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L5973AD - 2A switch step down switching regulator

General Description

The L5973AD is a step down monolithic power switching regulator with a switch current limit of 2 A so it is able to deliver more than 1.5 A DC current to the load depending on the application conditions.

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

Key Features

  • 2 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.
  • 500 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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L5973AD 2 A switch step down switching regulator Features ■ 2 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 ■ 500 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: chargers, car battery, DC-DC converters Figure 1.