LED7707：LED driver with boost regulator, 6-rows 85 mA, for LCD panels backlight
The LED7707 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 85 mA and can be dimmed via a PWM signal (1 % dimming duty-cycle at 1 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.
Key Features
- Boost section4.5 V to 36 V input voltage rangeInternal power MOSFETInternal +5 V LDO for device supplyUp to 36 V output voltageConstant frequency peak current-mode control250 kHz to 1 MHz adjustable switching frequencyExternal synchronization for multi-device applicationPulse-skip power saving mode at light loadProgrammable soft-startProgrammable OVP protectionStable with ceramic output capacitorsThermal shutdown
- Backlight driver sectionSix rows with 85 mA maximum current capability (adjustable)Rows disable optionLess than 10 μs minimum dimming on-time±2 % current matching between rowsLED failure (open and short-circuit) detection
产品规格
应用手册
宣传册
手册
解决方案评估工具
| 型号 | 制造商 | Description |
|---|
| STEVAL-ILL021V1 | | LCD panels backlight demonstration board based on the LED7707 |
样片和购买
| 型号 | Quantity | Unit Price (US$)
* | Package | Packing Type | Operating Temperature (°C) (min) | Operating Temperature (°C) (max) | ECCN (EU) | ECCN (US) | Country of Origin |
|---|
| LED7707TR | 1000 | 1.081 | QFN-24L | Tape And Reel | -40 | 150 | NEC | EAR99 | PHILIPPINES |
质量和可靠性
