BP2309
特点
有源功率因数校正，高PF值，低THD 高达95%的系统效率
超快LED 启动 ( <300ms @85Vac) ±3% LED 输出电流精度
优异的线电压调整率和负载调整率 电感电流临界连续模式 源极驱动方式
超低 (20uA) 启动电流 超低 (600uA) 工作电流 FB反馈电阻值高，功耗低 LED短路/开路保护
电流采样电阻短路/开路保护 变压器饱和保护 逐周期电流限流
芯片供电过压/欠压保护 自动重启功能
采用SOP-8封装
BP2309
Characteristic
active power factor correction, high PF, low THD
· the system efficiency as high as 95%
ultrafast LED promoter (<300ms @85Vac)
± 3% LED output current accuracy
· excellent line voltage regulation and load regulation
BCM source driving mode
ultra low start-up current (20uA)
ultra low (600uA) working current
FB feedback high resistance, low power consumption
LED short / open circuit protection
current sampling resistance short-circuit or open-circuit protection
transformer saturation protection
cycle-by-cycle current limiting Under-voltage protection
chip power supply overvoltage /
automatic restart function
The SOP-8 package
QX9911
主要特点：
极低的启动电流和工作电流 临界连续模式工作 电压模控制 支持功率因数校正 最大导通时间可调 提供VCC欠压保护 提供VCC钳位、过压保护 提供LED开路保护功能 提供驱动信号Gate高电平电压钳位 支持输出电压过压保护 提供逐周期限流保护功能 提供过温保护功能
PFC95%
Main features:
Very low starting current and the operating current
Critical continuous mode
Voltage mode control
Support power factor correction
Maximum conduction time adjustable
Provides VCC under-voltage protection
Provides VCC clamp, overvoltage protection
Provides LED open circuit protection function
Provides drive signals for the Gate high level voltage clamp
Support output voltage over-voltage protection
Provides cycle-by-cycle current limiting protection function
Provide over-temperature protection function
PFC95%
技术索样：1378271156
