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L5973D - 2.5A switch step down switching regulator

Description

The L5973D is a step down monolithic power switching regulator with a minimum switch current limit of 2.5 A so it is able to deliver more than 2 A DC current to the load depending on the application conditions.

The output voltage can be set from 1.235 V to 35 V.

Features

  • 2.5 A internal switch.
  • Operating input voltage from 4 V to 36 V.
  • 3.3 V / (±2%) reference voltage.
  • Output voltage adjustable from 1.235 V to 35 V.
  • Low dropout operation: 100 % duty cycle.
  • 250 kHz internally fixed frequency.
  • Voltage feedforward.
  • Zero load current operation.
  • Internal current limiting.
  • Inhibit for zero current consumption.
  • Synchronization.
  • Protection against feedback disconnection.
  • Thermal shutdown.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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L5973D 2.5 A switch step down switching regulator Features ■ 2.5 A internal switch ■ Operating input voltage from 4 V to 36 V ■ 3.3 V / (±2%) reference voltage ■ Output voltage adjustable from 1.235 V to 35 V ■ Low dropout operation: 100 % duty cycle ■ 250 kHz internally fixed frequency ■ Voltage feedforward ■ Zero load current operation ■ Internal current limiting ■ Inhibit for zero current consumption ■ Synchronization ■ Protection against feedback disconnection ■ Thermal shutdown Applications ■ Consumer: STB, DVD, TV, VCR, car radio, LCD monitors ■ Networking: XDSL, modems, DC-DC modules ■ Computer: printers, audio/graphic cards, optical storage, hard disk drive ■ Industrial: changers, car battery, DC-DC converters Figure 1.
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