产品概述
描述
The LED7706 consists of a high efficiency monolithic boost converter and six controlled current generators (rows) specifically designed to supply LEDs arrays used in the backlighting of LCD panels. The device can manage an output voltage up to 36 V (i.e. 10 white LEDs per row).
The generators can be externally programmed to sink up to 30 mA and can be dimmed via a PWM signal (1 % dimming duty-cycle at 20 kHz can be managed). The device allows to detect and manage the open and shorted LED faults and to let unused rows floating. Basic protections (output over-voltage, internal MOSFET over-current and thermal shutdown) are provided.
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所有功能
- Boost section
4.5 V to 36 V input voltage range Internal power MOSFET Internal +5 V LDO for device supply Up to 36 V output voltage Constant frequency peak current-mode control 250 kHz to 1 MHz adjustable switching frequency External synchronization for multi-device application Pulse-skip power saving mode at light load Programmable soft-start Programmable OVP protection Stable with ceramic output capacitors Thermal shutdown - Backlight driver section
Six rows with 30 mA maximum current capability (adjustable) Rows disable option Less than 500 ns minimum dimming ontime (1 % minimum dimming duty-cycle at 20 kHz) ±2 % current matching between rows LED failure (open and short-circuit) detection
- Boost section
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EDA符号、封装和3D模型
STMicroelectronics - LED7706
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符号
封装
3D模型
样片和购买
| 产品型号 | 供货状态 | Budgetary Price (US$)*/Qty | 从ST订购 | Order from distributors | 封装 | 包装类型 | RoHS | Country of Origin | ECCN (US) | ECCN (EU) | 温度（ºC） | Operating Temperature (°C) (min) | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 最小值 | 最大值 | |||||||||||||
| LED7706TR | | | distributors 无法联系到经销商，请联系我们的销售办事处 | QFN-24L | Tape and Reel | PHILIPPINES | EAR99 | NEC | - | - | - | |||
LED7706TR 批量生产