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TPS61169

現行

TPS61169 38-V 高電流升壓 WLED 驅動器

現在提供此產品的更新版本

open-in-new 比較替代產品
功能相同,但針腳輸出與所比較的裝置不同。
最新 TPS923610 現行 具有 0.1% 比率 PWM 控制類比調光的 24.5V、1.8A 同步升壓 LED 驅動器 Newer Device with market 1st synchronous boost topology
最新 TPS923611 現行 具有 0.1% 比率 PWM 控制類比調光的 30V、1.8A 同步升壓 LED 驅動器 Newer Device with market 1st synchronous boost topology

產品詳細資料

Number of channels 1 Vin (min) (V) 2.7 Vin (max) (V) 5.5 Vout (min) (V) 2.7 Vout (max) (V) 38 Type Inductive Switching frequency (max) (kHz) 1500 Duty cycle (max) (%) 100 LED current per channel (mA) 400 Peak efficiency (%) 90 Topology Boost Features OVP, PWM control Operating temperature range (°C) -40 to 85 Rating Catalog
Number of channels 1 Vin (min) (V) 2.7 Vin (max) (V) 5.5 Vout (min) (V) 2.7 Vout (max) (V) 38 Type Inductive Switching frequency (max) (kHz) 1500 Duty cycle (max) (%) 100 LED current per channel (mA) 400 Peak efficiency (%) 90 Topology Boost Features OVP, PWM control Operating temperature range (°C) -40 to 85 Rating Catalog
SOT-SC70 (DCK) 5 4.2 mm² (2 mm × 2.1 mm)
  • 2.7V to 5.5V input voltage
  • Integrated 40V, 1.8A MOSFET
  • Drives LED string up to 38V
  • 1.2A minimum switch current Limit
  • 1.2MHz switching frequency
  • 204mV reference voltage
  • Internal compensation
  • PWM brightness control
  • Open LED protection
  • Undervoltage protection
  • Built-in soft-start
  • Thermal shutdown
  • Up to 90% efficiency
  • 2.7V to 5.5V input voltage
  • Integrated 40V, 1.8A MOSFET
  • Drives LED string up to 38V
  • 1.2A minimum switch current Limit
  • 1.2MHz switching frequency
  • 204mV reference voltage
  • Internal compensation
  • PWM brightness control
  • Open LED protection
  • Undervoltage protection
  • Built-in soft-start
  • Thermal shutdown
  • Up to 90% efficiency

With a 40V rated integrated switch FET, the TPS61169 is a boost converter that drives LEDs in series. The boost converter has a 40V, 1.8A internal MOSFET with minimum 1.2A current limit; thus it can drive single or parallel LED strings for small- to large-size panel backlighting. The default white LED current is set with the external sensor resistor, RSET, and the feedback voltage is regulated to 204mV, as shown in the Simplified Schematic. During the operation, the LED current can be controlled by using a pulse width modulation (PWM) signal applied to the CTRL pin, through which the duty cycle determines the feedback reference voltage. The TPS61169 does not burst the LED current; therefore, it does not generate audible noises on the output capacitor. For maximum protection, the device features integrated open LED protection that disables the TPS61169 to prevent the output voltage from exceeding the absolute maximum voltage ratings of the device during open LED conditions.

The TPS61169 is available in a space-saving 5-pin SC70 package.

With a 40V rated integrated switch FET, the TPS61169 is a boost converter that drives LEDs in series. The boost converter has a 40V, 1.8A internal MOSFET with minimum 1.2A current limit; thus it can drive single or parallel LED strings for small- to large-size panel backlighting. The default white LED current is set with the external sensor resistor, RSET, and the feedback voltage is regulated to 204mV, as shown in the Simplified Schematic. During the operation, the LED current can be controlled by using a pulse width modulation (PWM) signal applied to the CTRL pin, through which the duty cycle determines the feedback reference voltage. The TPS61169 does not burst the LED current; therefore, it does not generate audible noises on the output capacitor. For maximum protection, the device features integrated open LED protection that disables the TPS61169 to prevent the output voltage from exceeding the absolute maximum voltage ratings of the device during open LED conditions.

The TPS61169 is available in a space-saving 5-pin SC70 package.

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TPS61165 現行 2mm x 2mm QFN 封裝的高亮度白光 LED 驅動器 This product is a high-brightness, single string white LED driver.
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技術文件

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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 TPS61169 38V High Current-Boost WLED Driver With PWM Control datasheet (Rev. B) PDF | HTML 2024/6/16
白皮書 Common LED Functions and LED Driver Design Considerations 2020/9/21
技術文章 Overcoming common design challenges in an UV sterilization box system PDF | HTML 2020/7/27
應用說明 Simple Backlight Driver Dimming Performance 2017/3/20
應用說明 Analog PWM Dimming in White-LED Drivers 2016/12/21
應用說明 Inductor Selection in Boost Converters for LCD Backlight Applications 2016/10/24
應用說明 Schottky Diode Selection in Asynchronous Boost Converters 2016/9/6

設計與開發

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開發板

TPS61169EVM — TPS61169EVM WLED 驅動器評估板

德州儀器 TPS61169EVM 評估模組 (EVM) 有助於設計人員評估 TPS61169 的運作與性能,它是一款 WLED 驅動器,為小型與中型尺寸 LCD 顯示器的單芯鋰離子電池供電背光提供高度整合的解決方案。  此 EVM 專為在 2.7V-5.5V 範圍內的輸入電壓源運作而設計,並為單一串 LED 提供 20mA 輸出電流。

使用指南: PDF
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模擬型號

TPS61169 TINA-TI Reference Design

SNVMBI4.TSC (3026 KB) - TINA-TI 參考設計
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模擬型號

TPS61169 TINA-TI Transient Spice Model

SNVMBI5.ZIP (48 KB) - TINA-TI Spice 模型
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模擬型號

TPS61169 Unencrypted PSpice Transient Model Package (Rev. B)

SNVMAV9B.ZIP (389 KB) - PSpice 模型
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參考設計

TIDA-01579 — 適合成像應用的高效率、低輸出漣波電源供應參考設計

視訊監控系統上的負載點電源樹可利用此參考設計進行最佳化。此參考設計在以下主要參數方面具備高性能:輸出電壓精確度、電壓漣波及散熱。由於電路板面積較小,BOM 成本較低,因此可實現高性能表現。此設計採用視訊門鈴、IP 網路攝影機和無線攝影機中常見的 5-V 電源運作。
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參考設計

TIDA-01586 — 具備日/夜視功能且適用於 IP 網路攝影機的 IR LED 照明與 ICR 控制參考設計

此參考設計展示具備日視與夜視功能且適用於網際網路協定 (IP) 網路攝影機的紅外線 LED 照明子系統。系統配備阻隔濾鏡控制、LED 調光、環境光量測及各 IR LED 串聯電流的鎮流。鎮流是以單串列 LED 驅動器驅動多串列 LED 陣列的替代方案,同時在低光源條件下維持一致照明。OPT3001 環境光感測器 (ALS) 具備精確的可見光量測和良好的 IR 抑制功能,是光二極體、光電電阻器或其他環境光感測器的理想替代方案。
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封裝 針腳 CAD 符號、佔位空間與 3D 模型
SOT-SC70 (DCK) 5 Ultra Librarian

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