CT1001SA
PSR ACDC CHIP
CT1001SA
Product Introduction
CT1001SA, A high-precision primary feedback ACDC control chip independently developed by Zhongke Wireless Semiconductor. ± 4% precision constant voltage output and ± 4% precision constant current output can be achieved without the need for optocouplers and TL431 devices. The output constant current value is adjusted by the resistance value of the CS pin and is independent of the main stage inductance. Built in adjustable line loss compensation function, which can achieve good load adjustment rate according to needs. Built in FB resistor short circuit protection, CS resistor short circuit protection, VDD overvoltage protection, output overvoltage protection, output short circuit protection, and over temperature protection, among other protection functions, ensure the safe and reliable operation of the chip.
Product advantages
1. Adopting a primary feedback structure, without the need for optocouplers and TL431 devices;
2. ± 4% constant voltage and constant current accuracy;
3. The standby power consumption can be less than 75mW, meeting the Level 6 energy consumption standard;
4. Adjustable line loss compensation function;
5. A comprehensive protection mechanism and high reliability.
Technical configuration and performance
Product Name | PSR ACDC chip |
Model | CT1001SA |
Package size | SOP8:4.9mm×3.9mm |
Constant voltage and current accuracy | ±4% |
Operating frequency | 250Hz-90kHz |
Starting current | 2uA |
Operating current | 600uA |
Maximum line loss compensation current | 50uA |
CS reference threshold | 500mV |
Operating Temperature | -40℃~+150℃ |
Power supply voltage | 4V~28V |
Application field | Suitable for low-power AC/DC offline SMPS, such as chargers for digital products such as mobile phones and cameras, adapters for low-power products such as routers, etc. |
Product rendering

Functional Block Diagram

Solution
