .. .   5.0 A
        (UDN2879W-2) . . . . . . . . . . . . . .   4.0 A
Input Voltage, V_IN . . . . . . . . . . . . . . . .   15 V
Input Current, I_IN . . . . . . . . . . . . . . .   25 mA
Supply Voltage, V_S . . . . . . . . . . . . . .. .   10 V
Total Package Power Dissipation,
        P_D . . . . . . . . . . . . . . . . .  . .   See Graph
Operating Ambient Temperature Range,
       T_A . . . . . . . . . . . . . . .   -20°C to +85°C
Storage Temperature Range,
       T_S . . . . . . . . . . . . . .   -55°C to +150°C


Description

These quad Darlington arrays are designed to serve as interface between low-level logic and peripheral power devices such as sole-noids, motors, incandescent displays, heaters, and similar loads of up to 320 W per channel.  Both 2879 integrated circuits include transient-suppres- sion diodes that enable usewith inductive loads.  The input logic is compatible with most TTL, DTL, LSTTL, and 5 V CMOS logic.

Type UDN2878W and UDN2879W 4 A arrays are identical excep for output-voltage ratings.  The former is rated for operation to 50 V(35 V sustaining), while the latter has a minimum output breakdown rating of 80 V (50 V sustaining).  The lower-cost UDN2879W-2 is recommended for applications requiring load currents of 3 A or less. These less expensive devices are identical to the basic parts except for the maximum allowable load-current rating.

For maximum power-handling capability, all 2879 drivers are supplied in a 12-pin single in-line power-tab package.  The tab needs no insula-tion.  External heat sinks are usually required for proper operation of these devices.