The MAX77348 is 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. Its low-noise operation makes it optimum to supply power for RF system power, earbud 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.
Key Features and Benefits
- 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)
Applications
- True Wireless Stereo (TWS) Systems
- Narrow Band Internet of Things (NB IoT)
- Portable Audio/Wireless Systems
Evaluation Board
The MAX77348 can be evaluated with the MAX77348EVKIT#.
Block Diagrams and Tables
