L4989MD

L4989D L4989MD Low power voltage regulator Features ■ Operating DC supply voltage range 5.6 V to 31 V ■ Very low quiescent current with watchdog disabled ■ Precision output voltage (3%) ■ Low drop voltage (180 mV typ at Io = 150 mA) ■ Reset circuit sensing the output voltage down to 1 V ■ 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) Datasheet  production data SO-8 SO-20 Description The L4989M and L4989MD are monolithic integrated 5 V voltage regulators with a low drop voltage at currents up to 150 mA. The output voltage regulating element consists in a p-channel MOS and the regulation is performed regardless of input voltage transients up to 40 V. The high precision of the output voltage is obtained with a pre-trimmed reference voltage. The devices are protected against short circuit and an overtemperature protection switches off the devices in case of extremely high power dissipation. The L4989M and L4989MD watchdogs are active when the Enable pin is high. Features like reset and watchdog make this devices particularly suitable to supply microprocessor systems in automotive applications. Table 1. Device summary Package SO-8 SO-20 Tube L4989D L4989MD Order codes Tape and reel L4989D013TR L4989MD013TR September 2013 This is information on a product in full production. Doc ID 022376 Rev. 2 ...