MPL

The EVL2772-C-00A is an evaluation board designed to demonstrate the capabilities of the MP2772, a buck charger that can simultaneously charge a 1-cell battery and power the system’s load. The MP2772 integrates a battery charger, boost converter, and two embedded load switches into a single device.

The MP2772 only requires one inductor to charge the battery or boost the battery voltage to power the device. To extend the battery’s shelf life, the MP2772 achieves a low quiescent current (I_Q) down to 5μA in shipping mode and provides a low I_Q for boost operation under light loads. The integrated analog-to-digital converter (ADC) monitors battery charging parameters and load parameters during boost operation.

The MP2772 provides various safety features for battery charging and system operations, including a charge safety timer, battery/junction temperature monitoring, as well as over-voltage (OV) and over-current (OC) protections. The device asserts an interrupt (INT) signal to the microcontroller unit (MCU) host after encountering a fault condition.

The MP2772’s I²C interface flexibly configures the charging and boosting parameters, such as the input voltage limit, input current limit, charging current, charge-full voltage, boost output voltage, and current limit.

The MP2772 also provides battery MOSFET disable control to enter shipping mode, as well as a system pin reset function via the /DISC pin.

The EVL2772-C-00A supports 5V input sources, including standard USB host ports and wall adapters. The EVL2772-C-00A supports boost output operation by supplying 4V to 6V (100mV/step) with a maximum 1.5A load in On-the-Go (OTG) mode.

The default function of this board is preset for charger mode, and the charge full voltage is preset to 4.2V.

The MP2772 is available in a WLCSP-30 (2.5mmx2.85mm) package.