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
技术特性
- Boost section
- 4.5 V to 36 V input voltage range
- 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 OVP protection
- Stable with ceramic output capacitors
- Backlight driver section
- Six rows with 85 mA maximum current capability (adjustable)
- Less than 10 μs minimum dimming on-time
- ±2 % current matching between rows
- LED failure (open and short-circuit) detection
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功能框图
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LED7707 订购信息
| 订购型号 |
产品状态 |
美金价格 |
数量 |
封装 |
包装形式 |
温度范围 |
材料声明 |
| LED7707TR |
Active |
|
1000 |
VFQFPN 24 4x4x1.0 |
Tape And Reel |
|
|
| LED7707 |
Active |
|
1000 |
VFQFPN 24 4x4x1.0 |
Tube |
|
|
DATASHEET
| 描述 |
版本 |
大小 |
| LED7707 : 6-rows 85 mA LEDs driver with boost regulator for LCD panels backlight |
3 |
1166KB |
APPLICATION NOTES
| 描述 |
版本 |
大小 |
| AN2810: 6-row 85 mA LED driver with boost converter for LCD panel backlighting |
1 |
573KB |
PRODUCT PRESENTATIONS
BOARDS AND TOOLS
| 型号 |
描述 |
| STEVAL-ILL020V1 |
LCD panels backlight demonstration board based on the LED7707 |
