TPS61166
- IC Supply Range: 2.5-V to 6-V
- Power Stage Input Range: 4.5-V to 10-V
- Integrated 1.1-A / 20-V Internal Switch FET and Power Diode
- Drive up to 5 LEDs in Series
- Fast on/off LED Current Within 1-µs in Brightness Dimming
- Burst PWM Dimming Method With Frequency Range From 60-Hz to 40-kHz
- Built-in Soft Start-up
- Over Load Protection
- Over Voltage Protection
- 2.5 × 2.5 × 0.8 mm SON Package
- APPLICATIONS
- Small Form Factor LCD Backlight
- Mobile Phone
- Digital Camera
- Personal Camcorder
- Single Lens Reflex
The TPS61166 is a boost converter with a 20-V rated integrated switch FET and power diode that drives up to 5 LEDs in series. This device integrates a high side switch FET that can turn on/off the LED current within 1-µs of the applied external PWM signal. The high side switch also provides input-to-output isolation during IC shutdown.
The default white LED current is set with the external sensor resistor R1, and the feedback voltage is regulated to 200-mV, as shown in the typical application circuit. The LED current can be adjusted using a pulse width modulation (PWM) signal through the PWM pin. The LED current is synchronized to the PWM signal. The device does not discharge the output ceramic capacitor during dimming, thus reducing audible noise when dimming.
Separating the IC input (VIN pin) and power stage input (VBAT pin) makes the device flexible enough to support single- or two-cell Li-ion battery applications. Other protection features include 1.1-A peak-to-peak over current protection (OCP), over voltage protection (OVP), over load protection (OLP), and thermal shutdown. The TPS61166 is available in a 2.5 mm × 2.5 mm SON package with thermal pad.
技术文档
类型 | 标题 | 下载最新的英语版本 | 日期 | |||
---|---|---|---|---|---|---|
* | 数据表 | White LED Driver With Integrated Power Diode and Fast Burst Mode Dimming 数据表 | 2009年 9月 16日 | |||
白皮书 | 常见 LED 功能和 LED 驱动器设计注意事项 | 英语版 | 2020年 9月 21日 | |||
应用手册 | Performing Accurate PFM Mode Efficiency Measurements (Rev. A) | 2018年 12月 11日 | ||||
选择指南 | 电源管理指南 2018 (Rev. K) | 2018年 7月 31日 | ||||
选择指南 | 电源管理指南 2018 (Rev. R) | 2018年 6月 25日 | ||||
应用手册 | How to Use Analog Dimming With TPS6116x | 2011年 8月 5日 | ||||
用户指南 | TPS61166EVM-446 | 2009年 10月 29日 |
设计和开发
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