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Qorvo ACT8870QJ-T

Advanced PMU for Microcontrollers and Solid State Drive Applications

Overview

TopologyBuck Converter
Input voltage2.8-5.5 V
Switching frequency1125-2250 kHz
Output 11.25 V / 2.5 A
Output 23.3 V / 2.5 A
Output 31.5 V / 2.5 A

Description

The ACT8870 PMIC is an integrated ActivePMU powermanagement unit. It is designed to power a wide rangeof processors, including Atmel’s SAMA5D2, FPGA’s,peripherals, microcontrollers, and solid-state drive applications.It is highly flexible and can be reconfiguredvia I2C for multiple applications without the need forPCB changes. The low external component count andhigh 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 configuration.These settings can be optimized for a specificdesign through the I2C interface. The ACT8870 comesin several default configuration. Contact the factory forspecific default configurations.The core of the device includes four DC/DC step downconverters using integrated power FETs, three lowdropoutregulators (LDOs), and an optional load switch.Each DC/DC regulator switches at 2.25MHz, requiringonly three small components for operation. The LDOsonly require small ceramic capacitors. All are highlyconfigurable via the I2C interface.The ACT8870 PMIC is available in a 5 x 5 mm 40 pinQFN package or a 3.2x4.2 mm 0.5mm 48 ball waferchip-scale package.

Features

Wide input voltage range

  • Vin = 2.8V to 5.5V
    • Complete integrated power solution
  • 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 externalsupplies
    • Buck 1 Bypass Mode for 3.3V system levelcompliance
    • Highly configurable
  • uP interface for status reportingand controllability
  • Programmable Reset and PowerGood GPIO’s
  • Flexible Sequencing Options
    • I2C Interface – 1MHz

Typical applications

  • Microcontroller Applications,Video Processor
  • Solid-State Drives, FPGA

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