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The MAX77827BEFD is a high efficiency boost/buck converter for single-cell Li-Ion powered applications with the industry's lowest typical quiescent current of 6μA. The devices support an input voltage range of 1.8V to 5.5V and an output voltage range of 2.3V to 5.3V. The ICs are available with two different switching currents (1.8A and 3.1A) to optimise external component sizing for a given load current requirement. With the 1.8A switching current limit option, the IC supports up to 1.0A load current in buck mode and 900mA load current in boost mode (VIN = 3.0V, VOUT = 3.3V).

The MAX77827BEFD is available in a 1.61mm x 2.01mm, 12-ball wafer-level package (WLP).

Benefits and Features

1.8V to 5.5V input voltage range

2.3V to 5.3V single resistor adjustable output voltage

1.6A maximum output current (3.1A ILIM option, buck mode)

900mA Maximum Output Current (1.8A ILIM Option, Boost Mode, 3.0VIN, 3.3VOUT)

96% Peak Efficiency (3.3VIN, 3.3VOUT)

Jump pulse mode to maintain high efficiency at light loads

6μA ultra-low typical quiescent current (@ TJ = +25°C)

2.5MHz nominal switching frequency

Enable Pins

GPIO pins for easy system design

FPWM (forced PWM) mode selection pin

POK indicator pin

UVLO, soft-start, active output discharge, over-current and thermal shutdown protection

1.61mm x 2.01mm, 12-ball WLP package

Applications

Single-cell Li+ battery powered devices

Smartphone/portable/wearable devices

Internet of Things (IoT) devices

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