MAX77348

RECOMMENDED FOR NEW DESIGNS

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

Data Sheet (Rev. 0) Product Selection Table
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Overview

  • 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 VOUT
    • Peak Current Limit Level (IPSET1/IPSET2)

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
MAX77348
Ultra-Low IQ, Low-Noise 3.5W Buck-Boost Converter
MAX77348 Simplified Block Diagram MAX77348 Pin Configuration
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Documentation

Data Sheet 1

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Software Resources

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Tools & Simulations

Software Development 1

Evaluation Kits

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MAX77348EVKIT

MAX77348 Evaluation Kit

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Features and Benefits

  • Sense points for high-accuracy measurements
  • Accessible test points for EN, SDA, SCL, INS, and OUTS
  • Output voltage adjustable through software GUI
  • FPWM and default skip mode configurability
  • Active discharge functionality

Product Details

The MAX77348 evaluation kit (EV kit) provides a proven design to evaluate the MAX77348, a 3.5 W buck-boost converter. The IC is capable of 2.3 V to 5.5 V input, and its output voltage is adjustable between 2.5 V to 4.8 V. The factory default output voltage of this EV kit is set at 4.5 V. Output voltage can be adjusted through the software GUI. The EN pin supports hardware or software enabling of the device. The EV kit is compatible with any version of the MAX77348 WLP IC (MAX77348AEWE+ is the default).
MAX77348EVKIT
MAX77348 Evaluation Kit
MAX77348 EV Kit MAX77348 EV Kit - Top View MAX77348 EV Kit - Bottom View MAX77348EVKIT Simplified Block Diagram

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