The LP4023 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 lSET to GND. The charge can be enabled and disabled from lSET pin. The LP4023 operates at 1.2MHz switching frequency allowing a small-size 1uH inductor for 2A fast charging. The LPS patent-protected integrated current sensing and control technique eliminates external sensing resistor and allows high charge efficiency, low BOM cost and very small footprint.
Small solution footprint, 1uH inductor, 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 switching charger ◆ Proprietary sensorless charge current control ◆ 4.1V to 6.2V input voltage with maximum input voltage rating ◆ Charge voltages: 4.20V / 4.35 ◆ 2A maximum fast charge current ◆ 1.2MHz switching frequency ◆ 93% high efficiency @ VBAT=3.8V, ICHG= ◆ 89% 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 ◆ +/- 10% charge current regulation ◆ High integration ◆ Integrated all MOSFETs ◆ Internal loop compensation ◆ 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 ◆ Packaging ◆ DFN3x3-10 ◆ RoHS compliant and halogen free ◆ 100% lead (Pb) free
