LT1020CN
发布时间：2018/7/19
概述
The LT1020CN is a combination micropower positive regulator and free collector comparator on a single monolithic chip. With only 40μA supply current, the LT1020CN can supply over 125mA of output current. Input voltage range is from 4.5V to 36V and dropout voltage is 0.6V at 125mA. Dropout voltage decreases with lower load currents. Also included on the chip is a class B output 2.5V reference that can either source or sink current. A dropout detector provides an output current to indicate when the regulator is about to drop out of regulation.
The dual output comparator can be used as a comparator for system or battery monitoring. For example, the comparator can be used to warn of low system voltage while the dropout detector shuts down the system to prevent abnormal operation. Frequency compensation of the comparator for amplifier applications can be obtained by adding external output capacitance. Dual output or positive and negative regulators can also be made.
The 2.5V reference will source or sink current. This allows it to be used as a supply splitter or auxiliary output.
特点
Input Voltage Range: 4.5V to 36V
40μA Supply Current
125mA Output Current
2.5V Reference Voltage
Reference Output Sources 1mA and Sinks 0.5mA
Dual Output Comparator
Comparator Sinks 10mA
Dropout Detector
0.2V Dropout Voltage
Thermal Limiting
Available in SO Package
Applications
Battery Systems
Battery Backup Systems
Portable Terminals
Portable Instruments
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