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  • Model：LM2794BLX
  • Manufacturer：HUABAN
  • Date Code：05+
  • Standard Package：
  • Min Order：10
  • Mark/silk print/code/type：42AM
  • Package：BLP14EHB

恒流
Constant Current		是 YES
恒压
Constant Voltage
拓扑
Topology		PWM，切换式电容器（充电泵） PWM, Switched Capacitor (Charge Pump)
输出数
Number of Outputs		4
内部驱动器
Internal Driver		是 YES
初级类型
Type - Primary		背光 Backlight
次级类型
Type - Secondary		白色 LED White LED
频率
Frequency		325KHz ~ 675KHz
电源电压
Voltage - Supply		2.7V ~ 5.5V
输出电压
Voltage - Output		3.8V
Description & ApplicationsFEATURES • Current Regulated Switched Capacitor LED Supply with Analog and PWM Brightness Control • Regulated current sources with ±0.5% matching between any two outputs • High efficiency 3/2 boost function • Drives one, two, three or four white LEDs • 2.7V to 5.5V Input Voltage • Up to 80mA output current • Analog brightness control • Active-low or high shutdown input (’94/95) • Very small solution size and no inductor • 2.3µA (typ.) shutdown current • 325kHz switching frequency (min.) • Constant Frequency generates predictable noise spectrum • Standard Micro SMD-14 package: 2.08mmX2.403mmX0.845mm High • Thin Micro SMD-14 package: 2.08mmX2.403mm X0.600mm High Applications • White LED Display Backlights • White LED Keypad Backlights • 1-Cell Li-Ion battery-operated equipment including PDAs, hand-held PCs, cellular phones
描述与应用特点 •电流调节开关电容LED电源与模拟和PWM亮度控制 •稳压电流源匹配±0.5％任何两个输出之间 •高效率升压功能3/2 •驱动一个，两个，三个或四个白光LED •2.7V至5.5V的输入电压 •高达80mA的输出电流 •模拟亮度控制 •主动高或低关断输入（94/95） •非常小的解决方案尺寸和无电感器 •2.3μA（典型值）的关断电流 •325kHz开关频率（分钟） •恒频产生可预见的噪声频谱 •标准微SMD-14封装：2.08mmX2.403mmX0.845mm高 •薄微型SMD-14封装：2.08mmX2.403mm X0.600mm高 应用 •白光LED显示器背光 •白光LED键盘背光 •1节锂离子电池供电设备，包括掌上电脑，手持电脑，蜂窝电话

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