BP2309
特點
? 有源功率因數校正，高PF值，低THD ? 高達95%的系統效率
? 超快LED 啟動 ( <300ms @85Vac) ? ±3% LED 輸出電流精度
? 優異的線電壓調整率和負載調整率 ? 電感電流臨界連續模式 ? 源極驅動方式
? 超低 (20uA) 啟動電流 ? 超低 (600uA) 工作電流 ? FB反饋電阻值高，功耗低 ? LED短路/開路保護
? 電流采樣電阻短路/開路保護 ? 變壓器飽和保護 ? 逐周期電流限流
? 芯片供電過壓/欠壓保護 ? 自動重啟功能 ?
采用SOP-8封裝
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
主要特點：
? 極低的啟動電流和工作電流? 臨界連續模式工作? 電壓模控制? 支持功率因數校正? 最大導通時間可調? 提供VCC欠壓保護? 提供VCC鉗位、過壓保護? 提供LED開路保護功能? 提供驅動信號Gate高電平電壓鉗位? 支持輸出電壓過壓保護? 提供逐周期限流保護功能? 提供過溫保護功能
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%
技術索樣：1378271156
