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LR645

Part Number	LR645
Manufacturer	Microchip
Description	High-Input Voltage SMPS Start-up/Linear Regulator
Published	Feb 10, 2017
Detailed Description	LR645 High-Input Voltage SMPS, Start-up/Linear Regulator Features • Accepts inputs from 15 to 450V • Output currents: u...
Datasheet	LR645 PDF File

Overview

LR645 High-Input Voltage SMPS, Start-up/Linear Regulator Features • Accepts inputs from 15 to 450V • Output currents: up to 3.
0mA continuous, 30mA peak • Supply current typically 50µA • Line regulation typically 0.
1mV/V • Output can be trimmed from 8.
0 to 12V • Output current can be increased to 150mA with external FET Applications • Off-line SMPS startup circuits (pulse loads) • Low power off-line regulators • Regulators for noisy inputs Description LR645 is a high-input voltage, low-output current, linear regulator that is available in two versions.
A 3-terminal, fixed-output voltage version is available in TO-92, TO220 and SOT-89 packages, as well as an adjustable voltage version availa...

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