Application Areas

Power bank with single battery and two 5V/2A outputs.

Reduced components

4-level of LED power indication, high brightness flashlight directly driven by GPIO, without requiring external transistors.

Complete protection

Including over voltage protection, over current protection and over temperature protection functions for the charge/discharge battery terminal.


With the ever increasing use of mobile devices, the requirement for long-term usage is increasing the demand for mobile power banks. For these products, the features of multi-purpose applications and simplified volume production have become the product’s development key points.
Holtek has developed a range of MCUs dedicated for use in power bank applications. These MCUs include features such as integrated charge buck PWM control, discharge boost PWM control, power indication management as well as other necessary features. These functions accompanied by an external MOSFET and by examining the power bank product specification requirements, can allow the proper power management device to be selected. The provided power bank application solution has utilised the HT45F4MA as an example to show a reference design for a single-cell dual-2A (5V/2A) output power bank. The solution can fully support battery charge and discharge functions and can also automatically detect the connection of an external charge power source.
Holtek provides technical data such as block diagrams, application circuits, PCB, BOM, etc, to assist users with their rapid product development. For more related technical information regarding our Single-cell dual-2A (5V/2A)output power bank solutions, click the file download graphic link on this page.


Download Instructions

Thank you for visiting our website. You can download the following types of file content from this website

PCB Block Diagram Code

All information, trademarks, logos, graphics, videos, audio clips, links and other items appearing on this website ('Information') are for reference only and is subject to change at any time without prior notice and at the discretion of Holtek Semiconductor Inc. (hereinafter 'Holtek', 'the company', 'us', 'we' or 'our'). Whilst Holtek endeavors to ensure the accuracy of the Information on this website, no express or implied warranty is given by Holtek to the accuracy of the Information. Holtek shall bear no responsibility for any incorrectness or leakage.
When using any of the services provided on this website, it indicates that you have read, understood and agreed to comply with the relevant regulations of the site, the declaration of intellectual property and disclaimer. If you do not agree to these terms of service it is important that you stop using the services provided by this website. Thank you.







1. 免责声明


2. 责任限制


3. 管辖法律


4. 免责声明更新