LED7708

量産中
Design Win

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

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製品概要

概要

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.

  • 特徴

    • 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

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Displays interactive and annotated schematic
Provides current/voltage graphs, Bode plots, efficiency curves and power-loss data
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Input Specification
Input Specification
V
This option is required. And must be less than or equal to Volt. Max [V]
V
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Output LED
V
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A
This option is required.
Ω
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LEDs
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出力: 0

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品質 & 信頼性

製品型番 マーケティング・ステータス パッケージ グレード RoHSコンプライアンスグレード 材料宣誓書**
LED7708
開発中
VFQFPN 48 7x7x1.0 mm インダストリアル Ecopack2
LED7708TR
量産中
VFQFPN 48 7x7x1.0 mm インダストリアル Ecopack2

LED7708

Package:

VFQFPN 48 7x7x1.0 mm

Material Declaration**:

PDF XML

Marketing Status

開発中

Package

VFQFPN 48 7x7x1.0 mm

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LED7708TR

Package:

VFQFPN 48 7x7x1.0 mm

Material Declaration**:

PDF XML

Marketing Status

量産中

Package

VFQFPN 48 7x7x1.0 mm

Grade

Industrial

RoHS Compliance Grade

Ecopack2

(**) st.comで提供している材料宣誓書は、パッケージ・ファミリ内で最も一般的に使用されているパッケージに基づく汎用ドキュメントの場合があります。そのため、特定の製品では100%正確ではない可能性があります。特定の製品情報については、セールスサポートまでお問い合わせください

サンプル & 購入

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最小
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LED7708TR
Available at distributors

販売代理店在庫 LED7708TR

販売代理店
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LED7708
Available at distributors

販売代理店在庫 LED7708

販売代理店
地域 在庫 最小発注数量 パートナー企業リンク

販売代理店在庫データ:

販売代理店に在庫がない場合は、STのセールス・オフィスまでお問い合わせください

LED7708TR 量産中

Budgetary Price (US$)*/Qty:
-
パッケージ:
梱包タイプ:
RoHS:
Country of Origin:
ECCN (US):
ECCN (EU):

製品型番:

LED7708TR

Operating Temperature (°C)

最小:

最大:

販売代理店

販売代理店在庫データ:

LED7708 開発中

Budgetary Price (US$)*/Qty:
-
パッケージ:
梱包タイプ:
RoHS:
Country of Origin:
ECCN (US):
ECCN (EU):

製品型番:

LED7708

Operating Temperature (°C)

最小:

最大:

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(*)概算用の参考価格(US$)です。現地通貨でのお見積りについては、STのセールス・オフィスまたは販売代理店までお問い合わせください。