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

TPS60231

現行

採用 3x3 QFN 封裝、用於白光 LED 背光的 3 通道、穩壓電流 75-mA 電荷泵

立即訂購
產品規格表

TPS60231

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) 6.5 Vout (min) (V) 2.7 Vout (max) (V) 6.5 Type Capacitive Switching frequency (max) (kHz) 1250 Duty cycle (max) (%) 100 LED current per channel (mA) 25 Peak efficiency (%) 90 Topology Boost Features Analog Dimming, Analog/PWM mixed dimming, Direct PWM Dimming, Enable/Shutdown, Fault Detection, Integrated Switch, Load Disconnect During Shutdown, Soft Start, Synchronous Rectification, Thermal shutdown Operating temperature range (°C) -40 to 85 Rating Catalog
Number of channels 3 Vin (min) (V) 2.7 Vin (max) (V) 6.5 Vout (min) (V) 2.7 Vout (max) (V) 6.5 Type Capacitive Switching frequency (max) (kHz) 1250 Duty cycle (max) (%) 100 LED current per channel (mA) 25 Peak efficiency (%) 90 Topology Boost Features Analog Dimming, Analog/PWM mixed dimming, Direct PWM Dimming, Enable/Shutdown, Fault Detection, Integrated Switch, Load Disconnect During Shutdown, Soft Start, Synchronous Rectification, Thermal shutdown Operating temperature range (°C) -40 to 85 Rating Catalog
VQFN (RGT) 16 9 mm² 3 x 3
  • Regulated Output Current With 0.4% Matching
  • Drives up to 3 LEDs at 25 mA Each
  • LED Brightness Control Through PWM Control Signal
  • High Efficiency by Fractional Conversion With 1x and 1.5x Modes
  • 1 MHz Switching Frequency
  • 2.7 V to 6.5 V Operating Input Voltage Range
  • Internal Softstart Limits Inrush Current
  • Low Input Ripple and Low EMI
  • Overcurrent and Overtemperature Protected
  • Undervoltage Lockout With Hysteresis
  • Ultra-Small 3mm x 3mm QFN Package
  • APPLICATIONS
    • White LED Backlight for Color Displays in Cellular Phones, Smart Phones, PDAs, Handheld PCs, Digital Cameras, and Camcorders
    • Keypad Backlight
  • Regulated Output Current With 0.4% Matching
  • Drives up to 3 LEDs at 25 mA Each
  • LED Brightness Control Through PWM Control Signal
  • High Efficiency by Fractional Conversion With 1x and 1.5x Modes
  • 1 MHz Switching Frequency
  • 2.7 V to 6.5 V Operating Input Voltage Range
  • Internal Softstart Limits Inrush Current
  • Low Input Ripple and Low EMI
  • Overcurrent and Overtemperature Protected
  • Undervoltage Lockout With Hysteresis
  • Ultra-Small 3mm x 3mm QFN Package
  • APPLICATIONS
    • White LED Backlight for Color Displays in Cellular Phones, Smart Phones, PDAs, Handheld PCs, Digital Cameras, and Camcorders
    • Keypad Backlight

The TPS60231 charge pump is optimized for white LED supplies in color display backlight applications. The device provides a constant current for each LED, which the initial value can be set by an external resistor. The supply voltage ranges from 2.7 V to 6.5 V and is ideally suited for all applications powered by a single LI-Ion battery cell or three to four NiCd, NiMH, or alkaline battery cells. Over an input voltage range from 3.1 V to 6.5 V, the device provides a high output current of up to 25 mA per LED with a total of 75 mA. High efficiency is achieved by utilizing a 1x/1.5x fractional conversion technique in combination with very low dropout current sources. In addition, the current controlled charge pump ensures low input current ripple and EMI. Only two external 1 µF and two 0.47 µF capacitors are required to build a complete small and low cost power supply solution. To reduce board space to a minimum, the device switches at 1 MHz operating frequency and is available in a small 16-pin QFN (RGT) package.

The TPS60231 charge pump is optimized for white LED supplies in color display backlight applications. The device provides a constant current for each LED, which the initial value can be set by an external resistor. The supply voltage ranges from 2.7 V to 6.5 V and is ideally suited for all applications powered by a single LI-Ion battery cell or three to four NiCd, NiMH, or alkaline battery cells. Over an input voltage range from 3.1 V to 6.5 V, the device provides a high output current of up to 25 mA per LED with a total of 75 mA. High efficiency is achieved by utilizing a 1x/1.5x fractional conversion technique in combination with very low dropout current sources. In addition, the current controlled charge pump ensures low input current ripple and EMI. Only two external 1 µF and two 0.47 µF capacitors are required to build a complete small and low cost power supply solution. To reduce board space to a minimum, the device switches at 1 MHz operating frequency and is available in a small 16-pin QFN (RGT) package.
filter 尋找其它 背光 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 6
類型 標題 日期
* Data sheet TPS60231: White LED Charge Pump Current Source With PWM Brightness Control datasheet (Rev. A) 2010年 2月 8日
White paper Common LED Functions and LED Driver Design Considerations 2020年 9月 21日
Application note Performing Accurate PFM Mode Efficiency Measurements (Rev. A) 2018年 12月 11日
Selection guide Power Management Guide 2018 (Rev. R) 2018年 6月 25日
Application note Extending the Soft Start Time Without a Soft Start Pin (Rev. B) 2017年 6月 15日
EVM User's guide TPS60231EVM-047 User's Guide 2004年 10月 13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)。

開發板

TPS60231EVM-047 — TPS60231 評估模組

The Texas Instruments TPS60231EVM-047 evaluation module (EVM) helps designers evaluate the operation and performance of the TPS60231. The TPS60231 is an efficient charge-pump-based current sink that can drive up to three white LEDs with 25mA each.

The EVM is specifically designed and optimized to (...)

使用指南: PDF
TI.com 無法提供
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
VQFN (RGT) 16 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

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