16V, I2C Controlled Linear Charger with Power Path
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LP4081H
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概述
The LP4081H is an ultra-low power linear charger targeting at wearable applications protected up to 16V input voltage. It contains a linear charger to charge the Li-ion battery. An I2C interface is offered for programmability and flexibility of the device. The charger has an ideal-diode mode for high efficiency and low heat operation. The LP4081H integrates the power path management function to support SoC powerup even with a deeply-discharged battery. The LP4081H features 150mΩ low Rds,on of the BAT_FET from the battery to the system to achieve high discharge efficiency and low heat. The LP4081H provides rich protections, including the input Under-volage lockout protection (UVLO), input overvoltage protection (OVP) and system short circuit protection (SCP).The typical quiescent current of LP4081H is 0.6-µA and the battery current is reduced to 0.4-uA in ship mode.The whole system is in a 10-pin 3 X 3 DFN package.
应用
◆ Wearable ◆ Fitness Application ◆ Smart Watch
数据参数
数据参数
最大充电电流(mA)
1100
工作电压(V)
2.6~16
过压保护
5.7
电池电压(V)
4.0~4.5
温度检测
Y
使能控制
-
充满指示
-
充电状态指示
-
电源状态指示
-
电池节数
1
产品特征/功能
Ultra-high Efficiency ,I2C, Power Path ,±0.3% Voltage Accuracy
封装
DFN-10(3*3)
特征
特征
◆ Input over-voltage protected up to 16V ◆ Charge Management - Programmable charge current up to 1A - Programmable floating voltage with 0.3% accuracy - Programmable trickle charge and termination current ◆ Charge and discharge current monitor ◆ Automatic re-charge and thermal foldback ◆ I2C bus to SoC with an interrupt pin ◆ Low drop-out fast charge function ◆ Power Path Management ◆ Charge safety timer and watchdog ◆ NTC management ◆ Rich protections: UVLO, OVP, SCP ◆ 0.6-µA ultra-low iq in standby mode ◆ 0.4-µA ultra-low iq in ship mode ◆ 3mm Χ 3mm DFN-10 package ◆ RoHS Compliant and 100% Lead (Pb) Free
