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

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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

Features

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 : http://www.ti.com/product/BQ24151A

Datasheet PDF Download


BQ24151A pdf

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

ICR18650-30B Datasheet – 2950mAh, Rechargeable Cell – Samsung

Part Number : ICR18650-30B

Function : Lithium-ion Rechargeable Cell, Nominal Capacity : 2950mAh (0.2C, 2.75V discharge)

Cell Dimension : Height : 65.00mm max, Diameter : 18.40mm max

Manufactures : Samsung

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ICR18650-30B samsung

 

Characteristics

1. Standard Charge

This “Standard Charge” means charging the cell with charge current 1475mA and constant voltage 4.35V at 25℃  for 3hours.

2. Standard Discharge Capacity

The standard discharge capacity is the initial discharge capacity of the cell, which is measured with discharge current of 590mA with 2.75V cut-off at 25℃  within 1hour after the standard charge.

Standard Discharge Capacity    ≥   2850mAh

3. Initial internal impedance

Initial internal impedance measured at AC 1kHz after rated charge.
Initial internal impedance    ≤   100mΩ

4. Temperature Dependence of Discharge Capacity

Capacity comparison at each temperature, measured with discharge constant current 590mA and 2.75V cut-off after the standard charge is as follows.

 

Specs

ICR18650-30B datasheet specs

ICR18650-30B Datasheet