TPS61500
- 2.9-V to 18-V Input Voltage Range
- 3-A, 40-V Internal Power Switch
- Four 3-W LEDs From 5-V Input
- Eight 3-W LEDs From 12-V Input
- High-Efficiency Power Conversion: Up to 93%
- Frequency Set by External Resistor: 200 kHz to 2.2 MHz
- User-Defined Soft Start Into Full Load
- Programmable Overvoltage Protection
- Analog and Pure PWM Brightness Dimming
- 14-Pin HTSSOP Package With PowerPAD™
The TPS61500 is a monolithic switching regulator with integrated 3-A, 40-V power switch. It is an ideal driver for high brightness 1-W or 3-W LED. The device has a wide input voltage range to support application with input voltage from multi-cell batteries or regulated 5-V or 12-V power rails.
The LED current is set with an external sensor resistor R3, and the feedback voltage that is regulated to 200 mV by current mode PWM (pulse width modulation) control loop, as shown in Typical Application Circuit. The device supports analog and pure PWM dimming methods for LED brightness control. Connecting a capacitor to the DIMC pin configures the device to be used for analog dimming, and the LED current varies proportional to the duty cycle of an external PWM signal. Floating the DIMC pin configures the device for pure PWM dimming with the average LED current being the PWM signal’s duty cycle times a set LED current.
The device features a programmable soft-start function to limit inrush current during start-up, and it has other built-in protection features, such as pulse-by-pulse overcurrent limit, overvoltage protection, and thermal shutdown. The TPS61500 is available in 14-pin HTSSOP package with PowerPAD.
技術文件
| 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 | TPS61500 High-Brightness, LED Driver With Integrated 3-A, 40-V Power Switch datasheet (Rev. F) | PDF | HTML | 2019/5/30 | ||
| 白皮書 | Common LED Functions and LED Driver Design Considerations | 2020/9/21 | ||||
| 應用說明 | Performing Accurate PFM Mode Efficiency Measurements (Rev. A) | 2018/12/11 | ||||
| 應用說明 | TPS61500 SEPIC Configuration | 2018/4/5 | ||||
| 應用說明 | Extending the Soft Start Time Without a Soft Start Pin (Rev. B) | 2017/6/15 | ||||
| 類比設計期刊 | Design considerations for a resistive feedback divider in a DC/DC converter | 2012/4/26 | ||||
| 應用說明 | Analog Dimming With the TPS61500 Using an Analog Input Signal | 2009/4/30 | ||||
| 更多文件說明 | Seminar 400 Topic 1 - Current-Mode Control of Switching Power Supplies | 2001/2/15 |
設計與開發
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TPS61500EVM-369 — TPS61500EVM-369 評估模組
The TPS61500EVM-369 facilitates evaluation of the TPS61500 High Brightness LED Driver IC.
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| HTSSOP (PWP) | 14 | Ultra Librarian |
訂購與品質
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。