NCP508中文资料Linear Voltage Regulator, LDO, Low Noise, Fast Turn On, 50 mA数据手册ONSEMI规格书

描述 Description

The NCP508 is a 50 mA low noise, low dropout (LDO) linear voltage regulator, designed to exhibit fast turn-on time, low noise and high ripple rejection. The device is robust, incorporating current limiting and temperature protection circuitry. The NCP508 has been designed for use with low cost ceramic capacitors and is housed in an SC-88A or a tiny 1.5x1.5 mm WDFN package. Standard voltage versions are 1.5, 1.8, 2.5, 2.8, 3.0, and 3.3. Other voltages may be available, along with Automotive qualified versions of the device: contact your local sales representative.

特性 Features

• Very Low Noise at 39 uVrms without a Bypass Capacitor
• Suitable for audio or measurement applications
• Fast enable response (20 usec)
• Responds quickly to a turn-on signal
• High Ripple Rejection of 70 dB at 1 kHz
• Provides a clean voltage rail from a battery or noisey supply
• Can use decoupling capacitors with ESR ranging from milliohms to 3 ohms.
• Suitable for cheap ceramic capacitors

应用 Application

• RF Subsystems in Handsets
• Noise sensitive circuits; VCOs, PLL
• Bluetooth headsets
• Meters, Instrumentation

简介

NCP508属于集成电路（IC）的稳压器-线性。由制造生产的NCP508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。