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
