产品概述
LN8120 is a wide inputrange, high-efficiency and high frequency DC-to DC step-down switching regulator,capable of delivering up to 2A of output current. With a fixed switchingfrequency of 500KHz, this current mode PWM controlled converter allows the useof small external components, such as ceramic input and output caps, as well assmall inductors. LN8120 also employs a proprietary control scheme that switchesthe device into a power save mode during light load, thereby extending therange of high efficiency operation. An OVP function protects the IC itself andits downstream system against input voltage surges. With this OVP function, theIC can stand off input voltage as high as 19V, making it an ideal solution forindustrial applications such as LCD TV, Set Top Box, Portable TV, etc.
产品特点
Wide Input Range: 4.2V-18V
High Efficiency PFM mode at light load
Capable of Delivering 2A
No External Compensation Needed
Current Mode Control
Thermal Shutdown and UVLO
Excellent Load and Line Transient Response
典型应用电路
产品概述
LN8322是一款可驱动高端和低端N沟道MOSFET栅极驱动芯片，用于同步降压、升降压和半桥拓扑中。高边侧悬浮电压的工作电压可以高达30V。
LN8322内部集成欠压锁死电路可以确保MOSFET在较低的电源电压下处于关断状态，以提高转换效率。集成使能关断功能，可以同时关断HO、LO的输出。
LN8322内置死区自适应功能，可以适应更多规格MOSFET，同时简化设计的繁琐。
LN8322采用ESOP-8、MSOP-8、DFN3*3-8等多种封装形式，给方案设计带来更多的选择。
应用领域
半桥/全桥转换器
同步降压、升降压拓扑
电子烟、无线充MOSFET驱动器
产品特点
电源电压工作范围为4.5V~13.2V
内置自举二极管
输出电流：+2A/-2A
兼容3.3V和5.5V PWM输入
UVLO时EN端输出低电平
内建死区自适应功能来防止FET交叉导通
EN端可同时关断上下两个MOSFET
VCC欠压锁死功能
采用SOP-8/ESOP-8、DFN3*3和MSOP8封装
绿色环保无卤，满足ROHS标准
封装
ESOP-8
DFN3*3
MSOP-8
典型应用电路
