首頁 電源管理 LED 驅動器 背光 LED 驅動器
首頁
電源管理
LED 驅動器
背光 LED 驅動器

LM3697

現行

具有 11 位元指數調光功能的 3 燈串背光驅動器

立即訂購
產品規格表

LM3697

現行
產品規格表 立即訂購

產品詳細資料

Number of channels 3 Vin (min) (V) 2.7 Vin (max) (V) 5.5 Vout (min) (V) 0 Vout (max) (V) 40 Type Inductive Switching frequency (max) (kHz) 1100 Duty cycle (max) (%) 94 LED current per channel (mA) 30 Peak efficiency (%) 91 Topology Boost Features I2C control, OVP, PWM control Operating temperature range (°C) -40 to 125 Rating Catalog
Number of channels 3 Vin (min) (V) 2.7 Vin (max) (V) 5.5 Vout (min) (V) 0 Vout (max) (V) 40 Type Inductive Switching frequency (max) (kHz) 1100 Duty cycle (max) (%) 94 LED current per channel (mA) 30 Peak efficiency (%) 91 Topology Boost Features I2C control, OVP, PWM control Operating temperature range (°C) -40 to 125 Rating Catalog
DSBGA (YFQ) 12 2.52000000000000018 mm² (— mm × — mm)
  • Drives three parallel high-voltage led strings for display and keypad lighting
  • High-voltage strings capable of up to 40-V output voltage and up to 90% efficiency
  • Up to 30 mA per current sink
  • 11-Bit configurable dimming resolution
  • PWM input for content adjustable brightness control (CABC)
  • Fully configurable LED grouping and control
  • Integrated 1-A/40-V MOSFET
  • Adaptive boost output to LED voltages
  • Selectable 500-kHz and 1-MHz switching frequency
  • Four configurable overvoltage protection thresholds (16 V, 24 V, 32 V, and 40 V)
  • Overcurrent protection
  • Thermal shutdown protection
  • 29-mm2 Total solution size
  • Drives three parallel high-voltage led strings for display and keypad lighting
  • High-voltage strings capable of up to 40-V output voltage and up to 90% efficiency
  • Up to 30 mA per current sink
  • 11-Bit configurable dimming resolution
  • PWM input for content adjustable brightness control (CABC)
  • Fully configurable LED grouping and control
  • Integrated 1-A/40-V MOSFET
  • Adaptive boost output to LED voltages
  • Selectable 500-kHz and 1-MHz switching frequency
  • Four configurable overvoltage protection thresholds (16 V, 24 V, 32 V, and 40 V)
  • Overcurrent protection
  • Thermal shutdown protection
  • 29-mm2 Total solution size

The LM3697 11-bit LED driver provides high-performance backlight dimming for 1, 2, or 3 series LED strings while delivering up to 90% efficiency. The boost converter with integrated 1-A, 40-V MOSFET automatically adjusts to LED forward voltage to minimize headroom voltage and effectively improve LED efficiency.

The LM3697 is a high-efficiency three-string power source for backlight or keypad LEDs in smart-phone handsets. The high-voltage inductive boost converter provides the power for three-series LED strings for display backlight and keypad functions (HVLED1, HVLED2, and HVLED3).

An additional feature is a pulse width modulation (PWM) control input for content adjustable backlight control, which can be used to control any high-voltage current sink.

The LM3697 is fully configurable via an I2C-compatible interface. The device operates over a
2.7-V to 5.5-V input voltage range and a −40°C to +85°C temperature range.

The LM3697 11-bit LED driver provides high-performance backlight dimming for 1, 2, or 3 series LED strings while delivering up to 90% efficiency. The boost converter with integrated 1-A, 40-V MOSFET automatically adjusts to LED forward voltage to minimize headroom voltage and effectively improve LED efficiency.

The LM3697 is a high-efficiency three-string power source for backlight or keypad LEDs in smart-phone handsets. The high-voltage inductive boost converter provides the power for three-series LED strings for display backlight and keypad functions (HVLED1, HVLED2, and HVLED3).

An additional feature is a pulse width modulation (PWM) control input for content adjustable backlight control, which can be used to control any high-voltage current sink.

The LM3697 is fully configurable via an I2C-compatible interface. The device operates over a
2.7-V to 5.5-V input voltage range and a −40°C to +85°C temperature range.

filter 尋找其它 背光 LED 驅動器
下載 觀看有字幕稿的影片 影片

您可能會感興趣的類似產品

open-in-new 比較替代產品
功能相似於所比較的產品。
LM36274 現行 具有 LCD 偏壓的整合式背光驅動器 LM3627x is the backlight LED driver integrated with LCD bias

技術文件

找不到結果。請清除您的搜尋條件，然後再試一次。
檢視所有 4
重要文件 類型 標題 格式選項 下載最新的英文版本 日期
* 資料表 LM3697 High-efficiency three-string white LED driver datasheet (Rev. D) PDF | HTML 2019/3/27
應用說明 How to use the LM3697 Device to Design a Backlight Unit in a Smartphone PDF | HTML 2021/4/15
白皮書 Common LED Functions and LED Driver Design Considerations 2020/9/21
應用說明 Analog PWM Dimming in White-LED Drivers 2016/12/21

設計與開發

如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。

開發板

LM3697EVM — 適用於智慧型手機之 LM3697 三燈串白色 LED 驅動器的評估模組

The LM3697 Evaluation Module (LM3697EVM) is designed to fully evaluate the LM3697 Three String backlight driver.  The LM3697EVM consists of the LM3697, 3p10s white LED strings, level shifters and the USB2ANY interface.  The Texas Instruments USB2ANY interface provides the hardware link (...)

使用指南: PDF
支援產品和硬體
有庫存
限制：
??asset.out-of-stock-ti_zh_TW??
無法提供
驅動程式或資料庫

LM3532SW-LINUX — 適用於 LM3532 的 Linux 驅動程式

The Linux driver supports the LMU(Lighting Management Unit) devices for smartphone handsets. The Linux driver supports communication through the I2C bus and interfaces with various sub-systems.

 

Linux Mainline Status

Available in Linux Main line: No
Available through git.ti.com: (...)

支援產品和硬體
開發模組 (EVM) 的 GUI

SNVC095 — LM3697 GUI Software

支援產品和硬體
模擬型號

LM3697 Unencrypted PSpice Transient Model Package (Rev. B)

SNOM463B.ZIP (51 KB) - PSpice 模型
支援產品和硬體
封裝 針腳 CAD 符號、佔位空間與 3D 模型
DSBGA (YFQ) 12 Ultra Librarian
適用 TI 的評估品項標準條款與條件。

訂購與品質

建議產品可能具有與此 TI 產品相關的參數、評估模組或參考設計。

支援與培訓

內含 TI 工程師技術支援的 TI E2E™ 論壇

以英文檢視所有論壇主題

內容係由 TI 和社群貢獻者依「現狀」提供，且不構成 TI 規範。檢視使用條款。

若有關於品質、封裝或訂購 TI 產品的問題，請參閱 TI 支援。​​​​​​​​​​​​​​

影片