This part is a kind of semiconductor called PT4110.

Function of this product has High Efficiency White LED Driver.

Manufacturers : Powtech

Image and pinout :

PT4110 image and datasheet pinout



Some of the text within the PDF file :

PT4110 High Efficiency White LED Driver GENERAL DESCRIPTION The PT4110 is a high efficiency step-up DC/DC converter designed for driving multiple strings of up to eight series-connected white LED from a single cell Lithium Ion battery. It regulates the output current, ideal for driving light emitting diodes (LED) whose light intensity is proportional to the current passing through them. The external ballast resistor sets the LED current ranging from 5mA to 20mA, which can be easily adjusted using either a DC voltage or a pulse width modulated (PWM) signal alternatively. Its low 300mV feedback voltage reduces power loss and improves efficiency. The PT4110 has multiple features to protect itself from fault conditions including built-in open load protection, cycle-by-cycle current limit, over [ ... ]


PT4110 PDF Datasheet Download

2017/10/25 06:26 2017/10/25 06:26