MAX77348

RECOMMENDED FOR NEW DESIGNS

Ultra-Low IQ, Low-Noise 3.5W Buck-Boost Converter

Analog Devices MAX77348 Product Info

10 February 2026 10

Features

Input Voltage Range: 2.3V to 5.5V
Output Voltage Range: 2.5V to 4.8V
Ultra-Low, 3.5μA (typ) Quiescent Current
Dynamic Voltage Scaling (DVS)
Optimized Load Regulation Performance
Power Good Interrupt
Output Active Discharge
Low, Continuous Noise Profile
- Eliminates Discontinuities Over Operating Range
- Eliminates Need for Post-Filtering Low Dropout (LDO) in Noise Sensitive Applications

Protection Features
- Undervoltage Lockout (UVLO)
- Thermal Shutdown
- 6.4ms Soft-Start
I²C Interface with Status Interrupts
- Programmable V_OUT
- Peak Current Limit Level (IPSET1/IPSET2)

Part details & applications

The MAX77348 is an ultra-low quiescent current, noninverting buck-boost converter capable of supporting up to 3.5W output power. The device employs a unique control algorithm that seamlessly transitions between the buck, buck-boost, and boost modes, minimizing discontinuities and subharmonics in the output voltage ripple.

The MAX77348 is ideal for a system handling less than 3.5W output power from a single cell Li-Ion battery and requiring high system efficiency with precise voltage control. The MAX77348’s low-noise operation makes it optimum to supply power for RF system power, ear bud applications, and other portable audio systems.

Built-in undervoltage lockout (UVLO), output active discharge, and thermal shutdown protection ensures safe operation under abnormal operating conditions. The MAX77348 is available with a highly configurable I²C serial interface. The device is available in 16-bump, 1.77mm x 2.01mm, 0.4mm pitch WLP package.

APPLICATIONS

True Wireless Stereo (TWS) Systems
Narrow Band Internet of Things (NB IoT)
Portable Audio/Wireless Systems

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