TPS61158
- 2.7-V to 5.5-V Input Voltage Range
- 28-V Open LED Protection (up to 8 LEDs)
- Integrated 0.6-A, 30-V Internal Switch FET and
Power Diode - 750-kHz Switching Frequency
- Flexible Digital and PWM Brightness Control
- 1-Wire Control Interface (EasyScale™)
- PWM Dimming Control Interface
- Up to 100:1 PWM Dimming Ratio
- Integrated Loop Compensation
- Built-in Soft Start
- Built-in WLED Open protection
- Thermal Shutdown
With a 30V-rated integrated switch FET and power diode, the TPS61158 is a boost converter that drives LEDs in series. The boost converter runs at 750-kHz fixed switching frequency to reduce output ripple, improve conversion efficiency, and allows for the use of small external components.
The default white LED current is set with the external sensor resistor RFB, and the feedback voltage is regulated to 200 mV, as shown in Typical Application. During the operation, the LED current can be controlled using the 1-wire digital interface (EasyScale™ protocol) through the CTRL pin. Alternatively, a pulse width modulation (PWM) signal can be applied to the CTRL pin through which the duty cycle determines the feedback reference voltage. In either digital or PWM mode, the TPS61158 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 TPS61158 to prevent the output voltage from exceeding the device absolute maximum voltage ratings during open LED conditions.
技术文档
| 顶层文档 | 类型 | 标题 | 格式选项 | 下载最新的英语版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 数据表 | TPS61158 30-V WLED Driver with Integrated Power Diode 数据表 (Rev. A) | PDF | HTML | 2015-6-18 | ||
| 白皮书 | 常见 LED 功能和 LED 驱动器设计注意事项 | 英语版 | 2020-9-21 | |||
| 应用手册 | Simple Backlight Driver Dimming Performance | 2017-3-20 | ||||
| 应用手册 | Analog PWM Dimming in White-LED Drivers | 2016-12-21 |
设计与开发
如需其他信息或资源，请点击以下任一标题进入详情页面查看（如有）。
SLVC520 — Dimming program for TPS61158EVM-565
| 封装 | 引脚 | CAD 符号、封装和 3D 模型 |
|---|---|---|
| WSON (DRV) | 6 | Ultra Librarian |
订购和质量
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