BENEFITS and FEATURES

? Buck-Boost Converter with 4 Integrated Switches

? Wide VIN Range: 3.9V to 23V (No Dead Zone)

? Wide VOUT Range: 3.0V to 23V

? Supports QC3.0 / USB PD + PPS output levels and

transition times

? Programmable Frequency: 125KHz, 250KHz,

500kHz, and 1MHz

? 2V ~ 5.1V/100mA Programmable Output LDO

? Precision 0.5% Voltage Reference

? +/-4% Output Constant Current Regulation

? Programmable Output Voltage and Currents via

both IC pins and I2C

? Programmable Soft-Start

? Programmable Safety Timer

? Cycle-by-Cycle Current Limit

? Built in ADC for Temperature, Input and Output Voltage

and Current monitoring

? Thermal Regulation and Protection

? 25mΩ FET from VIN to SW1

? 25mΩ FET from SW2 to VOUT

? 35mΩ FET from SW1 to PGND

? 35mΩ FET from SW2 to PGND

? Thermally Enhanced 32-Lead 4mx4mm QFN

APPLICATIONS

? Car Charger

? Power Bank

? 24V Industrial Applications

? Automotive Power Systems

? Multiple Power Source Supplies

? DC UPS

? Solar Powered Devices

? Solid-State Lighting

GENERAL DESCRIPTION

The ACT510x is a buck-boost converter with 4 integrated

MOSFETs. It offers a high efficiency, low component

count, compact solution for a wide input voltage:

3.9V to 23V

The 4 internal low resistance NMOS switches minimize

the size of the application circuit and reduce power

losses to maximize efficiency. Internal high side gate

drivers, which require only the addition of two small external

capacitors, further simplify the design process. An

advanced switch control algorithm allows the buckboost

converter to maintain output voltage regulation

with input voltages that are above, below or equal to the

output voltage. Transitions between these operating

modes are seamless and free of transients and subharmonic

switching.

The ACT510x has been optimized to reduce input current

in shipping, shutdown, and standby for applications

which are sensitive to quiescent current draw, such as

battery-powered devices.

The ACT510x output voltage can be set between 3V ~

23V which can be configured by either I2C (ACT5101)

or an external resistor divider (ACT5102). The output

constant current limit and cord compensation makes it

flexible for any kinds of protocols such as USB PD, QC

3.0/4.0 etc. The system can be monitored and configured

by I2C as well. The build-in ADC can be read for

the information of input/output voltages and currents,

and the die temperature.

ACT510x integrates a 100mA LDO with OCP/UVLO

protection to provide power for the MCU and other peripheral

components inside the system.

The ACT510x operation frequency can be configured

from 125 kHz to 1MHz, making the system design flexible

for components size and efficiency optimization.

The ACT510x has been optimized to reduce input current

for applications which are sensitive to quiescent

current draw, such as battery-powered devices.

The AC510x is available in 32-pin, 4 x 4 mm FCOL QFN

package.