L4989, L4989D, L4989MD

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L4989
LOW POWER VOLTAGE REGULATOR
PRODUCT PREVIEW

OPERATING DC SUPPLY VOLTAGE RANGE 5.6V TO 31V VERY LOW QUIESCENT CURRENT WITH WATCHDOG DISABLED PRECISION OUTPUT VOLTAGE (3%) LOW-DROP VOLTAGE (180mV typ at Io = 150mA) RESET CIRCUIT SENSING THE OUTPUT VOLTAGE DOWN TO 1V PROGRAMMABLE RESET DELAY WITH EXTERNAL CAPACITOR WATCHDOG DISABLE INPUT PROGRAMMABLE WATCHDOG TIMER WITH EXTERNAL CAPACITOR THERMAL SHUTDOWN AND SHORT CIRCUIT PROTECTION WIDE TEMPERATURE RANGE (Tj = -40 C TO 150 C)

SO8

SO20

ORDERING NUMBERS: L4989D (SO8) L4989 (SO20)

BLOCK DIAGRAMt

Vs Vi

Vo Co Start up
1.25V

Voltage Reference Wi Vcw Ctw WE watchdog

gnd
100mV

+ _

Res

Vcr Ctr

Reset

March 2004
This is preliminary information on a new product now in development. Details are subject to change without notice.

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L4989 DATASHEET