TP4120-Portable USB fan control solution

Chip Solution Battery Power Management Chip TP4120

Input as TYPEC block

Input voltage: 5V

The battery is 18650 cells, or in direct welding mode.

FAN interface is XH2.54 2p

Instructions:

Short press K1 to display battery power, long press to turn off fan output.

K2 short press 3rd gear + close cycle, long press to turn on LED lighting.

TYPE input charging LED4 lights up

TP4120 is a portable USB fan control chip.

The chip integrates charging management functions, boost management functions, protection functions, button control and gear indication functions, etc.

Provides a single-chip solution for portable USB fan applications powered by lithium batteries.

 TP4120 adopts linear charging technology with a fixed charging current of 800mA.

It supports trickle charging and constant temperature charging modes at the same time, and has charging and full LED indication functions.

TP4120 supports 5V/6V/7V three-speed boost output, and the three-speed output can be switched by pressing the button.

TP4120 integrates gear position LED indication and flashlight function.

TP4120 has a variety of gear switching modes, which can be configured by connecting the MODEA and MODEB pins to high and low levels to meet a variety of application needs. 

TP4120 integrates a variety of protection functions to ensure system stability and reliability. 

Including over-temperature protection, over-charge and over-discharge protection, output over-voltage protection, output short-circuit protection, etc.

At the same time, the application circuit of TP4120 is simple and requires only a few components to realize a complete portable charging fan solution, which greatly saves the cost and size of the system.