A Premier B2B Part Search
Microchip Technology LR645N3G Linear Regulator
The LR645 from Supertex is a high input voltage, low output current linear regulator designed for off-line SMPS start-up circuits and low power regulators. Capable of accepting input voltages from 15 to 450V, it provides a fixed output of 10V in its three-terminal version and a trim range of 8 to 12V in the adjustable version with external resistors. Suitable for noisy input regulation and applications without galvanic isolation, it features low supply current, high line regulation, and can be enhanced for higher current with external MOSFETs, making it ideal for off-line and auxiliary power source applications.
Microchip Technology LR645N3G Linear Regulator Specifications:
- Input Voltage Range: 15V to 450V
- Output Voltage: Fixed 10V or adjustable 8 to 12V
- Output Current: Up to 3.0mA continuous, 30mA peak; up to 150mA with external MOSFET
- Supply Current: Typically 50μA
- Line Regulation: 0.1mV/V
- Operating Temperature: -55°C to +150°C
- Package Types: TO-92, TO-220, SOT-89, SOIC
- Maximum Input Voltage: 450V
- Maximum Output Voltage: 15.5V
- Power Dissipation (example at 400V input and 3.0mA load): 1.23W
- Ripple Rejection: 50dB minimum at 120Hz
- Leakage Current: Approximately 0.1μA at no load
- External resistors R1 and R2 set the output voltage in adjustable version
- Thermal resistance packages: TO-220 (29°C/W), TO-92 (132°C/W), SOT-89 (133°C/W), SOIC (101°C/W)
Buy the Buy Supertex LR645 Part Number LR645N3G Online
Purchase the Supertex LR645 online and benefit from a versatile high input voltage regulator capable of handling voltages from 15 to 450V. This regulator provides a fixed 10V output or an adjustable range from 8 to 12V, ideal for off-line switch-mode power supply start-up circuits and low power applications. Its low quiescent current, high line regulation, and options for high current with external MOSFETs make it suitable for noisy or ungrounded environments. Order today for dependable, efficient power management solutions.
Order your Supertex LR645N3G high voltage linear regulator today and enhance your off-line power supply projects with reliable start-up and low power regulation.
Frequently Asked Questions
Where can I buy Microchip Technology LR645N3G?
You can click on the BUY or RFQ button to purchase LR645N3G from an authorized Microchip Technology distributor.
How do I troubleshoot issues or seek technical support for part LR645N3G?
You can download the LR645N3G datasheet or visit the Microchip Technology website for support.
Who is the manufacturer of LR645N3G?
Microchip Technology