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.