COT DCDC CHIP

CT2001A/B

Product Introduction

CT2001A/B, a DCDC control chip independently developed by Zhongke Wireless Semiconductor, features a constant on-time (COT) control mode with a wide input voltage range, high efficiency, and high frequency. It incorporates two low-on-resistance power MOSFETs to achieve high-efficiency conversion. The adaptive COT architecture with a constant switching frequency ensures extremely fast transient response. The chip includes multiple protection functions such as peak current limiting, soft start, input overvoltage protection, output overvoltage protection, output undervoltage protection, output overcurrent protection, and overtemperature protection, ensuring safe and reliable operation.

Product advantages

1. Adopting an adaptive COT architecture with very fast transient response;

2. Wide input voltage range: 4.5V-18V;

3. 500kHz switching frequency;

4. Integrated 120m Ω/65m Ω power switch tube;

5. A comprehensive protection mechanism and high reliability.

Technical configuration and performance

Functional Block Diagram