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.

    主要特性

    • 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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LED7708TR
Active
1000 1.591 VFQFPN 48 7x7x1.0 Tape And Reel -40 150 EAR99
MORE INFO

Country of Origin:

PHILIPPINES

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Distributor availability ofLED7708TR

代理商名称
地区 库存 最小订购量 Third party link
DIGIKEY WORLDWIDE 1554 1 Order Now
MOUSER WORLDWIDE 3838 1 Order Now

代理商库存报告日期: 2019-05-20

代理商名称

DIGIKEY

库存

1554

Min.Order

1

地区

WORLDWIDE Order Now

MOUSER

库存

3838

Min.Order

1

地区

WORLDWIDE Order Now

代理商库存报告日期: 2019-05-20

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LED7708
Preview
1000 1.591 VFQFPN 48 7x7x1.0 Tray -40 150 EAR99
MORE INFO

Country of Origin:

-

No availability of distributors reported, please contact our sales office

LED7708TR

Marketing Status

Active

Quantity

1000

Unit Price (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 1554 1 Order Now
MOUSER WORLDWIDE 3838 1 Order Now

代理商库存报告日期: 2019-05-20

代理商名称

DIGIKEY

库存

1554

Min.Order

1

地区

WORLDWIDE Order Now

MOUSER

库存

3838

Min.Order

1

地区

WORLDWIDE Order Now

代理商库存报告日期: 2019-05-20

Unit Price (US$)

1.591

Package

VFQFPN 48 7x7x1.0

Packing Type

Tape And Reel

Operating Temperature (°C)

(min)

-40

(max)

150

ECCN (US)

EAR99

Country of Origin

PHILIPPINES

LED7708

Marketing Status

Preview

Quantity

1000

Unit Price (US$)

1.591*

Unit Price (US$)

1.591

Package

VFQFPN 48 7x7x1.0

Packing Type

Tray

Operating Temperature (°C)

(min)

-40

(max)

150

ECCN (US)

EAR99

Country of Origin

-

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors

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    • Description 版本 文档大小 Action
      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

出版刊物和宣传资料

    • Description 版本 文档大小 Action
      电源管理 2017版指南 09.2017
      4.42 MB
      PDF
      LED drivers for backlighting and lighting applications 2.1
      1.78 MB
      PDF

      电源管理 2017版指南

      LED drivers for backlighting and lighting applications

型号 Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
LED7708
Preview
VFQFPN 48 7x7x1.0 工业 Ecopack2
LED7708TR
Active
VFQFPN 48 7x7x1.0 工业 Ecopack2

LED7708

Package:

VFQFPN 48 7x7x1.0

Material Declaration**:

PDF XML

Marketing Status

Preview

Package

VFQFPN 48 7x7x1.0

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LED7708TR

Package:

VFQFPN 48 7x7x1.0

Material Declaration**:

PDF XML

Marketing Status

Active

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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