General Description
The GL4010Y4 is a compact, fully integrated and high efficiency Buck-Boost converter for loading
less than 500mA. It can operate at an input voltage range of 2.7 – 5.5V. And its output voltage
can be programmed through I2C from 1.8V to 5.2V.
GL4010Y4 employs a proprietary 4-cycle control scheme to achieve a high efficiency conversion in all
stages of operation, input voltage is higher, lower or close to output voltage, and keep the transition
between each mode smoothly. It also maintains a low 20uA operation current during zero load.
With a standard I2C interface, one can set the output voltage at any level between 1.8V and 5.2V. In
addition, a VSEL pin with high / low digital input is provided for user to switch output voltage much
faster given the voltage setting stored in the register corresponding to VSEL=1 and 0 respectively.
GL4010Y4 is housed in a DFN2x2-10L package, together with a tiny inductor and 2 capacitors, it
provides an extreme compact solution for a programmable power system.

Features
Input operation range: 2.7 - 5.5V
I2C setting output voltage range: 1.8 - 5.2V
20uA quiescent current in operation
Output current up to 500mA
Efficiency up to 94%
OCP and OTP protection
 DFN2x2-10L package

Application
TWS battery case
Battery case for other portable smart devices
LED flashlight
Power line communication
Sensors
Powering MCU for general purpose
Power supply with envelop tracking