EA8945AQJ405: 7-Chan Buck, 2.7 ~ 5.5V in

Summary

The ACT8945AEV contains a fully assembled and tested circuit board designed to demonstrate all the features of the ACT8945A. The ACT8945AEV includes a variety of test points and jumpers as necessary to configure and evaluate the ACT8945A’s functionality.

To evaluate the advanced features of REG1 to REG7, click the Advanced Mode button and select the REG tabs to allow direct access to the control bits. Refer to the ACT8945A data sheet for more information regarding the REG1 to REG7 control registers.

Specifications

Manufacturer Qorvo US Inc.
Category AC/DC and DC/DC Conversion
Sub-Category DC/DC SMPS - Multi Output
Eval Board Board not Stocked
Topology Step Down
Outputs and Type 7 Non-isolated
Voltage Out: Highest Current First 3.3, 1.8, 1.2, 3.3, 2.5V, 0.6V x2
Current Out 1.3A, 1.15A, 1.15A, 320mA (x3)
Voltage In 2.7 ~ 5.5 V
Efficiency @ Conditions >90%, 5V in, 3.3V @ 90 ~ 1000 mA (Reg 3)
>90%, 4.2V in, 3.3V @ 5 ~ 1000 mA (Reg 3)
>90%, 3.6V in, 3.3V @ 1.4 ~ 1000 mA (Reg 3)
>80%, 5V in, 1.8V @ 17 ~ 1000 mA (Reg 1)
>80%, 5V in, 1.2V @ 60 ~ 1000 mA (Reg 2)
>80%, 4.2V in, 1.8V @ 7 ~ 1000 mA (Reg 1)
>80%, 4.2V in, 1.2V @ 10 ~ 1000 mA (Reg 2)
>80%, 3.6V in, 1.8V @ 3 ~ 1000 mA (Reg 1)
>80%, 3.6V in, 1.2V @ 4 ~ 1000 mA (Reg 2)
Voltage Out Range 0.6 ~ 3.9 V
Features Current Limit (Adj. or Fixed)
GUI / Design Software
I²C Interface
Over Current Protection
Over Voltage Protection
Power Good Output
Shutdown, Enable, Standby
Soft Start
Thermal Protection
Under Voltage Protection, Brown-Out
Switching Frequency 2 MHz
Standby Current [Typical] 0 µA
Quiescent Current [Typical] 65 µA
Component Count + Extras 28 + 20
Internal Switch Yes
Design Author Active-Semi
Application / Target Market Factory Automation
Medical
Networking
Power: Industrial Power
RF: Home Automation
White Goods
Standby Current [Maximum] 1 µA
Quiescent Current [Maximum] 4.5 mA
Main I.C. Base Part ACT8945A
Date Created By Author 2013-08
Date Added To Library 2025-06

Support Documents & Media

ACT8945AEV - User Guide ACT8945A - Datasheet

Media

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