TP4056-MS

The TP4056-MS is the ESOP-8 ordering code for the MSKSEMI TP4056, a standalone linear charger for single-cell lithium-ion and lithium-polymer batteries. It charges at up to 1 A set by one external resistor, regulates the float voltage to 4.2 V within 1%, trickle-charges cells below 2.9 V, terminates automatically at C/10 and needs no external MOSFET, sense resistor or blocking diode thanks to its internal reverse-charge protection; open-drain CHRG and STDBY pins report charge status, and standby drain on the battery falls below 1 uA when input power is removed. Brand discipline matters on this code: TP4056 dies are sold by several makers, and this page covers the MSKSEMI device and its specification only, not any other vendor's same-name part. Selection advice: the exposed-pad ESOP-8 and its copper area set the practical charge current through thermal regulation, so lay out the pad generously for sustained 1 A charging. Parameters verified against MSKSEMI documentation.