LD57100数据手册集成电路（IC）的线性+开关稳压器规格书PDF

描述 Description

The LD57100 is a high accuracy voltage regulator, which provides 1 A of current. It is equipped with an NMOS pass transistor, whose gate is biased by a dedicated pin, thus allowing the ultra-low drop performance even at very low input voltages.

It is available in Flip Chip6 (0.8x1.2 mm), maximizing the space saving. This device is stabilized with a small ceramic capacitor on the output. The ultra-low drop, low quiescent current and short-circuit protection make the LD57100 suitable for low power battery-operated applications.

An enable logic control function puts the LD57100 in shutdown mode allowing a total current consumption lower than 0.1 µA. Thermal protection is also included.

特性 Features

• Input voltage from VOUT to 5.5 V
• Input bias supply pin from 3.0 V to 5.5 V
• Ultra low-dropout voltage (40 mV typ. at 1 A load)
• Low ground current (35 μA typ. at no load)
• Output voltage tolerance: ±1% all over temperature range, ±0.5% at 25 °C
• 1 A guaranteed output current
• 50 mV output voltage step available from 0.4 V to 1.8 V
• 100 mV output voltage step available from 1.9 V to 3.6 V
• Adjustable version from 0.5 V to 3.0 V
• Logic-controlled electronic shutdown
• Internal current limit
• Thermal shutdown
• Output active discharge function
• Available in Flip Chip6 (0.8x1.2 mm) package
• Temperature range: -40 °C to 85 °C

简介

LD57100属于集成电路（IC）的线性+开关稳压器。由制造生产的LD57100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。