With a 40-V rated integrated switch FET, the TPS61165 device is a boost converter that drives LEDs in series. The boost converter runs at a 1.2-MHz fixed switching frequency with 1.2-A switch current limit, allowing the use of a high-brightness LED in general lighting.

The default white LED current is set with the external sensor resistor Rset, 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 one-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 TPS61165 device 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 TPS61165 device to prevent the output from exceeding its absolute maximum voltage ratings during open LED conditions.

德克萨斯仪器tps61165drvrwith一40-V额定集成开关FET的TPS61165还装置是一个升压转换器，驱动发光二极管系列。Boost变换器在开关频率固定在1.2-mhz 1,2-a开关电流限制运行，允许一个高亮度LED在普通照明应用。

默认的白色LED电流设置与外部传感器电阻RSET，和反馈电压调节到200 mV，在所示的典型应用。在操作过程中，LED电流可以用单线数字接口控制（easyscale协议）通过CTRL引脚。可替换地，脉冲宽度调制（PWM）信号可应用于通过占空比决定反馈参考电压的Ctrl引脚。无论是数字或PWM模式，该设备不爆TPS61165一样的LED电流；因此，它不产生可听噪声对输出电容器。为最大限度的保护，该设备具有集成LED开路保护，禁用TPS61165还装置以防止输出超过绝对最大额定电压的在LED开路条件。