General Description     LP64920同步整流车充2.4A方案芯片

The LP64920 is a synchronous, rectified, step-down, switch-mode converter with built-in power MOSFET. The LP64920 offers a very compact solution that achieves a maximum of 2.4A of continuous output current. LP64920同步整流车充2.4A方案芯片

The LP64920 has synchronous mode operation for high efficiency over the output current load range. Current-mode operation provides fast transient response and eases loop stabilization.

The LP64920 requires a minimum number of readily available standard external components. Other features include cable compensation, programmable current limit and thermal shutdown.

Order Informatio

LP64920 □ □ □ □      

Features

u Wide 8V to 30V Continuous Operating Input Range

u 78mΩ/65mΩ Low RDS(ON) Internal Power MOSFET

u Up to 93% Efficiency

u Default 160kHz Switching Frequency

u Internal Soft Start

u Output Line Drop Compensation

u Over-Current Protection (OCP) programmable with External Resistor

u No Loop Compensation Required

u Thermal Shutdown

u Available in SOP8 Package

Typical Application Circuit

47uH

5.1V/2.4A

F: Pb-Free

Package Type SO: SOP8

Current Sense Voltage A: VCS=53mV

B: VCS=65mV

100uF

1uF

VIN

GND

SW

LP64920    FB

CS

Rsen 22mR

Rup 15K

Rdn 2K

10uF

470uF

Vout-

Applications

² Car Charger

² Pre-Regulator for Linear Regulators

² Distributed Power Systems

² USB Dedicated Charging Ports (DCP)