TPS61041中文资料采用 SOT-23 封装的 28V、250mA 开关升压转换器，适用于 LCD 和白光 LED 应用数据手册TI规格书

描述 Description

The TPS6104x is a high-frequency boost converter dedicated for small to medium LCD bias supply and white LED backlight supplies. The device is ideal to generate output voltages up to 28 V from a dual-cell NiMH/NiCd or a single-cell Li-Ion battery. The part can also be used to generate standard 3.3-V or 5-V to 12-V power conversions.

The TPS6104x operates with a switching frequency up to 1 MHz. This frequency allows the use of small external components using ceramic as well as tantalum output capacitors. Together with the thin WSON package, the TPS6104x gives a very small overall solution size. The TPS61040 device has an internal 400-mA switch current limit, while the TPS61041 device has a 250-mA switch current limit, offering lower output voltage ripple and allows the use of a smaller form factor inductor for lower power applications. The low quiescent current (typically 28 µA) together with an optimized control scheme, allows device operation at very high efficiencies over the entire load current range.

特性 Features

• 1.8-V to 6-V Input Voltage Range
• Adjustable Output Voltage Range up to 28 V
• 400-mA (TPS61040) and 250-mA (TPS61041) Internal Switch Current
• Up to 1-MHz Switching Frequency
• 28-µA Typical No-Load Quiescent Current
• 1-µA Typical Shutdown Current
• Internal Soft Start
• Available in SOT23-5, TSOT23-5, and 2-mm × 2-mm × 0.8-mm WSON Packages

简介

TPS61041属于集成电路（IC）的LED驱动器。由TI制造生产的TPS61041LED 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。