L9347

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Additional Diagnostic Functions channel 3 and channel 4 (regulated channels)

Output duty cycle range

filtered with 10ms

10

90

%

Overload current

channel 3,4

2.5

5

8

A

Recirculation error shutdown

threshold (open D3/D4)

Iout > 50mA

45

50

60

V

T

Output PWM ratio during drift

comparison

-14.3

+14.3

%

Digital Inputs (IN1 to IN4, ENA, CLK, TEST). The valid PWM-Ratio for IN3/IN4 is 10% to 90%

Input low voltage

-0.3

1

V

Input high voltage

2

6

V

20

500

mV

Input pull down current

820

40

Digital Outputs (ST1 to ST4)

0

0.4

V

2.5

3.45

V

23.45

V

0.3

0.64

1.5

k

Ω

1.5

3.2

7.0

k

Ω

Power Outputs (Q1 to Q4)

Q1 and Q2

(non-reg. channels)

(3)

(4)

0.2

0.5

0.5

Ω

Ω

Ω

Q3 and Q4

(reg. channels)

3)

4)

0.35

0.75

0.75

Ω

Ω

Ω

D3, D4 @250mA

0.5

1.5

V

D3, D4 @2.25A

2.0

4.5

V

2A

1

Ω

ELECTRICAL CHARACTERISTCS: (continued)

Symbol

Parameter

Test Condition

Min.

Typ.

Max.

Unit