LT3050

• Product Introduction

The LT3050 is a 100mA, voltage regulator with accurate current limiting and diagnostics

peculiarity

• 输出电流监视器：I_OUT 的 1/100
• 故障指示器：电流限值、最小 I_OUT 或热限值
• 输出电流：100mA
• 压差电压：340mV
• 输入电压范围：1.6V 至 45V
• 可编程精准电流限值：±5%
• 可编程最小 I_OUT 监视器 
• 低噪声：30μV_RMS (10Hz 至 100kHz)
• 可调输出 (V_REF = V_OUT(MIN) = 0.6V)
• 固定输出电压：3.3V、5V
• 输出容差：±2% (在整个电压、负载和温度范围)
• 可在采用低 ESR 陶瓷输出电容器 (最小电容值为 2.2μF) 时保持稳定
• 停机电流：
• 反向电池、反向输出和反向电流保护功能
• 热限制保护
• 12 引脚 3mm x 2mm DFN 封装和 MSOP 封装

description

®The LT 3050 Series is a low-power, low-noise, low-dropout voltage (LDO) linear regulator. The device provides an output current of 100mA and a dropout voltage of 340mV. A 10nF bypass capacitor reduces output noise to 30μVRMS (within a 10Hz to 100kHz bandwidth) and soft-start the reference. The LT3050's ±45V input voltage rating, along with its precise current limiting and diagnostics, make it an ideal choice for rugged, high-reliability systems.

A single resistor sets the LT3050's current limit and achieves ±5% accuracy over a wide input voltage and temperature range. Utilizing a single resistor to set the LT3050's minimum output current monitor is useful for detecting open circuit conditions. The current monitor function circuit provides a current equal to 1/100th of the output current. If the LT3050 is in a current-limited state, operating below its minimum output current (open-circuit), or in a thermal shutdown state, a logic FAULT pin is determined to be low.

The LT3050 utilizes low ESR ceramic capacitors to optimize stability and transient response, requiring a minimum capacitance of 2.2μF. The LT3050 can be used as an adjustable device with an output voltage range as low as 0.6V reference. The LT3050 is available in a thermally enhanced 12-pin 3mm x 2mm DFN and MSOP package.

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