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TPS75105

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具有 PWM 亮度控制功能的 25mA/通道低壓降雙列 LED 驅動器

產品詳情

Number of channels 4 LED current per channel (mA) 25 LED configuration Parallel Program memory No Topology Linear Programmable ramp control No Vin (min) (V) 2.7 Vin (max) (V) 5.5 Iout (max) (A) 0.025 Features Enable/Shutdown, GPIO interface, PWM control, Thermal shutdown Iq (typ) (mA) 0.18 Shutdown current (ISD) (typ) (μA) 0.1 Operating temperature range (°C) -40 to 85 Rating Catalog
Number of channels 4 LED current per channel (mA) 25 LED configuration Parallel Program memory No Topology Linear Programmable ramp control No Vin (min) (V) 2.7 Vin (max) (V) 5.5 Iout (max) (A) 0.025 Features Enable/Shutdown, GPIO interface, PWM control, Thermal shutdown Iq (typ) (mA) 0.18 Shutdown current (ISD) (typ) (μA) 0.1 Operating temperature range (°C) -40 to 85 Rating Catalog
DSBGA (YFF) 9 1.96000000000000028000000000000001 mm2 1.4000000000000001 x 1.4000000000000001 WSON (DSK) 10 6.25 mm2 2.5 x 2.5
  • Regulated Output Current with 2% LED-to-LED Matching
  • Drives Up to Four LEDs at 25 mA Each in a Common Cathode Topology
  • 28-mV Typical Dropout Voltage Extends Usable Supply Range in Li-Ion Battery Applications
  • Brightness Control Using PWM Signals
  • Two 2-LED Banks With Independent Enable and PWM Brightness Control per Bank
  • No Internal Switching Signals—Eliminates EMI
  • Default LED Current Eliminates External Components
    • Default Values from 3 mA to 10 mA (in 1-mA Increments) Available Using Innovative Factory EEPROM Programming
    • Optional External Resistor can be Used for High-Accuracy, User-Programmable Current
  • Over current and Over temperature Protection
  • Available in Wafer Chip-Scale Package
    or 2.50-mm × 2.50-mm WSON-10
  • Regulated Output Current with 2% LED-to-LED Matching
  • Drives Up to Four LEDs at 25 mA Each in a Common Cathode Topology
  • 28-mV Typical Dropout Voltage Extends Usable Supply Range in Li-Ion Battery Applications
  • Brightness Control Using PWM Signals
  • Two 2-LED Banks With Independent Enable and PWM Brightness Control per Bank
  • No Internal Switching Signals—Eliminates EMI
  • Default LED Current Eliminates External Components
    • Default Values from 3 mA to 10 mA (in 1-mA Increments) Available Using Innovative Factory EEPROM Programming
    • Optional External Resistor can be Used for High-Accuracy, User-Programmable Current
  • Over current and Over temperature Protection
  • Available in Wafer Chip-Scale Package
    or 2.50-mm × 2.50-mm WSON-10

The TPS7510x linear low dropout (LDO) matching LED current source is optimized for low-power keypad and navigation pad LED backlighting applications. The device provides a constant current to up to four unmatched LEDs organized in two banks of two LEDs each in a common-cathode topology. Without an external resistor, the current source defaults to a factory-programmable, preset current level with ±0.5% accuracy (typical). An optional external resistor can be used to set initial brightness to user-programmable values with higher accuracy. Brightness can be varied from off to full brightness by inputting a pulse width modulation (PWM) signal on each enable pin (ENx, where x indicates LED bank A or B). Each bank has independent enable and brightness control, but current matching is done to all four channels concurrently. The input supply range is ideally suited for single-cell Li-Ion battery supplies and the TPS7510x can provide up to 25 mA per LED.

No internal switching signals are used, eliminating troublesome electromagnetic interference (EMI). The TPS7510x is offered in an ultra-small, 9-ball, 0.4-mm ball-pitch wafer chip-scale package (WCSP) and a 2.50-mm × 2.50-mm, 10-pin WSON package, yielding a very compact total solution size ideal for mobile handsets and portable backlighting applications. The device is fully specified over TJ = –40°C to +85°C.

The TPS7510x linear low dropout (LDO) matching LED current source is optimized for low-power keypad and navigation pad LED backlighting applications. The device provides a constant current to up to four unmatched LEDs organized in two banks of two LEDs each in a common-cathode topology. Without an external resistor, the current source defaults to a factory-programmable, preset current level with ±0.5% accuracy (typical). An optional external resistor can be used to set initial brightness to user-programmable values with higher accuracy. Brightness can be varied from off to full brightness by inputting a pulse width modulation (PWM) signal on each enable pin (ENx, where x indicates LED bank A or B). Each bank has independent enable and brightness control, but current matching is done to all four channels concurrently. The input supply range is ideally suited for single-cell Li-Ion battery supplies and the TPS7510x can provide up to 25 mA per LED.

No internal switching signals are used, eliminating troublesome electromagnetic interference (EMI). The TPS7510x is offered in an ultra-small, 9-ball, 0.4-mm ball-pitch wafer chip-scale package (WCSP) and a 2.50-mm × 2.50-mm, 10-pin WSON package, yielding a very compact total solution size ideal for mobile handsets and portable backlighting applications. The device is fully specified over TJ = –40°C to +85°C.
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技術文檔

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類型 標題 下載最新的英語版本 日期
* 數據表 TPS7510x Low Dropout, Two-Bank LED Driver With PWM Brightness Control 數據表 (Rev. J) PDF | HTML 2016年 11月 18日
白皮書 常見 LED 功能和 LED 驅動器設計注意事項 英語版 2020年 9月 21日
應用手冊 LDO 噪聲揭秘 (Rev. B) PDF | HTML 英語版 (Rev.B) PDF | HTML 2020年 9月 16日
應用手冊 How to Select a RGB LED Driver 2019年 8月 8日
選擇指南 電源管理指南 2018 (Rev. K) 2018年 7月 31日
選擇指南 電源管理指南 2018 (Rev. R) 2018年 6月 25日
應用手冊 LDO PSRR Measurement Simplified (Rev. A) PDF | HTML 2017年 8月 9日
應用手冊 簡化的 LDO PSRR 測量 最新英語版本 (Rev.A) PDF | HTML 2010年 7月 28日
EVM 用戶指南 TPS75105DSK Evaluation Module (EVM) 2009年 8月 24日
模擬設計期刊 驅動WLED不一定需要4 V電壓 英語版 2008年 8月 14日
模擬設計期刊 LDO 白光 LED 驅動器 TPS7510x 提供令人難以置信的小型解決方案 英語版 2008年 8月 12日
應用手冊 Linear Matched Independent Current Source vs Traditional WLED Driver Solutions 2007年 3月 30日
EVM 用戶指南 TPS75105EVM 2006年 9月 26日

設計和開發

如需其他信息或資源，請點擊以下任一標題進入詳情頁面查看（如有）。

評估板

TPS75105DSKEVM-529 — TPS75105DSKEVM-529 評估模塊

TPS75105DSKEVM-529 評估模塊是一塊完全組裝且經過測試的電路板，用于評估 TPS75105 低壓降 2 組 LED 驅動器。TPS75105DSKEVM-529 可以驅動 4 個 LED（每個 LED 為 5mA 恒流），并由 2.7V 至 5.5V 電源供電。
用戶指南: PDF
TI.com 上無現貨
評估板

TPS75105EVM-174 — TPS75105EVM-174 評估模塊

The TPS75105EVM-174 evaluation module (EVM) helps designers evaluate the operation and performance of the TPS75105 low-dropout linear regulator (LDO), two-bank LED driver withPWM dimming.

用戶指南: PDF
TI.com 上無現貨
模擬工具

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PSpice? for TI 可提供幫助評估模擬電路功能的設計和仿真環境。此功能齊全的設計和仿真套件使用 Cadence? 的模擬分析引擎。PSpice for TI 可免費使用，包括業內超大的模型庫之一，涵蓋我們的模擬和電源產品系列以及精選的模擬行為模型。

借助?PSpice for TI 的設計和仿真環境及其內置的模型庫，您可對復雜的混合信號設計進行仿真。創建完整的終端設備設計和原型解決方案，然后再進行布局和制造，可縮短產品上市時間并降低開發成本。?

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發送申請
封裝 引腳 CAD 符號、封裝和 3D 模型
DSBGA (YFF) 9 Ultra Librarian
WSON (DSK) 10 Ultra Librarian

訂購和質量

包含信息：
  • RoHS
  • REACH
  • 器件標識
  • 引腳鍍層/焊球材料
  • MSL 等級/回流焊峰值溫度
  • MTBF/時基故障估算
  • 材料成分
  • 鑒定摘要
  • 持續可靠性監測
包含信息：
  • 制造廠地點
  • 封裝廠地點

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