Datasheet > BQ25300RTER

BQ25300RTER

更新时间： 2024-01-20 23:26:45

品牌	Logo	应用领域
德州仪器 - TI		电池
页数	文件大小	规格书
32页	1669K
描述
BQ25300 Standalone 1-Cell, 17-V, 3.0-A Battery Charger

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BQ25300RTER 数据手册

BQ25303J

SLUSDT8 – FEBRUARY 2021

www.ti.com

5 Description (continued)

The BQ25303J supports 4.1-V to 17-V input to charge single cell batteries. The BQ25303J provides up to 3-A

continuous charge current to a single cell 1S battery The device features fast charging for portable devices. Its

input voltage regulation delivers maximum charging power to the battery from input source. The solution is highly

integrated with an input reverse-blocking FET (RBFET, Q1), high-side switching FET (HSFET, Q2), and low-side

switching FET (LSFET, Q3).

The BQ25303J features lossless integrated current sensing to reduce power loss and BOM cost with minimized

component count. It also integrates a bootstrap diode for the high-side gate drive and battery temperature

monitor to simplify system design. The device initiates and completes a charging cycle without host control. The

BQ25303J charge voltage and charge current are set by external resistors. The BQ25303J detects the charge

voltage setting at startup and charges the battery in four phases: battery short, pre-conditioning, constant

current, and constant voltage. At the end of the charging cycle, the charger automatically terminates if the

charge current is below the termination current threshold and the battery voltage is above the recharge

threshold. When the battery voltage falls below the recharge threshold, the charger will automatically start

another charging cycle. The charger provides various safety features for battery charging and system

operations, including battery temperature monitoring based on negative temperature coefficient (NTC)

thermistor, charge safety timer, input over-voltage and over-current protections, as well as battery over-voltage

protection. Pin open and short protection is also built in to protect against the charge current setting pin ICHG

accidently open or short to GND. The thermal regulation regulates charge current to limit die temperature during

high power operation or high ambient temperature conditions.

The STAT pin output reports charging status and fault conditions. When the input voltage is removed, the device

automatically enters HiZ mode with very low leakage current from battery to the charger device. The BQ25303J

is available in a 3 mm x 3 mm thin WQFN package.

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与BQ25300RTER相关器件

型号	品牌	获取价格	描述	数据表
BQ25302	TI	获取价格	BQ25303J Standalone 1-Cell, 17-V, 3.0-A Battery Charger with JEITA Battery Temperature Mon
BQ25302RTER	TI	获取价格	BQ25302 Standalone 1-Cell 2.0-A Buck Battery Charger
BQ25303J	TI	获取价格	BQ25303J Standalone 1-Cell, 17-V, 3.0-A Battery Charger with JEITA Battery Temperature Mon
BQ25303JRTER	TI	获取价格	BQ25303J Standalone 1-Cell, 17-V, 3.0-A Battery Charger with JEITA Battery Temperature Mon
BQ25306	TI	获取价格	独立型 17V、3A 1 至 2 节降压电池充电器
BQ25306RTER	TI	获取价格	独立型 17V、3A 1 至 2 节降压电池充电器 \| RTE \| 16 \| -40 to
BQ25308	TI	获取价格	具有无电电池充电抑制功能的独立单节 17V 3A 电池充电器
BQ25308RTER	TI	获取价格	具有无电电池充电抑制功能的独立单节 17V 3A 电池充电器 \| RTE \| 16 \|-4
BQ2540-7P	BEL	获取价格	DC-DC Regulated Power Supply Module,
BQ2540-7R	POWER-ONE	获取价格	60...132 Watt DC-DC Converters

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