Top

Dual 6A High-Efficiency Low Voltage Buck Converter

Highest Efficiency and Smallest Dual 6A Low-Voltage Buck Converter

Product Details

Parametric specs for Step-Down Switching Regulators
VIN (V) (min) 3
VIN (V) (max) 5.5
VOUT1 (V) (min) 0.5
VOUT1 (V) (max) 1.5875
IOUT1 (A) (max) 6
Switch Type Internal
Preset VOUT (V) 0.5 to 1.5875
Output Adjust. Method Preset
Synchronous Switching? Yes
Power Good Signal Yes
ICC (mA) (typ) 0.44
# DC-DC Outputs 2
Switching Frequency (kHz) 2100
Design Tools EE-Sim
Package/Pins FC2QFN/18
Budgetary
Price (See Notes)
1.27
View More

Simplified Block Diagram

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .

Parameters

Parametric specs for Step-Down Switching Regulators
VIN (V) (min) 3
VIN (V) (max) 5.5
VOUT1 (V) (min) 0.5
VOUT1 (V) (max) 1.5875
IOUT1 (A) (max) 6
Switch Type Internal
Preset VOUT (V) 0.5 to 1.5875
Output Adjust. Method Preset
Synchronous Switching? Yes
Power Good Signal Yes
ICC (mA) (typ) 0.44
# DC-DC Outputs 2
Switching Frequency (kHz) 2100
Design Tools generateDesignEESIMUrl('http://maxim.transim.com/pwm2/designreq/Index?partId=25895', '')
Package/Pins FC2QFN/18
Budgetary
Price (See Notes)
1.27

Key Features

  • 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 Active-Low RESET Outputs
    • Spread-Spectrum Option
    • Peak Current-Mode Architecture
    • 3mm x 3.5mm FCQFN
  • High-Precision
    • 108/92% OV/UV Monitor
    • ±3% OV/UV Accuracy
    • ±1% Output Voltage Accuracy
    • Excellent Load-Transient Performance
    • PWM and SKIP Mode Operation
    • MAXQTM Power Architecture
  • High Efficiency
    • Up to 96% Efficiency 5V to 3.3V
    • Up to 90% Efficiency 5V to 1V
  • -40°C to +125°C Operating Temperature Range
  • AEC-Q100 Qualified

Applications/Uses

  • Secondary Regulator for SoC / MCU Supply

Description

The MAX20429 is a high-efficiency dual switching regulator 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 applications. Total output error is less than ±1.0% over load, line, and temperature.

The MAX20429 features fixed-frequency PWM mode operation with a switching frequency of 2.1MHz or 3.2MHz. High-frequency operation allows for an all-ceramic capacitor design with small external components.

The low-resistance on-chip switches ensure high efficiency at heavy loads while minimizing critical inductances, making the layout a much simpler task with respect to discrete solutions. Following a simple layout and footprint ensures first-pass success in new designs.

The device features the MAXQ™ technology, which provides 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.

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% resistors. The devices offer factory programmable soft-start and active-low RESET times.

The devices include over-temperature shutdown and overcurrent limiting. All devices are designed to operate from –40°C to +125°C ambient temperature range.

Simplified Block Diagram

MAX20429: Simplified Block Diagram MAX20429: Simplified Block Diagram Zoom icon

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .