NCP4681中文资料NCP4681: Linear Voltage Regulator, LDO, Ultra Low Iq, 150 mA数据手册ONSEMI规格书

描述 Description

The NCP4681 and NCP4684 are CMOS Linear voltage regulators with 150 mA output current capability and ultra low supply currents (1 uA typ.) The devices are easy to use and include output current protection and a fully integrated soft-start circuit to minimize inrush current and to ensure no output voltage overshoot. The NCP4681 includes an ENABLE function to reduce supply current by using a Standby mode, while the NCP4684 excludes the ENABLE pin to avoid the associated pull down current, thereby offering the lowest possible current consumption for battery powered applications in ACTIVE mode. The devices are available in the ultra small 0.8x0.8mm XDFN as well as the SC-70 and SOT23-5 packages.

特性 Features

Ultra Low Supply current : 1 uA typical
Extend the life of battery powered products
Input voltage range 1.4 V to 5.25 V
Extends the useful life of a battery
Enable pin to place device in STANDBY mode (NCP4581)
Reduces Iq to 0.1 uA to minimise power dissipation
Output voltage range: 0.8 V to 3.6 V in 100 mV increments
Suitable for powering low voltage controllers
Tiny 0.8 mm x 0.8 mm x 0.4 mm xDFN package
Convenient alternative to CSP packaging
Soft start
Reduces inrush current and output overshoot

应用 Application

Battery powered boardsKeyboards, touchscreens, LCD screens
Cellphones, Digital Cameras, GPS,

简介

NCP4681属于集成电路（IC）的线性+开关稳压器。由ONSEMI制造生产的NCP4681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。