TPS61161A中文资料采用 2mm x 2mm WSON 封装且具有 PWM 亮度控制功能的白光 LED 驱动器，支持多达 10 个串联 LED数据手册TI规格书

描述 Description

With a 40-V rated integrated switch FET, the TPS61160A/61A is a boost converter that drives LEDs in series. The boost converter runs at 600-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 Rset, and the feedback voltage is regulated to 200 mV, as shown in the typical application. During the operation, the LED current can be controlled by a pulse width modulation (PWM) signal applied to the CTRL pin through which the duty cycle determines the feedback reference voltage. In PWM dimming mode, the TPS61160A/61A 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 TPS61160A/61A to prevent the output from exceeding the absolute maximum ratings during open LED conditions. The TPS61160A/61A is available in a space-saving, 2-mm × 2-mm WSON package with thermal pad. For all available packages, see the orderable addendum at the end of the data sheet.

特性 Features

• Input Voltage Range: 2.7 V to 18 V
• 200mV Reference Voltage With ±2% Accuracy
• Built-in Soft Start
• 2-mm × 2-mm × 0.8-mm 6-Pin WSON Package With Thermal Pad

简介

TPS61161A属于集成电路（IC）的LED驱动器。由TI制造生产的TPS61161ALED 驱动器器件属于 LED 驱动器电源管理集成电路 (PMIC) 系列，可通过标称固定电压的电源为负载（通常为发光二极管）提供电流，并且电流可控。它与用于电压调节的类似产品的主要区别在于，这类器件提供较低的反馈电压（以提高系统能效），而且通常可对器件工作点进行外部控制，可在照明应用中用于实现调光功能。