L4947R

更新时间： 2024-11-13 22:47:23

品牌	Logo	应用领域
意法半导体 - STMICROELECTRONICS		稳压器
页数	文件大小	规格书
6页	60K
描述
5V-0.5A VERY LOW DROP REGULATOR WITH RESET

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数据手册
替代型号

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L4947R 数据手册

L4947

L4947R

5V-0.5A VERY LOW DROP REGULATOR WITH RESET

PRECISE OUTPUT VOLTAGE (5V ± 4%)

OVER FULL TEMPERATURE RANGE

(– 40 / 125 C)

VERY LOW VOLTAGE DROP (0.75Vmax)

OVER FULL T RANGE

OUTPUT CURRENT UP TO 500mA

RESET FUNCTION

POWER-ON RESET DELAY PULSE DE-

FINED BY THE EXTERNAL CAPACITOR

+ 80V LOAD DUMP PROTECTION

– 80V LOAD DUMP PROTECTION

REVERSE VOLTAGEPROTECTION

SHORT CIRCUIT PROTECTION AND THER-

MAL SHUT-DOWN (with hysteresis)

LOW START UP CURRENT

Pentawatt

ORDERING NUMBERS:

L4947

L4947R

could fall as low as 6V. Furthermore, it incorpo-

rates a complete range of protection circuits

against the dangerous overvoltages always pre-

sent on the battery rail of the car. The reset func-

tion makes the device particularly suited to supply

microprocessor based systems : a signal is avail-

able (after an externally programmable delay) to

reset the microprocessor at power-on phase ; at

power-off, this signal becomes low inhibiting the

microprocessor.

DESCRIPTION

The L4947/L4947R is a monolithic integrated cir-

cuit in Pentawatt package specially designed to

provide a stabilized supply voltage for automotive

and industrial electronic systems. Thanks to its

very low voltage drop, in automotive applications

the L4947/L4947Rcan work correctly even during

the cranking phase, when the battery voltage

BLOCK DIAGRAM

This is advanced information on a new product now in development or undergoing evaluation. Details are subject to change without notice.

June 2000

1/6

12 3 4 5 6

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L4947R 替代型号

型号	品牌	替代类型	描述	数据表
L4947	STMICROELECTRONICS	完全替代	5V-0.5A VERY LOW DROP REGULATOR WITH RESET

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L4949DN	STMICROELECTRONICS	获取价格	5V FIXED POSITIVE LDO REGULATOR, 0.5V DROPOUT, PDSO8, SO-8
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