产品概要
描述
The ALED7707 device consists of an automotive grade (AEC Q100 compliant) monolithic boost converter and six controlled current generators (rows) specifically designed to supply LED 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 overvoltage, internal MOSFET overcurrent and thermal shutdown) are provided.
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性能一览
- AEC-Q100 qualification
- 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 85 mA maximum current capability (adjustable)
- Rows disable option
- Less than 10 μs minimum dimming on-time
- ± 3% current matching between rows
- LED failure (open and short-circuit) detection
特别推荐
EDA Symbols, Footprints and 3D Models
STMicroelectronics - ALED7707
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Quality and Reliability
| Part Number | Marketing Status | Package | Grade | 符合RoHS级别 | Longevity Commitment | Longevity Starting Date | Material Declaration** |
|---|---|---|---|---|---|---|---|
| ALED7707 | Active 产品已量产 | VFQFPN 24 5x5x1.0 | Automotive | Ecopack2 | - | - | |
| ALED7707TR | Active 产品已量产 | VFQFPN 24 5x5x1.0 | Automotive | Ecopack2 | - | - |
(**) st.com上提供的材料声明表单可能是基于包装系列中最常用的封装的通用文档。因此，它们可能不是100%适用于特定的设备。有关特定设备的信息，请联系 销售支持。
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Sample & Buy
| Part Number | 供货状态 | Budgetary Price (US$)*/Qty | 从ST订购 | Order from distributors | Package | Packing Type | RoHS | Country of Origin | ECCN (US) | ECCN (EU) | Operating temperature (°C) | Operating Temperature (°C) (max) | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 最小值 | 最大值 | |||||||||||||
| ALED7707 | | | distributors 无法联系到经销商，请联系我们的销售办事处 | |||||||||||
| ALED7707TR | | | distributors 无法联系到经销商，请联系我们的销售办事处 | |||||||||||
ALED7707 Active
ALED7707TR Active