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TPS61169

現行

TPS61169 38-V 高電流升壓 WLED 驅動器

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產品規格表

TPS61169

現行
產品規格表 立即訂購

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 x 2.1
  • 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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類型 標題 日期
* Data sheet TPS61169 38V High Current-Boost WLED Driver With PWM Control datasheet (Rev. B) PDF | HTML 2024年 6月 16日
White paper Common LED Functions and LED Driver Design Considerations 2020年 9月 21日
Technical article Overcoming common design challenges in an UV sterilization box system PDF | HTML 2020年 7月 27日
Application note Simple Backlight Driver Dimming Performance 2017年 3月 20日
Application note Analog PWM Dimming in White-LED Drivers 2016年 12月 21日
Application note Inductor Selection in Boost Converters for LCD Backlight Applications 2016年 10月 24日
Application note Schottky Diode Selection in Asynchronous Boost Converters 2016年 9月 6日
User guide Using the TPS61169 Evaluation Module 2014年 11月 11日

設計與開發

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開發板

TPS61169EVM — TPS61169EVM WLED 驅動器評估板

The Texas Instruments TPS61169EVM evaluation module (EVM) helps designers evaluate the operation and performance of the TPS61169, which are WLED driver providing highly integrated solutions for single-cell Li-ion battery powered backlight for small and media form factor LCD display.  The EVM (...)

使用指南: PDF
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模擬型號

TPS61169 TINA-TI Reference Design

SNVMBI4.TSC (3026 KB) - TINA-TI Reference Design
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模擬型號

TPS61169 TINA-TI Transient Spice Model

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

TPS61169 Unencrypted PSpice Transient Model Package (Rev. B)

SNVMAV9B.ZIP (389 KB) - PSpice Model
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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 (...)
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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

The point-of-load power-tree on video surveillance systems is optimized with this reference design. This reference design has a high performance on key parameters such as output voltage accuracy, voltage ripple, and thermal dissipation. This high performance is possible with a small board area and (...)
Design guide: PDF
電路圖: PDF
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

This reference design showcases an Infrared LED illumination sub-system for Internet Protocol (IP) network cameras with day and night vision. The system features a cut filter control, LED dimming, ambient light measuring and ballasting for current of each IR LED string. Ballasting is an (...)
Design guide: PDF
電路圖: PDF
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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