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型号： |
LM2794BLX |
| 标记/丝印/代码/打字： |
42AM |
| 厂家： |
NATIONAL |
| 封装： |
BLP14EHB |
| 批号： |
05+ |
| 库存数量： |
50 |
| 所属分类： |
电源管理ICPower Management IC/PMIC
LED驱动LED Driver |
| 技术文档PDF： |
在线阅读  |
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LM2794BLX 42AM 的参数 |
| 恒流
Constant Current |
是 YES |
| 恒压
Constant Voltage |
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| 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 & Applications |
FEATURES ? 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 |
| 技术文档PDF下载 |
在线阅读 |
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相关型号列表 |
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批号 |
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| LM2794BLX |
42AM |
NATIONAL |
05+ |
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50 |
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