MAX26406

PRODUCTION

36V, 4A/5A/6A, Fully-Integrated Synchronous Silent Switcher Buck

Analog Devices MAX26406 Product Info

10 February 2026 3

Features

Silent Switcher Converter
- Enables Compact, Efficient, Low-EMI Solution
- Spread-Spectrum Frequency Modulation
- Symmetrical Package Offers Superior EMI Performance
Multiple Functions for Small Size
- Operating V_IN Range of 3V to 36V
- 10μA Quiescent Current in Skip Mode
- Synchronous DC-DC Converter with IntegratedFETs
- 400kHz and 2.1MHz Fixed-Frequency Options
- Fixed 2.5ms Internal Soft-Start
- Programmable 0.8V to 10V Output, or Fixed-Output Voltages of 3.3V and 5.0V
- Other Fixed-Output Options Available between2.9V to 6V in 100mV Steps
- 3.5mm x 3.75mm, 17-Pin FC2QFN

Dual-Phase Capability
- Can Be Used in Dual-Phase Configuration forHigh-Power Design
- Dynamic Current Sharing through Shared VEA Pin
- Low-IQ Operation Capability in Dual Phase
High Precision
- ±1% Output-Voltage Accuracy in FPWM Mode at No Load
- Precise Output Voltage Monitoring with PGOOD
Robust for the Environment
- Forced-PWM and Skip-Mode Operation
- 99% Duty-Cycle Operation with Low Dropout
- Overtemperature and Short-Circuit Protection
- -40°C to +125°C Operating Temperature Range

Part details & applications

The MAX26404/MAX26405/MAX26406 ICs are tiny, low EMI emission, synchronous Silent Switcher^® buck converters with integrated high-side and low-side switches. The ICs are designed to deliver up to 6A with wide-input voltages range from 3V to 36V. Voltage quality can be monitored by observing the PGOOD signal. The MAX26404/MAX26405/MAX26406 can operate in dropout by running at 99% duty cycle, which makes it ideal for automotive and industrial applications.

The MAX26404/MAX26405/MAX26406 offer programmable or fixed output voltages of 5V and 3.3V. Frequency is internally fixed at 2.1MHz (or 400kHz), which allows for small external components, reduced output ripple, and guarantees no AM interference. The MAX26404/MAX26405/MAX26406 automatically enter skip mode at light loads with ultra-low quiescent current of 10μA at no load. This family of products (including the MAX26408/MAX26410) offers a pin-to-pin compatible offering from 4A to 10A in a single-phase configuration, and up to 20A in a dual-phase configuration. These devices are also optimized for dual-phase operation with very high-current sharing accuracy. These devices can be ordered with spread-spectrum frequency modulation designed to minimize EMI-radiated emissions due to the modulation frequency.

The MAX26404/MAX26405/MAX26406 are available in a small 3.5mm x 3.75mm, 17-pin FC2QFN package and use very few external components.

APPLICATIONS

Point-of-Load Power Supplies
12V/24V Industrial Applications
Telecom, Servers, and Networking Equipment

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