L9352_08 datasheet(10/27 Pages) STMICROELECTRONICS

10 / 27 page

Electrical specifications

L9352B

10/27

3.4

Electrical characteristics

Table 6.

Electrical characteristics

(VS = 4.8 to 18V; Tj = -40 to 150°C unless otherwise specified)

Symbol

Parameter

Test condition

Min.

Typ.

Max.

Unit

Power supply

ISON

Supply current

VS ≤ 18V

(outputs ON)

5mA

ISOFF

Quiescent current

VS ≤ 18V

(outputs OFF)

5mA

Icc

Supply current VCC (analog supply)

VCC = 5V

Idd

Supply current VDD (digital supply)

VDD = 5V fCLK=0Hz

μA

Idd

Supply current VDD (digital supply)

VDD = 5V fCLK=250kHz

General diagnostic functions

VQU

Open load voltage

VS ≥ 6.5V

(outputs OFF)

0.3

0.33

0.36

x VQ

VthGND

Signal-GND-loss threshold

VCC = 5V

0.1

VthPGL

Power-GND-loss threshold

VCC = 5V

1.5

2.5

3.5

fCLK,min

Clock frequency error

100

kHz

DCCLKe_low Clock duty cycle error detection low

fCLK = 250 kHz

33,3

DCCLKe_high Clock duty cycle error detection high

fCLK = 250 kHz

66,6

VSloss

Supply detection

VCC = VDD = 5V

4.5

Additional diagnostic functions channel 1 and channel 2 (non regulated channels)

IQU1,2

Open-load current channel 1, 2

VS ≥ 6.5V

300

IQO1,2

Over-load current channel 1, 2

VS ≥ 6.5V

7.5

Additional diagnostic functions channel 3 and channel 4 (regulated channels)

DCOUT

Output duty cycle error

filtered with 10ms

100

IQO3,4

Overload current

channel 3,4

VS ≥ 6.5V

2.5

Vrerr

Recirculation error shutdown

threshold (open D3/D4)

Iout > 50mA

PWMdOUT

Output PWM ratio during drift

comparison

VIN3 = VIN4 = PWMIN

VTEST = H

-14.3

+14.3

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

VIL

Input low voltage

-0.3

VIH

Input high voltage

VIHy

Input voltage hysteresis(1)

500

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