PIN FUNCTIONS

N

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Name

Functions

1

Dump Protection

With pin 1 connected to pin 14 the device is protected against dump voltage

≤ 60V.

≥ 32V (typ.). If this protection is not used the pin must

be left open

2

Holding Current Control

3

Sensing

Connection for load current sense resistor. Vazlue sets the peak and holding current

4

Ground

Ground Connection. With pins 5, 12 and 13 conducts heat to pc board copper.

5

Ground

See pin 4.

6

Peak Current Timer

A capacitor connected between this pin and ground sets the duration of the high level

7

grounded, the current switchmode control is suppressed.

8

PNP Driving Output

9

Reference Voltage

A resistor connected between this pin and ground sets the internal current reference,

Ω giving Ir = 1mA (typ.).

10

Input

TTL-compatible Input. A high level on this pin activates the output, driving the load.

11

Inhibit

TTL-compatible Inhibit Input. A high level on this input disables the output stages and

logic circutry, irrespective of the state of pin 10.

12, 13

Ground

See Pin 4.

14

Supply Voltage

Supply Voltage Input.

15

NPN Driving Output

16

Internal Clamping

Internal Clamp Zener for Fast Turn-off.

000

L584

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