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December 2002

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VN770K

QUAD SMART POWER SOLID STATE RELAY

FOR COMPLETE H BRIDGE CONFIGURATIONS

(*) Total resistance of one side in bridge configuration

(**) Typical current limitation value

s

SUITED AS LOW VOLTAGE BRIDGE

s

LINEAR CURRENT LIMITATION

s

VERY LOW STAND-BY POWER DISSIPATION

s

SHORT CIRCUIT PROTECTED

s

STATUS FLAG DIAGNOSTIC (OPEN DRAIN)

s

INTEGRATED CLAMPING CIRCUITS

s

UNDERVOLTAGE PROTECTION

s

ESD PROTECTION

DESCRIPTION

The VN770K is a device formed by three

monolithic chips housed in a standard SO-28

package: a double high side and two low side

switches. Both the double high side and low side

VIPower™ M0-3 Technology. This device is

suitable to drive a DC motor in a bridge

configuration as well as to be used as a quad

switch for any low voltage application. The dual

high side switches have built-in thermal shutdown

to protect the chips from overtemperature and

current limiter blocks to protect the device from

short circuit. Status output is provided to indicate

open load in off and on state and overtemperature.

The low side switches are two OMNIFET II types

(fully autoprotected Power MOSFET in VIPower™

technology). They have built-in thermal shutdown,

linear current limitation and overvoltage clamping.

Fault feedback for thermal intervention can be

detected by monitoring the voltage at the input pin.

TYPE

VN770K

220m

Ω (*)

9A (**)

36V

SO-28

PIN FUNCTION

No

NAME

FUNCTION

1, 3, 25, 28

DRAIN 3

Drain of Switch 3 (low-side switch)

2

INPUT 3

Input of Switch 3 (low-side switch)

4, 11

N.C.

Not Connected

5, 10, 19, 24

Drain of Switches 1 and 2 (high-side switches) and Power Supply Voltage

6

GND

Ground of Switches 1 and 2 (high-side switches)

7

INPUT 1

Input of Switch 1 (high-side switches)

8

DIAGNOSTIC

Diagnostic of Switches 1 and 2 (high-side switches)

9

INPUT 2

Input of Switch 2 (high-side switch)

12, 14, 15, 18 DRAIN 4

Drain of switch 4 (low-side switch)

13

INPUT 4

Input of Switch 4 (low-side switch)

16, 17

SOURCE 4

Source of Switch 4 (low-side switch)

20, 21

SOURCE 2

Source of Switch 2 (high-side switch)

22, 23

SOURCE 1

Source of Switch 1 (high-side switch)

26, 27

SOURCE 3

Source of Switch 3 (low-side switch)