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L9651

April 2001

s

s

s

CMOS Compatible Inputs

s

Enable Input (Reset)

s

Outputs Capable of up to 2.2 Amperes

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Outputs Internally Clamped at 70V for Fast

Inductive Load Switch Off

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Wide operating supply voltage from 4.7V up to

30V

DIAGNOSTIC FUNCTIONS

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Open Load Detection (Output off, 100

µs-

filtering time)

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Short to Ground Detection (Output off, 100

µs -

filtering time)

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Short to Battery Detection (Output on)

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Over temperature detection (Output on)

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Storage of last fault in 8 Bit - Serial Register

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Fault Signal Indication at Serial Data Out

without need to read out the Serial Interface

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Daisy Chainable Serial Diagnostic

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Serial Interface Clock Frequency up to 500kHz

DESCRIPTION

The L9651 consists of four identical low side power

switches. A serial diagnostic interface indicates fail-

ground and open load or over temperature).

PowerSO-20

ORDERING NUMBER: L9651

SMART QUAD SWITCH

BLOCK DIAGRAM

Serial Diagnostic

Turn On

Clock

Sync.

Ground

q

Four Fold

Logic

Short Circuit

Protection

q

q

q

q

q

Fault Detection

References

Gate

Control

Data In

Underv. Shutd.