Analog Devices / Maxim Integrated MAX77831 High-Efficiency Buck-Boost Converter

Analog Devices MAX77831 High-Efficiency Buck-Boost Converter is designed for systems requiring a wide input voltage range (2.5V to 16V). The MAX77831 supplies 18W of continuous output power, for example, up to 2A at 9V (VIN ≥ 4V). The MAX77831 Converter has a 5V default output voltage when using internal feedback resistors. The Converter can also be configured to any default output voltages between 3V and 15V when using external feedback resistors. The IC only operates in forced-PWM (FPWM) mode.

The Analog Devices MAX77831 Buck-Boost Converter offers an SEL pin enabling a single external resistor to program four different I²C interface slave addresses, four different switching-current limit thresholds, and selection between external/internal feedback resistors. External feedback resistors allow for a wider output voltage range and customizable output voltages at startup.

The Converter is ideal for non-battery powered applications up to 16V input and battery-powered applications up to 16V input with EN control. The MAX77831 is available in a 2.86mm x 2.06mm 35-bump wafer-level package (WLP).

Features

2.5V to 16V Wide input voltage range
Default output voltage
- 5V with internal feedback resistors
- 3V to 15V with external feedback resistors
Default 1.8MHz switching frequency
- 1.5MHz and 1.2MHz Selectable through the I²C interface
Forced-PWM (FPWM) mode operation only
I²C-Programmable output voltage after startup
- 4.5V to 15V (Internal feedback resistors)
- 3V to 15V (External feedback resistors
18W of Continuous output power (V_IN ≥ 4V, V_OUT ≥5V)
R_SEL Configuration
- I²C Interface slave address
- Switching current limit threshold
- Internal/external feedback resistors

I²C Programming
- Output voltage (DVS)
- Slew rate of output voltage change
- Switching current limit threshold
- Switching frequency
- Power-OK (POK) status and fault interrupt masks
- Internal compensation
Soft-start
Output active discharge
Open-drain power-OK (POK) monitor/fault condition interrupt
Protection features
- Undervoltage lockout (UVLO)
- Overcurrent protection (OCP)
- Overvoltage protection (OVP)
- Thermal shutdown (THS)
High density interconnect (HDI) PCB not required
Available in 2.86mm x 2.06mm 35 WLP

Applications

Non-battery powered applications up to 16V input
Battery powered applications up to 16V input with EN control

Analog Devices / Maxim Integrated MAX77831 High-Efficiency Buck-Boost Converter

Features

Applications

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