CX7010 PSR-precision switching power supply control chip overview CX7010 is a high precision off-line switching power supply circuit, used in low-power AC / DC charger and adapter. CX7010 uses a 6 SOT23 package with a maximum power of 25W. CX7010 using primary sampling for accurate constant current control, eliminates the need for general application of the optocoupler and TL431. In constant current mode, the output power by CS pin external sense resistor Rs settings. Under constant pressure mode, multiple operating modes of the chip can guarantee higher overall conversion efficiency. In addition, the chip built-in cable drop compensation, thus making good load regulation. CX7010 in constant current mode works in PFM state, working in constant voltage mode PWM state, reduced frequency at light loads. CX7010 provides a power soft start function and various protection functions can be self-recovery, including by-cycle current limit protection (OCP), VDD over voltage protection (OVP), VDD over voltage clamp, undervoltage protection (UVLO), overtemperature protection. CX7010 has a shake-frequency function, can provide better EMI performance. Features? 5% over the full voltage range constant voltage accuracy of 5% of the current precision? Using primary side feedback control, eliminating the need for an optocoupler and TL431? Externally set current value of the output power? Built PSR constant Flow control? built-in adaptive peak current control? built-in primary inductance compensation? externally adjust the line drop compensation? a power soft start? Built-in Leading Edge Blanking (LEB) function?-by-cycle current limit protection (OCP)? undervoltage protection (UVLO), overvoltage protection (OVP), VDD voltage clamping protection? overtemperature protection? SOT23-6 package applications? cell phone charger? PDA, digital camera battery charger? TV, PC auxiliary power? Alternative linear regulator, RCC electricity