LT1020 - Micropower Regulator and Comparator

The LT™1020 is a combination micropower positive regulator and free collector comparator on a single monolithic chip. With only 40µA supply current, the LT1020 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
典型应用
LT1020 Typical Application
LT1020 Typical Application
应用
  • Battery Systems
  • Battery Backup Systems
  • Portable Terminals
  • Portable Instruments
封装信息
LT1020 Package Drawing
LT1020 Package Drawing
Order Information 订购型号
器件型号封装温度价格 (以 1 ~ 99 片为批量)价格 (以 1000 片为批量) *
LT1020CN#PBFN-14C$4.58$3.70
LT1020CSW#PBFSW-16C$5.00$4.05
LT1020CSW#TRPBFSW-16C$4.11
LT1020IN#PBFN-14I$5.67$4.60
LT1020ISW#PBFSW-16I$7.08$5.75
LT1020ISW#TRPBFSW-16I$5.81
LT1020MJCERDIP-14M$33.75
数据表
规格变更通知书
应用指南
可靠性数据
CAD 符号
相关产品
LT1020 - Micropower Regulator and Comparator
LT1020 - SPECIFICATION NOTICE - March 1998
AN23 - Micropower Circuits for Signal Conditioning
AN29 - Some Thoughts on DC-DC Converters
AN30 - Switching Regulator Circuit Collection
AN31 - Linear Circuits for Digital Systems
AN32 - High Efficiency Linear Regulators
AN42 - Voltage Reference Circuit Collection
AN58 - 5V to 3.3V Converters for Microprocessor Systems
R086 Reliability Data
LT1020 Footprints and Symbols