Analog Devices / Maxim Integrated MAX38889 Reversible Buck/Boost Regulator

Analog Devices Inc. MAX38889 Reversible Buck/Boost Regulator is designed for backup applications. The MAX38889 offers a 2.5V to 5.5V system output voltage range, ±1% threshold accuracy, and 94% peak efficiency in charging or discharging mode. ADI Maxim MAX38889 Reversible Buck/Boost Regulator is housed in a 3mm x 3mm, 16-Pin TQFN package.

Features

2.5V to 5.5V System output voltage range
0.5V to 5.5V Supercapacitor voltage range
±1% Threshold accuracy
2.5% Hysteresis between backup and charging
1A to 3A Peak inductor current limit
- Peak inductor current is pin-programmable over 1A to 3A through external resistor

94% Peak efficiency, charging or discharging mode
4µA Quiescent current in ready state
- After supercapacitor is charged, draws only 4µA of quiescent current
Ready and backup state outputs
- RDY and BKB flags provide real-time status to system
3mm x 3mm, 16-Pin TQFN package

Applications

Handheld industrial equipment
Portable devices/computers with removable battery

Industrial sensor and actuators
Aftermarket automotive tracking

Functional Diagram

Block Diagram - Analog Devices / Maxim Integrated MAX38889 Reversible Buck/Boost Regulator

Application Circuit

Application Circuit Diagram - Analog Devices / Maxim Integrated MAX38889 Reversible Buck/Boost Regulator

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