LP8340中文资料1A、10V、低 IQ、低压降稳压器数据手册TI规格书

描述 Description

The LP8340 low-dropout CMOS linear regulator is available in 5V, 3.3V, 2.5V, 1.8V and adjustable output versions. Packaged in the 6ld WSON package and 3ld PFM. The LP8340 can deliver up to 1.0A output current.Typical dropout voltage is 420mV at 1.0A for the 5.0V version, 540mV at 1.0A for the 3.3V version, 670mV at 1.0A for the 2.5V version and 680mV at 800mA for the 1.8V version.The LP8340 includes a zener trimmed bandgap voltage reference, foldback current limiting and thermal overload limiting.The LP8340 features a PMOS output transistor which unlike PNP type low dropout regulators requires no base drive current. This allows the device ground current to remain less than 50µA over operating temperature, supply voltage and irrespective of the load current.

特性 Features

• ±1.5% Typical VOUT Tolerance
• 420mV Typical Dropout @ 1.0A (VO = 5V)
• Wide Operating Range 2.7V to 10V
• Internal 1.0A PMOS Output Transistor
• 19µA Typical Quiescent Current
• Thermal Overload Limiting
• Foldback Current Limiting
• Zener Trimmed Bandgap Reference
• Space Saving WSON package
• Temperature Range
• LP8340C 0°C to 125°C
• LP8340I −40°C to 125°C

简介

LP8340属于集成电路（IC）的线性+开关稳压器。由TI制造生产的LP8340稳压器 - 线性线性稳压器用于提供稳定的输出电压，无论负载电流、输入电压或环境因素如何变化，这些输出电压通常都要保持不变。它们的工作原理要求输入电压维持在高于所需的输出电压，而且要超出某个最小量，并且在工作时会将输入端的任何多余电压转换为热量。对于大多数应用而言，虽然这种稳压器的效率低于开关模式的稳压器，但它们通常更适合对噪声高度敏感的应用。