| 大功率升压恒流芯片 |
特性
nWide 3.6 v至32 v输入电压范围
n0.22V FB调节驱动电流
间接驱动11系列1 w LED在VIN > = 12 v
nFixed 180 khz切换频率
nMax。4合闸电流能力
国家联盟94%的效率
nExcellent线和负载调节
nEN销TTL关闭能力&与PWM调光功能
nInternal优化功率MOSFET
nBuilt软启动功能
nBuilt频率补偿
nBuilt热关机功能
nBuilt电流限制功能
nAvailable TO252-5L包大功率升压恒流芯片降压IC恒流降压IC驱动IC线性IC联系欧阳： QQ:
应用程序
问照明
nBoost恒流驱动
nMonitor LED背光
n7“15”LCD面板
一般的描述
AP9404监管机构是固定频率脉宽调制提高(升压)LED恒流驱动,能够驾驶系列1 w / 3 w / 5 w LED单位线和负载调节的。监管机构是易于使用,因为它包括内部频率补偿和固定频率振荡器,它需要一个最小数量的外部组件。
AP9404可以直接开车11系列1 w LED单元在VIN > 12 v。
PWM控制电路能够调整占空比线性从0到95%。一个支持函数,建在一个过流保护功能。内部补偿块是建立在外部组件数量降到 。
Features
n Wide 3.6V to 32V Input Voltage Range
n 0.22V FB adjustable LED drive current
n Directly drive 11 Series 1W LED at VIN>=12V
n Fixed 180KHz Switching Frequency
n Max. 4A Switching Current Capability
大功率升压恒流芯片降压IC恒流降压IC驱动IC线性IC联系欧阳： QQ:
n Up to 94% efficiency
n Excellent line and load regulation
n EN PIN TTL shutdown capability & With PWM Dimming Function
n Internal Optimize Power MOSFET
n Built in Soft-Start Function
n Built in Frequency Compensation
n Built in Thermal Shutdown Function
n Built in Current Limit Function
n Available in TO252-5L package
Applications
n LED Lighting
n Boost constant current driver
n Monitor LED Backlighting
n 7’ to 15’ LCD Panels
General Description
The AP9404 regulator is fixed frequency PWM Boost (step-up) LED constant current driver, capable of driving Series 1W/3W/5W LED units with excellent line and load regulation. The regulator is simple to use because it includes internal frequency compensation and a fixed-frequency oscillator so that it requires a minimum number of external components to work.
The AP9404 could directly drive 11 Series 1W LED units at VIN>12V .
大功率升压恒流芯片降压IC恒流降压IC驱动IC线性IC联系欧阳： QQ:
The PWM control circuit is able to adjust the duty ratio linearly from 0 to 95%. An enable function, an over current protection function is built inside. An internal compensation block is built in to minimize external component count.