The LP4030 device is a highly-integrated switchingcharger for single cell Li-Ion and Li-Polymer battery. The device includes dual integrated N-channel power MOSFETs and a constant-frequency synchronous PWM controller.
The device supports charge current up to 3A and can withstand an input voltage up to 28V. The device is disabled while the input voltage exceeds the input over-voltage-protection threshold. The BAT pin can withstand a voltage up to 24V, which is designed for protecting the device from an over-shoot voltage in battery application systems.
The device provides various safety features for battery charging, including battery under/over temperature protection by an NTC monitoring circuit, device junction over temperature protection and cycle-by-cycle inductor current-limit protection. There is an input voltageregulation loop for dynamic power management by reducing the charge current when the input source current capacity is lower than the programmed charge current. The STAT output indicates the charging status.
The LP4030 is available in a DFN-10 (3x3mm) package.
