The LP4032 is a standalone 1-cell switching battery charger providing up to 2A charge current to the battery from 4.1V to 6.2V input voltage. The charge current is programmable by a resistor connected from ISET to GND and the charge voltage is programmable by a resistor connected from VSET to GND. The LP4032 operates at 1.2MHz switching frequency allowing a small-size 1uH inductor for 2A fast charging. The patent-protected integrated current sensing and control technique eliminates external sensing resistor and allows very high charge efficiency, low BOM cost and very small footprint. The LP4032 charge current and end-of--charge (EOC) current accuracy is competitive compared to external-resistor-based current sensing and control architecture The LP4032 is available in DFN3*3-10 package.
IEC62368, high efficiency, current sensorless, high standing input voltage, TREG, OTP, OCP, NTC
封装
DFN-10(3*3）
特征
特征
◆ Easy-to-use standalone high-efficiency 1-cell switching charger - Proprietary sensorless charge current control - 4.1V to 6.2V input voltage with 28V absolute maximum input voltage rating - Resistor programmable charge voltages 4.1V/4.2V/4.25V/4.35V 3.6V/4.2V/4.40V/4.45V - 2.0A maximum fast charge current - 1.2MHz switching frequency - 95% high efficiency @ VBAT=3.8V, ICHG=2A - 93% high efficiency @ VBAT=3.8V, ICHG=2A - Input voltage regulation to allow weak input power source to charge battery - Support trickle charge, precharge, Current (CC) charge, Constant charge, charge termination and recharge ◆ High charge accuracy - +/- 0.5% charge voltage regulation - +/- 6% charge current regulation ◆ High integration - Integrated all MOSFETs - Internal loop compensation - Internal bootstrap diode - LED charge indication driver ◆ Protections - Cycle-by-cycle current limit protection - Input over-voltage protection (OVP) - Cold/hot battery temperature monitoring - Junction temperature thermal regulation - ISET pin short and open protection - Charge safety timer ◆ Packaging - DFN3x3-10 - RoHS compliant and halogen free - 100% lead (Pb) free
