PINS

NAME

FUNCTIONS

Power Supply Voltage Input

2

HSD 1

High Side CH 3 Power Output

3

SMPS OUT

Output of Switchmode Power Supply

4

HSD 1

High Side CH 1 Power Output

5

HSD 2

High Side CH 1 Power Output

6, 7,17,29,

39, 40

GND

Common Grounded Terminal

8

LSD 1A

Low Side CH 1 Power Output

9

LSD 2A

Low Side CH 1 Power Output

10

SENSE 1

A Resistor Rsense, connected to this pin allows load current control for CH 1

11

LSD 1B

Low Side CH 1 Power Output

12

LSD 2B

Low Side CH 1 Power Output

13

Input Voltage for the HSD Gates Drive

14

Logic Supply Voltage Input

15

Comp.

An RC series network allows the compensation of the SMPS regulation loop

16

RES OUT

18

19

minimum ON time in the PWM current control loop

20

21

By-pass Capacitor of the LSD Gates Voltage drive

22

If no watchdog signal is generated into the TWD time the device is automatically

switched off.

23

CS

Enable Input (active when low)

24

WR

Write Input. When WR is low the data is loaded into the

µP interface

25

A0

Operation Selection (see programming sequence).

26

A1

Operation Selection (see programming sequence).

27

A2

Channel Selection (see programming sequence).

28

A3

Channel Selection (see programming sequence).

30

D0

Data (see programming sequence).

31

D1

Data (see programming sequence).

32

D2

Data (see programming sequence).

33

D3

Data (see programming sequence).

34

LSD 2B

Low Side CH 2 Power Output

35

LSD 1B

Low Side CH 2 Power Output

36

SENSE 2

37

LSD 2A

Low Side CH 2 Power Output

38

LSD 1A

Low Side CH 2 Power Output

41

HSD 2

High Side CH 2 Power Output

42

HSD 1

High Side CH 2 Power Output

43

SENSE 3

44

LSD 1

Low Side CH 3 Power Output

PIN DESCRIPTION

L6280

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