16 channels x 85 mA LED driver with boost controller and 4-wire serial interface

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  • The LED7708 has been specifically designed to supply several LEDs starting from a single low-voltage rail. It integrates a boost controller, sixteen current generators and a 4-wire serial interface. The boost controller regulates the output voltage in an adaptive way, according to the LED requirements, resulting in an improved overall efficiency. All the current generators are 40 V-rated, allowing the LED7708 to drive several LEDs in series on each channel. The channels can be put in parallel for higher output current.

    The brightness of the LEDs is controlled by using the serial interface. A selectable 12-bit or 16-bit grayscale brightness control allows independent PWM on each channel. A programmable on-chip dimming oscillator is provided for external circuitry simplification. The device has dedicated pins to lock to an external synchronization with other devices (master or slave) for noise reduction in multi-device applications. The LED7708 implements basic protection (OVP, OCP and thermal shutdown) as well as LED array protection. It can detect and manage open-LED and shorted-LED faults and different fault-management options are available in order to cover most application needs.

    Key Features

    • Boost controller section
      • 3.6 V to 36 V input voltage range (LDO)
      • Adaptive output voltage for high efficiency
      • Internal +5 V LDO for gate driver supply
      • Internal +3.3 V LDO for device supply
      • High performance external MOSFET driver
      • 250 kHz to 1 MHz switching frequency
      • Programmable OV and OC protection
      • Fixed frequency peak current-mode control
      • External synchronization for multi-device application
      • Overtemperature alert and thermal shutdown
    • LED array driver section
      • 16 channels with 85 mA/ch current capability
      • ±2% channel current accuracy
      • ±2% channel-to-channel current matching
      • LED short-circuit and open channel fault detection and management
      • 4-wire, 30 MHz serial interface
      • 16 x16-bit, 1x256-bit or 1x192-bit serial data formats
      • Grouped or independent channel PWM control
      • Selectable 12/16-bit grayscale brightness control for local dimming
      • Programmable internal dimming oscillator
      • Programmable grayscale latency
      • Master/slave chain configuration supported

样片和购买

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max
LED7708TR
批量生产
10000 1.591 VFQFPN 48 7x7x1.0 Tape And Reel -40 150 EAR99
更多信息

Country of Origin:

PHILIPPINES

查看供货情况

Distributor availability ofLED7708TR

代理商名称
地区 库存 最小订购量 Third party link
DIGIKEY WORLDWIDE 1542 1 Order Now
FUTURE WORLDWIDE 2500 2500 Order Now
MOUSER WORLDWIDE 2280 1 Order Now
Farnell Element14 EUROPE 2350 1 Order Now

代理商库存报告日期: 2019-11-19

代理商名称

DIGIKEY

库存

1542

Min.Order

1

地区

WORLDWIDE Order Now

FUTURE

库存

2500

Min.Order

2500

地区

WORLDWIDE Order Now

MOUSER

库存

2280

Min.Order

1

地区

WORLDWIDE Order Now

Farnell Element14

库存

2350

Min.Order

1

地区

EUROPE Order Now

代理商库存报告日期: 2019-11-19

获取样片
LED7708
预览
10000 1.591 VFQFPN 48 7x7x1.0 Tray -40 150 EAR99
更多信息

Country of Origin:

-

没有经销商,请联系我们的销售办事处

LED7708TR

供货状态

批量生产

数量

10000

单价(US$)

1.591*

Distributor availability ofLED7708TR

代理商名称
地区 库存 最小订购量 Third party link
DIGIKEY WORLDWIDE 1542 1 Order Now
FUTURE WORLDWIDE 2500 2500 Order Now
MOUSER WORLDWIDE 2280 1 Order Now
Farnell Element14 EUROPE 2350 1 Order Now

代理商库存报告日期: 2019-11-19

代理商名称

DIGIKEY

库存

1542

Min.Order

1

地区

WORLDWIDE Order Now

FUTURE

库存

2500

Min.Order

2500

地区

WORLDWIDE Order Now

MOUSER

库存

2280

Min.Order

1

地区

WORLDWIDE Order Now

Farnell Element14

库存

2350

Min.Order

1

地区

EUROPE Order Now

代理商库存报告日期: 2019-11-19

单价(US$)

1.591

封装

VFQFPN 48 7x7x1.0

包装类型

Tape And Reel

Operating Temperature (°C)

(min)

-40

(max)

150

ECCN (US)

EAR99

Country of Origin

PHILIPPINES

LED7708

供货状态

预览

数量

10000

单价(US$)

1.591*

单价(US$)

1.591

封装

VFQFPN 48 7x7x1.0

包装类型

Tray

Operating Temperature (°C)

(min)

-40

(max)

150

ECCN (US)

EAR99

Country of Origin

-

(*) 建议转售单价(美元)仅用于预算用途。如需以当地货币计价的报价,请联系您当地的 ST销售办事处 或我们的 经销商

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    • 产品型号

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00 选择要下载的文档

技术文档

    • 描述 版本 文档大小 操作
      DS8850
      16 channels x 85 mA LED driver with boost controller and 4-wire serial interface
      1.0
      855.41 KB
      PDF
      DS8850

      16 channels x 85 mA LED driver with boost controller and 4-wire serial interface

    • 描述 版本 文档大小 操作
      AN4578
      16-channels LED driver with independent PWM dimming control based on LED7708
      2.0
      2.38 MB
      PDF
      AN4578

      16-channels LED driver with independent PWM dimming control based on LED7708

出版刊物和宣传资料

    • 描述 版本 文档大小 操作
      LED drivers for backlighting and lighting applications 2.1
      1.78 MB
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      LED drivers for backlighting and lighting applications

产品型号 供货状态 封装 等级规格 符合RoHS级别 Material Declaration**
LED7708
预览
VFQFPN 48 7x7x1.0 工业 Ecopack2
LED7708TR
批量生产
VFQFPN 48 7x7x1.0 工业 Ecopack2

LED7708

Package:

VFQFPN 48 7x7x1.0

Material Declaration**:

PDF XML

Marketing Status

预览

Package

VFQFPN 48 7x7x1.0

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LED7708TR

Package:

VFQFPN 48 7x7x1.0

Material Declaration**:

PDF XML

Marketing Status

批量生产

Package

VFQFPN 48 7x7x1.0

Grade

Industrial

RoHS Compliance Grade

Ecopack2

(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.

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