L9349-LF

更新时间： 2024-10-02 11:42:47

品牌	Logo	应用领域
意法半导体 - STMICROELECTRONICS		开关
页数	文件大小	规格书
17页	264K
描述
Quad intelligent power low side switch

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L9349-LF 数据手册

L9349-LF

Quad intelligent power low side switch

■ Four low-side output driver with protection

diagnostics designed as a conventional switch

– 2 channels with 5 A output current

capability and r = 0.2 Ω typ.

– 2 channels with 3 A output current

capability and r = 0.3 Ω typ.

■ Integrated 60 V Zener diodes output clamping

PowerSO-20

structure

■ Output slope control

■ Short circuit protection

The device is equipped with an integrated Zener

diodes clamp for fast inductive load current

recirculation. This structure limits the output

voltage during the recirculation phase to 50V.

■ Open load detection in ON and OFF condition

■ Load bypass detection

■ Overload disable

■ Signal and power ground loss shutdown

■ Selective overtemperature shutdown

■ Electrostatic discharge (ESD) protection

The device is self-protected against short circuit

at the outputs and overtemperature.

For the real time error diagnosis, the voltage and

the current of the outputs are compared with

internally fixed thresholds to recognize open load

in OFF and ON conditions.

Description

The L9349 is a monolithic IC designed to drive

inductive loads in low side configurations like

hydraulic valves used in ABS systems.

The output voltages are also compared with each

other in OFF condition with a fixed offset, in order

to recognize load bypasses.

Particular care has been taken to protect the

device against failures, to avoid electromagnetic

interferences and to offer extensive real time

diagnostics.

If the over load current threshold is exceeded, the

output current will be limited internally during the

diagnostic overload delay switch-off time.

All four channels are monitored with a status

output. The diagnostic output level in connection

with different enable and input conditions allows it

to recognize the different fail states.

The internal pull down current source at the

ENable and INput pins assures, that the device is

switched off, in case of open input conditions.

An output voltage slope limitation is implemented

to reduce the EMI.

Table 1.

Device summary

Order code

Package⁽¹⁾

Packing

L9349-LF

PowerSO-20

Tray

L9349TR-LF

Tape and reel

1. ECOPACK® package (see Section 4: Package information)

September 2008

Rev 5

1/17

www.st.com

12 3 4 5 6 7...17

中文翻译

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L9349-LF 替代型号

型号	品牌	替代类型	描述	数据表
L9349TR-LF	STMICROELECTRONICS	完全替代	Quad intelligent power low side switch

与L9349-LF相关器件

型号	品牌	获取价格	描述	数据表
L9349TR-LF	STMICROELECTRONICS	获取价格	Quad intelligent power low side switch
L-934BC	KINGBRIGHT	获取价格	SINGLE COLOR LED, BLUE, 2.9mm,
L-934BD	KINGBRIGHT	获取价格	SINGLE COLOR LED, BLUE, 2.9mm,
L-934BT	KINGBRIGHT	获取价格	Single Color LED, Blue, Transparent, 2.9mm,
L-934BW	KINGBRIGHT	获取价格	SINGLE COLOR LED, BLUE, 2.9mm,
L-934BW/3GD	KINGBRIGHT	获取价格	Single Color LED Array, Green, T-1, 2.9mm,
L-934BW/3HD	KINGBRIGHT	获取价格	Single Color LED Array, Bright Red, T-1, 2.9mm,
L-934BW/3ID	KINGBRIGHT	获取价格	Single Color LED Array, High Efficiency Red, T-1, 2.9mm,
L-934BW/3YD	KINGBRIGHT	获取价格	Single Color LED Array, Yellow, T-1, 2.9mm,
L-934BY/3ID	KINGBRIGHT	获取价格	Single Color LED Array, High Efficiency Red, T-1, 2.9mm,

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