器件名称: LP78084-30QVF
功能描述: Total Power solution of Portable Applications 800mA Charge +800mA Buck DC/DC+300mA LDO
文件大小: 1365.71KB 共20页
简 介:Preliminary Datasheet
LP78084
Total Power solution of Portable Applications 800mA Charge +800mA Buck DC/DC+300mA LDO
General Description
The LP78084 is a complete constant-current/ constant-voltage linear battery charger for a single-cell 4.2V lithium-ion battery with a 800mA step-down converter, and a 300mA low dropout (LDO) linear regulator. The input voltage range is 3.75V to 5.5V for the battery charger and 2.6V to 5.5V for the step-down converter and linear regulator, making it ideal for applications operating with single-cell lithium-ion/polymer batteries. The battery charger offers an integrated pass device, reverse blocking protection, high accuracy current and voltage regulation, charge status, and charge termination. The charging current is programmable via external resistor from 15mA to 800mA. In addition to these standard features, the device offers current limit, thermal protection, and soft-start. The step-down converter is a highly integrated converter operating at a 1.5MHz switching frequency, minimizing the size of external components while keeping switching losses low. It has independent input and enable pins. The output voltage ranges from 0.6V to the input voltage. The LP78084 linear regulator is designed for fast transient response and good power supply ripple rejection. Designed for 300mA of load current, it includes short-circuit protection and thermal shutdown. The LP78084 is available in a 16-lead 3mm*4mm TDFN package and is rated over the -40°C to ……
