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发布者:来自网络 发布时间:2016/12/14 阅读:4705次    关键字: PoE-PD
FP5207-非同步电流模式(CC模式)DC-DC升压转换器


FP5207-非同步电流模式(CC模式)DC-DC升压转换器 DataSheet

FP5207应用说明  Application Note

FP5207应用介绍  Application Note

概述
    FP5207 是一顆非同步电流模式(CC 模式)DC-DC 升压转换器,通过EXT Pin 控
制外部NMOS,输入低启动电压2.5V 与电压工作范围5V~24V,单节锂电池3V~4.2V 应用,
将Vout 接到HVDD Pin,精准反馈电压1.2V,内置软启动时间,外部可编程工作频率,可
编程电感器峰值电流限制将电阻从CS Pin 连接到GND。
封装:SOP-8(EP)

特征
1.输入电压5V~24V
2.启动电压2.8V
3.反馈电压1.2V±2%
4.关机静态功耗:小于3μA
5.可调工作频率:100KHz~1MHz
6.欠压保护,过温保护
7.可调过流保护(OCP)

应用
移动电源,蓝牙音响,快充,电子烟,大功率应急电源便携式产品等

FP5207-Non-Synchronous PWM Boost Controller

General Description
    The FP5207 is boost topology switching regulator for wide operating voltage applications. It provides built-in gate driver pin for driving external N-MOSFET. The non-inverting input of error amplifier connects to a 1.2V precision reference voltage. It has programmable switching frequency set by external resistor, and programmable inductor peak current limit connects a resistor from CS to GND. Current mode control and external compensation network make is easy and flexible to stabilize the system.
    The FP5207 is available in the small footprint SOP-8L(EP) package to fit in space-saving PCB layout for application fields.

Features
 Start-up Voltage: 2.8V
 Wide Supply Voltage Operating Range: 5V to 24V
 Precision Feedback Reference Voltage: 1.2V (±2%)
 Shutdown Current: <3μA
 Programmable Switching Frequency: 100KHz~1000KHz
 Input Under Voltage Protection(UVP)
 Switching MOSFET Over Current Protection (OCP)
 Over Temperature Protection (OTP)
 Package: SOP-8L(EP)

Applications
 Chargers
 LCD Displays
 Handheld Devices
 Portable Products
 Power Bank

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