BENEFITS and FEATURES

• Wide input voltage range

• Vin = 2.7V to 5.5V

• Complete integrated power solution

• One 4A DC/DC Step-Down with Bypass Mode

• Two 3A DC/DC Step-Down Regulators

• Two 300mA LDOs

• High Power Load Switch Gate Driver with Slew

Rate Control

• Space Savings

• Fully integrated

• High Fsw = 2.25MHz or 1.125MHz

• Integrated sequencing

• Standard PTH PCB Compatible Footprint

• Easy system level design

• Configurable sequencing

• Seamless sequencing with external supplies

• Programmable Reset and Power Good GPIO’s

• Buck 1 Bypass Mode for 3.3V system level

compliance

• Highly configurable

• μP interface for status reporting and controllability

• Flexible Sequencing Options

• I2C Interface – 1MHz

• Multiple Sleep Modes

• See ACT88325 for non-Pushbutton Startup

APPLICATIONS

• Solid-State Drives

• Microcontroller Applications

• FPGA

• Personal Navigation Devices

GENERAL DESCRIPTION

The ACT88326 PMIC is an integrated ActivePMU™

power management unit. It is highly flexible and can be

reconfigured via I2C for multiple applications without the

need for PCB changes. The low external component

count and high configurability significantly speeds time

to market. Examples of configurable options include

output voltage, startup time, slew rate, system level

sequencing, switching frequency, sleep modes,

operating modes etc. The core of the device includes 3

DC/DC step down converters using integrated power

FETs, and 2 low-dropout regulators (LDOs). Each

regulator can be configured for a wide range of output

voltages through the I2C interface.

ACT88326 is programmed at the factory with a default

configuration. The default settings can be optimized for

a specific design through the I2C interface. Contact the

factory for specific default configurations.

The ACT88326 includes features that allow flexibility for

all system level configurations. The buck converter can

be reconfigured as a bypass switch. It also contains a

high power load switch controller. It’s external power

supply enable and power good interface allows

seamless sequencing with external power supplies.

The ACT88326 PMIC is available in a 2.7 x 3 mm 36 pin

WLCSP package. The IC pinout is optimized to allow

standard, low-cost PTH PCB layouts.