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L4989D - Low power voltage regulator

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.

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).

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Datasheet preview – L4989D

Datasheet Details

Part number L4989D
Manufacturer STMicroelectronics
File Size 290.61 KB
Description Low power voltage regulator
Datasheet download datasheet L4989D Datasheet
Additional preview pages of the L4989D datasheet.

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Full PDF Text Transcription

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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.
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