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L4989MD - Low power voltage regulator

Download the L4989MD datasheet PDF. This datasheet also covers the L4989D variant, as both devices belong to the same low power voltage regulator family and are provided as variant models within a single manufacturer datasheet.

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).

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (L4989D-STMicroelectronics.pdf) that lists specifications for multiple related part numbers.

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Other Datasheets by STMicroelectronics

Part Number Description
L4989 LOW POWER VOLTAGE REGULATOR
L4989D Low power voltage regulator
L4981A POWER FACTOR CORRECTOR
L4981B POWER FACTOR CORRECTOR
L4984 CCM PFC controller

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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