The LP3997 family are high performance low dropout（ LDO ） voltage regulators with ultra-low quiescent current, high PSRR, fast transient response, and high accuracy. The devices with advanced CMOS process are suitable for many applications that require regulated supplies of up to 300mA load current. The LP3997 family include standard fixed output voltagesof 1.2V, 1.5V, 1.8V, 2.5V, 2.8V, 3.0V, and 3.3V. The devices are stable with a 1.0μF~10μF ceramic output capacitor. The devices are protected from short circuit by a current limit function and from over-heating by a thermal overload protection.The devices are available in standard DFN-4 (1mmx1mm) and SOT23-5 packages.
应用
◆ Wearable devices ◆ Digital cameras ◆ Audio devices ◆ Portable and battery-powered equipment ◆ Post dc-to-dc regulation ◆ Post regulation ◆ Wireless handsets
数据参数
数据参数
输出电流(mA)
300
输出电压(V)
1.2/1.5/1.8/2.5/2.8/3.0/3.3
输入电压(V)
1.6-6.0
电源抑制比(dB)
-65
精度(%)
1.5
导通压差(mV/mA)
180 @ 300
静态电流(uA)
2
特点
Low Quiescent
封装
SOT23-5/DFN4(1*1)
特征
特征
◆ Wide Input Voltage Range: 1.6V to 6.0V ◆ Fixed Output Voltage: 1.2V to 5V ◆ Maximum Load Current Up to 300mA ◆ High PSRR: 65dB@1kHz ◆ Ultra-Low Quiescent Current: 2μA ◆ Low Noise: 60μVRMS typical ◆ Low Dropout Voltage: - 60mV @ 100mA Load, VOUT=3.3V - 180mV @ 300mA Load, VOUT=3.3V ◆ Output Voltage Accuracy: ±1.5% @ 1mA typical ◆ Thermal Shutdown Protection ◆ Excellent Load/Line Transient Response ◆ Line Regulation: 0.02%/V typical ◆ Load Regulation: 20mV typical ◆ Robust ESD capability: - Human Body Model: 4kV - Charged Device Model: 1kV ◆ Package: SOT23-5, DFN1x1-4 ◆ RoHS Compliant and 100% Lead (Pb)-Free
