L9823(2003) Просмотр технического описания (PDF) - STMicroelectronics

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Компоненты Описание

производитель

L9823
(Rev.:2003)

Octal low-side driver for bulb, resistive and inductive loads with serial input control, output protection and diagnostic

STMicroelectronics 

L9823

APPLICATIONS INFORMATION

The typical application diagram for parallel Input SPI control is shown in Figure 4.

Figure 4. Typical Application Circuit Diagram for the L9823 Circuit.

VDD

VOLTAGE

REGULATOR

VBAT

µP

SFPD

15

CSB

10

SCLK

3

SI

4

SO

9

Reset

22

16 VDD

OL0

Reset

Undervoltage

RESET

Q0

Q0

Q1

Q2 ISCB0

Q3

Q4

Q5 OT0

Q6

Q7 Diag0

Diag0

Diag1 Q1

Diag2

Diag3

Diag4

Diag1

Q2

Diag2

Diag5 Q3

Diag6 Diag3

Diag7 Q4

Diag4

Q5

Diag5

Q6

Reset Diag6

Q7

Diag7

Gate

Control

Over

Temperature

Detect

GND 5 -8

17 - 20

-

+

VDG

=

+

-

-

+

=

OUT0

24

IOL

CH0

CH1

CH2

CH3

CH4

CH5

CH7

CH7

U459

OUT1

23

OUT2

14

OUT3

13

OUT4

12

OUT5

11

OUT6

2

OUT7

1

R, L loads

U459

For higher current driving capability more outputs of the same kind can be paralleled. In this case the maximum

flyback energy should not exceed the limit value for single output.

The immunity of the circuit with respect to the transients at the output is verified during the characterization for

Test Pulses 1, 2 and 3a, 3b, DIN40839 or ISO7637 part 3. The Test Pulses are coupled to the outputs with

200pF series capacitor. The correct function of the circuit with the Test Pulses coupled to the outputs is verified

during the characterization for the typical application with R = 16Ω to 200Ω, L= 0 to 600mH loads. All outputs

withstand testpulses without damage.

10/12

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