TP4057 Datasheet PDF – Lithium Battery Cell Charging IC

Part Number : TP4057

Function : 500mA Linear Li-Ion Battery Charger

Manufacturers : NanJing Top Power  ASIC Corp

Pinout :
TP4057 datasheet

Description :

TP4057 a complete single-cell lithium-ion battery charger with battery reverse polarity protection, using a constant electric Current / constant voltage linear control.

Its SOT packaging and low external component count makes reasonable TP4057 portable applications Want to select. TP4057 can fit USB power supply and adapter power supply.

TP4057 Datasheet PDF
TP4057 pdf

Other data sheets within the file : TP4057, TP4057-42-SOT26-R

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BQ24151A Datasheet PDF – One-Cell Li-Ion Charger

Part Number : BQ24151A

Function : Fully Integrated Switch-Mode One-Cell Li-Ion Charger With Full USB Compliance and USB-OTG Support

Package : 2 x 2 mm 20-Pin WCSP Type

Manufacturers : Texas Instruments

Product Image :

BQ24151A datasheet


Description :

The bq24150A/1A is a compact, flexible, high-efficiency, USB-friendly switch-mode charge management device for single-cell Li-ion and Li-polymer batteries used in a wide range of portable applications. The charge parameters can be programmed through an I2C interface. The bq24150A/1A integrates a synchronous PWM controller, power MOSFETs, input current sensing, high-accuracy current and voltage regulation, and charge termination, into a small WCSP package.

The bq24150A/1A charges the battery in three phases: conditioning, constant current and constant voltage. The input current is automatically limited to the value set by the host. Charge is terminated based on user-selectable minimum current level. A safety timer with reset control provides a safety backup for I2C interface. During normal operation, bq24150A/1A automatically restarts the charge cycle if the battery voltage falls below an internal threshold and automatically enters sleep mode or high impedance mode when the input supply is removed. The charge status is reported to the host using the I2C interface.

During the charging process, the bq24150A/1A monitors its junction temperature (TJ) and reduces the charge current once TJ increases to approximately 125°C. To support USB OTG device, bq24150A/1A provides VBUS (approximately 5.05 V) by boosting the battery voltage. The bq24150A/1A is available in 20-pin WCSP package


1. Charge Faster than Linear Chargers
2. High-Accuracy Voltage and Current Regulation
3. High-Efficiency Mini-USB/AC Battery Charger for Single-Cell Li-Ion and Li-Polymer Battery Packs
4. 20-V Absolute Maximum Input Voltage Rating
5. 6-V Maximum Operating Input Voltage
6. Built-In Input Current Sensing and Limiting

Official Homepage :

Datasheet PDF Download

BQ24151A pdf

Other data sheets within the file : BQ24150AYFFR, BQ24150AYFFT, BQ24151A,