首頁 電源管理 LED 驅動器 照明 LED 驅動器
首頁
電源管理
LED 驅動器
照明 LED 驅動器

LM2754

現行

具超時保護的 800mA 切換式電容器閃光燈 LED 驅動器

立即訂購
產品規格表

LM2754

現行
產品規格表 立即訂購

產品詳細資料

Input voltage type DC/DC Topology Charge pump, current mode Vin (min) (V) 2.8 Vin (max) (V) 5.5 Vout (max) (V) 5.5 Vout (min) (V) 3 Iout (max) (A) 0.8 Iq (typ) (mA) 3.4 Features Enable, True Shutdown Operating temperature range (°C) -40 to 85 Dimming method Analog, PWM Number of channels 4 Rating Catalog
Input voltage type DC/DC Topology Charge pump, current mode Vin (min) (V) 2.8 Vin (max) (V) 5.5 Vout (max) (V) 5.5 Vout (min) (V) 3 Iout (max) (A) 0.8 Iq (typ) (mA) 3.4 Features Enable, True Shutdown Operating temperature range (°C) -40 to 85 Dimming method Analog, PWM Number of channels 4 Rating Catalog
WQFN (RTW) 24 16 mm² 4 x 4
  • Up to 800mA Output Current
  • Wide Operating Input Voltage Range: 2.8V to 5.5V
  • Drives 1, 2, 3 or 4 LEDs in Parallel
  • Ability to Disable One Current Sink Via the SEL Pin to Accommodate 3-LED Flash Modules
  • Time-Out Circuitry Limits Flash Duration to 1 Second
  • TX Input Ensures Synchronization with RF Power Amplifier Pulse
  • Adaptive 1x, 1.5x and 2x Gains for Maximum Efficiency
  • 1MHz Constant Frequency Operation
  • Output Current Limit
  • True Shutdown Output Disconnect
  • <1µA Shutdown Current
  • Internal Soft-Start Limits Inrush Current
  • No Inductor Required
  • Total Solution Size without LED <28mm2
  • Low Profile 24-Pin WQFN Package (4mm x 4mm x 0.8mm)

All trademarks are the property of their respective owners.

  • Up to 800mA Output Current
  • Wide Operating Input Voltage Range: 2.8V to 5.5V
  • Drives 1, 2, 3 or 4 LEDs in Parallel
  • Ability to Disable One Current Sink Via the SEL Pin to Accommodate 3-LED Flash Modules
  • Time-Out Circuitry Limits Flash Duration to 1 Second
  • TX Input Ensures Synchronization with RF Power Amplifier Pulse
  • Adaptive 1x, 1.5x and 2x Gains for Maximum Efficiency
  • 1MHz Constant Frequency Operation
  • Output Current Limit
  • True Shutdown Output Disconnect
  • <1µA Shutdown Current
  • Internal Soft-Start Limits Inrush Current
  • No Inductor Required
  • Total Solution Size without LED <28mm2
  • Low Profile 24-Pin WQFN Package (4mm x 4mm x 0.8mm)

All trademarks are the property of their respective owners.

The LM2754 is an integrated low noise, high current switched capacitor DC/DC converter with four regulated current sinks. The device is optimized for driving 1 to 4 high power white LEDs in parallel with a maximum current of 800mA. Maximum efficiency is achieved over the input voltage range by actively selecting the proper gain based on the LED forward voltage and current requirements.

Two external low power resistors set the desired current for Torch and Flash modes. The TX pin allows the device to be forced into Torch mode during a Flash pulse, allowing for synchronization between the RF power amplifier pulse and Flash/Torch modes. To protect the device and Flash LEDs, internal Time-Out circuitry turns off the LM2754 in case of a faulty prolonged Flash mode. Internal soft-start circuitry limits the amount of inrush current during start-up.

The LM2754 is available in a small 24-pin thermally enhanced WQFN package.

The LM2754 is an integrated low noise, high current switched capacitor DC/DC converter with four regulated current sinks. The device is optimized for driving 1 to 4 high power white LEDs in parallel with a maximum current of 800mA. Maximum efficiency is achieved over the input voltage range by actively selecting the proper gain based on the LED forward voltage and current requirements.

Two external low power resistors set the desired current for Torch and Flash modes. The TX pin allows the device to be forced into Torch mode during a Flash pulse, allowing for synchronization between the RF power amplifier pulse and Flash/Torch modes. To protect the device and Flash LEDs, internal Time-Out circuitry turns off the LM2754 in case of a faulty prolonged Flash mode. Internal soft-start circuitry limits the amount of inrush current during start-up.

The LM2754 is available in a small 24-pin thermally enhanced WQFN package.
filter 尋找其它 照明 LED 驅動器
下載 觀看有字幕稿的影片 影片

技術文件

star =TI 所選的此產品重要文件
找不到結果。請清除您的搜尋條件，然後再試一次。
檢視所有 3
類型 標題 日期
* Data sheet LM2754 800mA Switched Capacitor Flash LED Driver with Time-Out Protection datasheet (Rev. A) 2013年 5月 1日
White paper Common LED Functions and LED Driver Design Considerations 2020年 9月 21日
EVM User's guide AN-1546 LM2754 Evaluation Board (Rev. A) 2013年 4月 30日

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)。

模擬工具

PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
要求
封裝 針腳 CAD 符號、佔位空間與 3D 模型
WQFN (RTW) 24 Ultra Librarian
適用 TI 的評估品項標準條款與條件。

訂購與品質

內含資訊：
  • RoHS
  • REACH
  • 產品標記
  • 鉛塗層/球物料
  • MSL 等級/回焊峰值
  • MTBF/FIT 估算值
  • 材料內容
  • 認證摘要
  • 進行中持續性的可靠性監測
內含資訊：
  • 晶圓廠位置
  • 組裝地點

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