Datasheet > MAX20429

MAX20429

更新时间： 2022-06-24 15:44:05

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描述
Dual 6A High-Efficiency Low Voltage Buck Converter

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MAX20429

Dual 6A High-Efficiency Low Voltage Buck

Converter

General Description

Benefits and Features

The MAX20429 is a high-efficiency dual switching regula-

tor that delivers up to 6A (peak) load current per output

from 0.5V to 1.5875V in 12.5mV steps and 1.6V to 3.8V

in 50mV steps. The IC operates from 3V to 5.5V, making

it ideal for on-board point-of-load and post-regulation ap-

plications. Total output error is less than ±1.0% over load,

line, and temperature.

● High-Feature Set in an Ultra-Small Footprint

• High-Efficiency DC-DC Converter

• Two Independent Outputs, up to 6A per Output

• 3.0V to 5.5V Operating Supply Voltage

• Resistor-Adjustable Output Voltage

• Optional Factory-Preset Output Voltage

• 2.1MHz/3.2MHz Options

• Enable Input

• Individual RESET Outputs

• Spread-Spectrum Option

• Peak Current-Mode Architecture

• 3mm x 3.5mm FCQFN

The MAX20429 features fixed-frequency PWM mode op-

eration with a switching frequency of 2.1MHz or 3.2MHz.

High-frequency operation allows for an all-ceramic capac-

itor design with small external components.

The low-resistance on-chip switches ensure high efficien-

cy at heavy loads while minimizing critical inductances,

making the layout a much simpler task with respect to dis-

crete solutions. Following a simple layout and footprint en-

sures first-pass success in new designs.

● High-Precision

• 108/92% OV/UV Monitor

• ±3% OV/UV Accuracy

• ±1% Output Voltage Accuracy

• Excellent Load-Transient Performance

The device features the MAXQ™ technology, which pro-

vides precision transient performance and phase margin.

This allows obtaining the maximum power, performance,

and precision from the converter over a very wide range of

configurations.

• PWM and SKIP Mode Operation

• MAXQ

Power Architecture

● High Efficiency

• Up to 96% Efficiency 5V to 3.3V

• Up to 90% Efficiency 5V to 1V

The MAX20429 has separate enable inputs and status

outputs for each buck converter. The output voltage is

preset at the factory to allow customers to achieve ±1%

output-voltage accuracy without using expensive 0.1% re-

sistors. The devices offer factory programmable soft-start

and RESET times.

● -40°C to +125°C Operating Temperature Range

● AEC-Q100 Qualified

Ordering Information appears at end of data sheet.

The devices include over-temperature shutdown and over-

current limiting. All devices are designed to operate from

–40 °C to +125 °C ambient temperature range.

Applications

● Secondary Regulator for SoC / MCU Supply

19-100842; Rev 1; 12/20

12 3 4 5 6 7...18

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