Datasheet > BQ25306RTER

BQ25306RTER

更新时间： 2023-09-03 20:29:29

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BQ25306RTER 数据手册

BQ25306

www.ti.com.cn

ZHCSMH4A –MARCH 2020 –REVISED NOVEMBER 2020

表7-1. Pin Functions (continued)

I/O⁽¹⁾

DESCRIPTION

NAME

NO.

Battery voltage feedback input. Connect this pin to resistor divider’s middle point to program battery

charge voltage. When this pin is shorted to GND or open by fault, the converter stop switching and STAT

pin blinks. The resistor divider consists of a resistor R1 from battery positive terminal to FB pin and a

resistor R2 from FB pin to FB_GND. The recommended resistance value of R2 is 200kΩor lower. The

battery charge voltage is programmed as VBATREG = 1.1 (1 + R1/R2). The voltage regulation loop is

internally compensated and a 470pF feedforward capacitor is recommended to connect from battery to FB

pin.

Battery voltage feedback ground input. Connect the feedback resistor divider's low side resister to this pin.

The input of this pin is in high impedance when adaptor is unplugged or the charger is disabled by EN pin.

FB_GND

POL

EN pin polority selection. Keep this pin floating for standalone charger.

Device sisable input. With POL pin floating, the device is enabled with EN pin floating or pulled low, and

the device is disabled if EN pin is pulled high. With POL pin grounded, the device is enabled with EN pin

pulled high, and the device is disabled with EN pin pulled low or floating.

Ground reference for the device that is also the thermal pad used to conduct heat from the device. This

connection serves two purposes. The first purpose is to provide an electrical ground connection for the

device. The second purpose is to provide a low thermal-impedance path from the device die to the PCB.

This pad should be tied externally to a ground plane. Ground layer(s) are connected to thermal pad

through vias under thermal pad.

Thermal Pad

(1) AI = Analog input, AO = Analog Output, AIO = Analog input Output, DI = Digital input, DO = Digital Output, DIO = Digital input Output,

P = Power

English Data Sheet: SLUSDC7

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