Datasheet4U Logo Datasheet4U.com

A4408 - Adjustable Frequency Buck or Buck-Boost Pre-Regulator

Description

The A4408 is power management IC that uses a buck or buck-boost pre-regulator to efficiently convert automotive battery voltages into a tightly regulated intermediate voltage, complete with control, diagnostics, and protections.

Features

  • Automotive AEC-Q100 qualified.
  • 2.8 to 36 VIN operating range, 40 VIN maximum.
  • Buck or buck-boost pre-regulator (VREG).
  • Adjustable PWM switching frequency: 250 kHz to 2.4 MHz.
  • PWM frequency can be synchronized to external clock.
  • Adjustable synchronous buck regulator (1.25 VNOM).
  • 3.3V (3V3) and 5V (V5) internal LDO regulators with foldback short-circuit protections.
  • 5V (V5P) internal tracking LDO regulator with foldback short.

📥 Download Datasheet

Datasheet preview – A4408

Datasheet Details

Part number A4408
Manufacturer Allegro Micro Systems
File Size 3.29 MB
Description Adjustable Frequency Buck or Buck-Boost Pre-Regulator
Datasheet download datasheet A4408 Datasheet
Additional preview pages of the A4408 datasheet.

📁 Similar Datasheet

  • A4403 - Valley Current Mode Control Buck Converter (Allegro)
  • A44 - NPN Silicon Epitaxial Planar Transistor (GME)
  • A44 - NPN Transistor (KOO CHIN)
  • A44 - HIGH VOLTAGE AMPLIFIER (Elite)
  • A44 - NPN Transistor (SeCoS)
  • A441 - Triode (Philips)
  • A4412 - Buck or Buck/Boost Pre-Regulator (Allegro)
  • A441N - Triode (Philips)
  • A442 - Triode (Philips)
  • A4450 - Buck-Boost Controller (Allegro)
Other Datasheets by Allegro Micro Systems
  • A4401 - Automotive Quasi-Resonant Flyback Controller
  • A4402 - Constant On-Time Buck Converter
  • A4405 - Constant On-Time Buck Regulator
  • A4406 - Constant On-Time Buck Regulator
  • A4407 - 2.2 MHz Constant On-Time Buck Regulator
  • A4409 - Adjustable Frequency Buck or Buck-Boost Pre-Regulator
  • A4410 - Adjustable Frequency Buck or Buck/Boost Pre-Regulator
  • A4411 - Adjustable Frequency Buck or Buck-Boost Pre-Regulator

Full PDF Text Transcription

Click to expand full text
A4408 Adjustable Frequency Buck or Buck-Boost Pre-Regulator with Synchronous Buck, 3 Internal LDOs, Watchdog Timer, NPOR, and FF0/FF1 FEATURES AND BENEFITS • Automotive AEC-Q100 qualified • 2.8 to 36 VIN operating range, 40 VIN maximum • Buck or buck-boost pre-regulator (VREG) • Adjustable PWM switching frequency: 250 kHz to 2.4 MHz • PWM frequency can be synchronized to external clock • Adjustable synchronous buck regulator (1.25 VNOM) • 3.
Published: |