ET5120A Datasheet PDF - Etek Microelectronics
| Part Number | ET5120A | |
| Description | Efficiency Boost LED Driver | |
| Manufacturers | Etek Microelectronics | |
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There is a preview and ET5120A download ( pdf file ) link at the bottom of this page. Total 9 Pages | ||
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Etek
Microelectronics
ET5120/A
37V，带 PWM 控制，高效升压式 LED 驱动器
概述
ET5120 是一颗多功能的恒定电流 LED 驱动器，采用高效 DC-DC 升压转换器架构。此电路集成功率
MOSFET，使外部元件总数最小。独特的技术和 880mA 限流使 ET5120 驱动输出达到 37V（10 颗 LED 串
联）。
另外，在驱动每串 3 颗 LED 串联时，ET5120 能输出 180mA 的总电流。实现高转换效率的同时，它
也能使电流能力最大化。经过优化的 0.9MHz 开关频率,使驱动器外围可以采用小尺寸元件。驱动器在 CTRL
脚允许一个宽范围的 PWM 调光频率。
ET5120 内置了多种保护功能，包括逐个周期输入电流限制保护，LED 开路（输出过压）保护和热关
断保护。关机模式的漏电流小于 1µA。
功能特点
z 宽输出电压范围：可驱动 10 颗串联的 LED
z 集成 40V 耐压的大电流开关（限流 880mA）
z 输入电压范围：2.7V~5.5V
z 高效率 PWM 升压转换器（可达 90%）
z 较低的反馈电压：
ET5120：300mV
ET5120A：200mV
z 整个负载范围内高精度输出
z LED 开路保护（OVP）：37V
z 0.9MHz 开关频率
z PWM 调光频率：100Hz~200kHz
z 简单，小的尺寸
z 集成软启动
z 关机电流小于 1µA
z 封装形式：ET5120(SOT23-6), ET5120A(TSOT23-6)
应用
z LED 背光驱动
z 移动电话
z 手持设备
z 数码相框
z 汽车导航
Rev 1.0 2013-08-30
1/9
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ET5120/A
典型特性
除非特别说明，VIN=3.6V, ILED=20mA, 6 个 LED 串联, L=22µH, Cin=10µF, Cout=0.47µF, Temp=25ºC。
Rev 1.0 2013-08-30
5/9
Preview 5 Page |
Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for ET5120A electronic component. |
| Information | Total 9 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ ET5120A.PDF Datasheet ] | |
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Featured Datasheets
| Part Number | Description | MFRS |
| ET5120 | The function is Efficiency Boost LED Driver. Etek Microelectronics | |
| ET5120A | The function is Efficiency Boost LED Driver. Etek Microelectronics | |
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