Datasheet > ACT8870

ACT8870

更新时间： 2025-08-18 01:17:15

品牌	Logo	应用领域
技领 - ACTIVE-SEMI		微控制器
页数	文件大小	规格书
38页	3901K
描述
Advanced PMU for Microcontrollers and Solid State Drive Applications

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ACT8870 数据手册

ACT8870QJ-T

REV 0 23-DEC-2016

Advanced PMU for Microcontrollers and Solid State Drive Applications

BENEFITS and FEATURES

GENERAL DESCRIPTION



Wide input voltage range

Vin = 2.8V to 5.5V

Complete integrated power solution

The ACT8870 PMIC is an integrated ActivePMU power

management unit. It is designed to power a wide range

of processors, including Atmel’s SAMA5D2, FPGA’s,

peripherals, microcontrollers, and solid-state drive ap-

plications. 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.

ACT8870 is programmed at the factory with default con-

figuration. These settings can be optimized for a specific

design through the I²C interface. The ACT8870 comes

in several default configuration. Contact the factory for

specific default configurations.

One 4A DC/DC Step-Down (Buck)

Regulator

Three 2.5A DC/DC Step-Down

(Buck) Regulators

One 800mA LDO

Two 200mA LDOs



Space Savings

Fully integrated

High Fsw =2.25MHz or 1.125MHz

Integrated sequencing

Easy system level design

Configurable sequencing

Seamless sequencing with external

supplies

The core of the device includes four DC/DC step down

converters using integrated power FETs, three low-

dropout regulators (LDOs), and an optional load switch.

Each DC/DC regulator switches at 2.25MHz, requiring

only three small components for operation. The LDOs

only require small ceramic capacitors. All are highly

configurable via the I²C interface.



Buck 1 Bypass Mode for 3.3V system level

compliance

Highly configurable

uP interface for status reporting

and controllability

Programmable Reset and Power

Good GPIO’s

The ACT8870 PMIC is available in a 5 x 5 mm 40 pin

QFN package or a 3.2x4.2 mm 0.5mm 48 ball wafer

chip-scale package.

Flexible Sequencing Options



I²C Interface – 1MHz

APPLICATIONS

•

Microcontroller Applications

Solid-State Drives

FPGA

Video Processor

Innovative Power^TM

ActiveSwitcher^TMis a trademark of Active-Semi.

12 3 4 5 6 7...38

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