LD39030SJ中文资料300 mA low quiescent current soft-start, low noise voltage regulator数据手册ST规格书

描述 Description

The LD39030SJ is a low noise voltage regulator that provides 300 mA maximum current from an input voltage in the 1.5 V to 5.5 V range, with a typical dropout voltage of 200 mV. It is stabilized with a ceramic capacitor on the output. The ultra low drop voltage, low quiescent current, and low noise features make it suitable for low power battery-powered applications. Power supply rejection is typically 62 dB at low frequencies and starts to roll off at 10 kHz. An enable logic control function puts the LD39030SJ in shutdown mode allowing a total current consumption lower than 1 μA. The device also includes a short-circuit constant current limiting and thermal protection.

特性 Features

• Input voltage from 1.5 to 5.5 V
• Ultra low dropout voltage (200 mV typ. at 300 mA load)
• Very low quiescent current (20 μA typ. at no load, 40 μA typ. at 300 mA load, 1 μA max. in off mode)
• Very low noise (30 μVRMSfrom 1 kHz to 100 kHz at VOUT= 1.8 V)
• Output voltage tolerance: ± 2.0 % @ 25 °C
• 300 mA guaranteed output current
• Wide range of output voltages available on request: 0.8 V to 4.5 V with 100 mV step
• Logic-controlled electronic shutdown
• Compatible with ceramic capacitor COUT = 1 μF
• Internal current and thermal limit
• Flip-chip 4 bumps 0.8 x 0.8 mm pitch 0.4 mm
• Internal soft-start (typ. 100 μs)
• Temperature range: - 40 °C to 125 °C

简介

LD39030SJ属于集成电路（IC）的线性+开关稳压器。由制造生产的LD39030SJ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。