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L4993D Datasheet(PDF) 1 Page - STMicroelectronics |
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L4993D Datasheet(HTML) 1 Page - STMicroelectronics |
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1 / 30 page  April 2008 Rev 6 1/30 30 L4993 Low drop voltage regulator Features ■ Operating DC supply voltage range 5.6V to 31V ■ Reset circuit sensing the output voltage down to 1V ■ Programmable reset pulse delay with external capacitor ■ Watchdog ■ Programmable watchdog timer with external capacitor ■ Enable input for enabling/disabling the watchdog functionality ■ Thermal shutdown and short circuit protection ■ Wide temperature range (Tj = -40°C to 150°C) Description The L4993 is a monolithic integrated 5V Voltage regulator with a low drop voltage at currents up to 150mA.The output voltage regulating element consists in a p-channel MOS and the regulation is performed regardless of input voltage transients up to 40V. The high precision of the output voltage is obtained with a pre-trimmed reference voltage. The L4993 is protected against short circuit and an over-temperature protection switches off the device in case of extremely high power dissipa- tion. The L4993 watchdog is active when the Enable is high. State of the art features like reset and watchdog make this device particularly suitable to supply microprocessor systems in automotive applications. Max DC supply voltage VS 40V Max output voltage tolerance ∆V0 +/-2% Max dropout voltage Vdp 400 mV Output current I0 150 mA Quiescent current Iqn 79 µA(1) 1. Typical value with watchdog disabled. SO-8 SO-20 Table 1. Device summary Package Order codes Tube Tape & reel SO-8 L4993D L4993DTR SO-20 (16+2+2) L4993MD L4993MDTR www.st.com |
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