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L4989D Datasheet(PDF) 1 Page - STMicroelectronics |
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L4989D Datasheet(HTML) 1 Page - STMicroelectronics |
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1 / 10 page  1/10 L4989 March 2004 This is preliminary information on a new product now in development. Details are subject to change without notice. ■ 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) ORDERING NUMBERS: L4989D (SO8) L4989 (SO20) SO20 SO8 PRODUCT PREVIEW LOW POWER VOLTAGE REGULATOR BLOCK DIAGRAMt watchdog Vs Vi Wi Vcw Vcr Ctr Ctw Res WE gnd Vo Co Voltage Reference Reset Start up 100mV + _ 1.25V watchdog Vs Vi Wi Vcw Vcr Ctr Ctw Res WE gnd Vo Co Voltage Reference Reset Start up 100mV + _ 1.25V |
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