L4988D STMicroelectronics

L4988 Automotive low drop voltage regulator Datasheet - production data Programmable watchdog timer with external capacitor Enable input for enabling/disabling the watchdog functionality Thermal shutdown and short circuit protection * 3*&)7 Wide temperature range (Tj = -40C to 150C) * 3*&)7 SO-8 SO-20 Description The L4988 is a monolithic integrated 5V voltage Features regulator with a low drop voltage at currents up to 200mA. The output voltage regulating element consists in a p-channel MOS and the regulation is Max DC supply voltage V 40V S performed regardless of input voltage transients Max output voltage tolerance Vo +/-2% up to 40V. The high precision of the output Max dropout voltage V 500 mV dp voltage is obtained with a pre-trimmed reference Output current I 200 mA voltage. The L4988 is protected against short o (1) circuit and an over-temperature protection Quiescent current I 75 A qn switches off the device in case of extremely high 1. Typical value with watchdog disabled. power dissipation. The L4988 is active when the Enable is high. State of the art features like reset AEC-Q100 qualified and watchdog make this device particularly Operating DC supply voltage suitable to supply microprocessor systems in range 5.6 V to 31 V automotive applications. Reset circuit sensing the output voltage down to 1V Programmable reset pulse delay with external capacitor Watchdog Table 1. Device summary Order codes Package Tube Tape & reel SO8 L4988D L4988DTR SO20 (16+2+2) L4988MD September 2018 DS5334 Rev 8 1/32 This is information on a product in full production. www.st.comContents L4988 Contents 1 Block diagram and pin configuration . 5 2 Electrical specifications 7 2.1 Absolute maximum ratings . 7 2.2 Thermal data . 7 2.3 Electrical characteristics . 8 2.4 Electrical characteristics curves .11 2.5 Test circuit and waveforms plot 14 2.5.1 Load regulation . 14 3 Application information . 16 3.1 Voltage regulator . 16 3.2 Reset 17 3.3 Watchdog . 18 4 Package and PCB thermal data . 19 4.1 SO-8 thermal data 19 4.2 SO-20 thermal data . 22 5 Package and packing information . 25 5.1 ECOPACK packages . 25 5.2 SO-8 package information 25 5.3 SO-20 package information . 27 5.4 SO-8 packing information . 28 5.5 SO-20 packing information 30 6 Revision history . 31 2/32 DS5334 Rev 8