Datasheet4U Logo Datasheet4U.com

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

General 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.

Key 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 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

📁 Similar Datasheet

Part Number Description Manufacturer
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

Other Datasheets by Allegro Micro Systems

Part Number Description
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

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.

View original datasheet 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.