深圳市科瑞芯电子有限公司

LPSemi/微源半导体  LP4081H DFN-10 16V、I2C控制的带电源路径的线性充电器

General Description

The LP4081H is an ultra-low power linear charger targetingat wearable applications protected up to 16V input voltage.It contains a linear charger to charge the Li-ion battery. AnI2C interface is offered for programmability and flexibility ofthe device. The charger has an ideal-diode mode for highefficiency and low heat operation. The LP4081H integratesthe power path management function to support SoCpowerup even with a deeply-discharged battery. 

TheLP4081H features 150mΩ low Rds,on of the BAT_FET fromthe battery to the system to achieve high dischargeefficiency and low heat.

The LP4081H provides rich protections, including the inputUnder-volage lockout protection (UVLO), input overvoltage protection (OVP) and system short circuitprotection (SCP).

The typical quiescent current of LP4081H is 0.6-μA and thebattery current is reduced to 0.4-uA in ship mode.

The whole system is in a 10-pin 3 X 3 DFN package.

Features

◆ 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 x 3mm DFN-10 package

◆ RoHS Compliant and 100% Lead (Pb) Free

Applications

◆ Wearable

◆ Fitness Application

◆ Smart Watch

产品规格书（部分）