LDLN015中文资料150 mA - ultra low noise - high PSRR linear voltage regulator IC数据手册ST规格书

描述 Description

The LDLN015 is an ultra low noise linear regulator which provides 150 mA maximum currentfrom an input voltage ranging from 2.1 V to 5.5 V with a typical dropout voltage of 86mV. With its 6.3 µ VRMS noise value in a band from 10 Hz to 100 kHz, theLDLN015 provides a very clean output suitable for ultra sensitive loads. It is stablewith ceramic capacitors. High PSRR, low quiescent current and very low noise featuresmake it suitable for low power battery powered applications. Power supply rejection ishigher than 90 dB at low frequencies and starts to roll off at 10 kHz. The enable logiccontrol function puts the LDLN015 into shutdown mode allowing a total currentconsumption lower than 1 µA. The device also includes a short-circuit constant currentlimiting and thermal protection. Typical applications are noise sensitive loads likeADC, VCO in mobile phones, and personal digital assistants (PDAs).

特性 Features

• Ultra low noise: 6.3 µVRMS from 10 Hz to 100 kHz
• Input voltage from 2.1 to 5.5 V
• Very low quiescent current (35 µA typ. at no load, 70 µA typ. at 150 mA load; 2 µAmax. in off mode)
• Output voltage tolerance: ± 1% at 25 °C
• 150 mA guaranteed output current
• Wide range of output voltage from 0.8 V to 3.3 V with 100 mV step
• Logic-controlled electronic shutdown
• Compatible with ceramic capacitor (COUT = 0.47 µF)
• No bypass capacitor is required
• Internal current and thermal limit
• Package DFN6 (2 x 2 mm)
• Temperature range: - 40 °C to 125 °C

简介

LDLN015属于集成电路（IC）的线性+开关稳压器。由制造生产的LDLN015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。