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L9651

September 2013

■ Modified VDMOS Power Stage (UDSBR > 80V)

■ RDSON < 500 mOhm (Tj = 25°C)

■ CMOS Compatible Inputs

■ Enable Input (Reset)

■ Outputs Capable of up to 2.2 Amperes

■ Outputs Internally Clamped at 70V for Fast

Inductive Load Switch Off

■ Wide operating supply voltage from 4.7V up to

30V

■ DIAGNOSTIC FUNCTIONS

■ Open Load Detection (Output off, 100s-

filtering time)

■ Short to Ground Detection (Output off, 100s -

filtering time)

■ Short to Battery Detection (Output on)

■ Over temperature detection (Output on)

■ Storage of last fault in 8 Bit - Serial Register

■ Fault Signal Indication at Serial Data Out

without need to read out the Serial Interface

■ Daisy Chainable Serial Diagnostic

■ Serial Interface Clock Frequency up to 500kHz

DESCRIPTION

The L9651 consists of four identical low side power

switches. A serial diagnostic interface indicates fail-

ure mode of each switch (short circuit to VBAT or

ground and open load or over temperature).

PowerSO-20

ORDERING NUMBER: L9651

SMART QUAD SWITCH

BLOCK DIAGRAM

Serial Diagnostic

Turn On

VBAT

Clock

Sync.

Ground

●

Four Fold

Logic

Short Circuit

Protection

●

●

●

●

●

Fault Detection

References

Gate

Control

Data In

Underv. Shutd.