Analog Devices / Maxim Integrated MAX25255 Synchronous Buck Converters

Analog Devices MAX25255 Synchronous Buck Converters are dual buck converters with integrated high-side and low-side switches. These ICs deliver up to 8A per channel with input voltages from 3V to 36V. The devices use only 12μA quiescent current at no load. Voltage quality is monitored by observing the P_GOOD signals. The Analog Devices MAX25255 regulates the output voltage in the dropout region by running at 99% of the duty cycle.

Features

Dual buck converter
- Wide input range from 3.0V to 36V (42V, max)
- Low shutdown supply current (6.5µA, max)
- Low operating quiescent current with one channel ON (12µA, typ)
- Programmable V_OUT from 0.8V to 14V
- Up to 8A per channel
- 180° out-of-phase operation between two converters
- 24ns (typ) minimum on-time
Dual/quad phase operation
- Ability to operate two ICs in parallel for quad-phase operation
- ±10% current sharing accuracy
- Supports up to 16A in dual-phase and 32A in quad-phase

Diagnostics and redundant circuits (MAX25255)
- ASIL B compliant
- Redundant reference
- Die, temperature monitor
- Precision overvoltage and undervoltage protection
General
- 23-Pin, 4.50mm x 5.75mm FC2QFN package
- -40°C to +125°C operating ambient temperature
- AEC-Q100 rating
- 200kHz, 400kHz, 1MHz, or 2MHz switching frequency options
- Spread spectrum

Applications

Front-end power supply for head units
ASIL
General-purpose dual buck converters

Telematics modules
Front camera power

Analog Devices / Maxim Integrated MAX25255 Synchronous Buck Converters

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