Low

MICROCHIP  LR645N8-G  Linear Voltage Regulators, Fixed, 15V To 450V In, 10V And 3mA Out, TO-243AA-3

MICROCHIP LR645N8-G
Technical Data Sheet (978.95KB) EN See all Technical Docs

Image is for illustrative purposes only. Please refer to product description.

Product Overview

The LR645N8-G is a high input voltage low output Current Linear Regulator has a 3-terminal fixed output voltage version. The 3-terminal version functions like any other low voltage 3-terminal regulator except it allows the use of much higher input voltages. When used in a SMPS startup circuit, it eliminates the need for large power resistors. In this application, current is drawn from the high voltage line only during start-up. Only leakage current flows after start-up, thereby reducing the continuous power dissipation to a few milliwatts. The adjustable voltage version allows trimming of the output voltage from 8 to 12V. This version can also be connected to an external depletion mode MOSFET for increased output current. When used in conjunction with Supertex depletion mode MOSFET DN2540N5, an output current of up to 150mA is achieved.
  • Accepts inputs from 15 to 450V
  • Output currents up to 3mA continuous, 30mA peak
  • 50µA Typically supply current
  • 0.1mV/V Typically line regulation
When operated from an AC line, potentially lethal voltages can be present on the IC. Adequate means of protecting the end user from such voltages must be provided by the circuit developer.

Product Information

Output Type:
Fixed
Input Voltage Min:
15V
Input Voltage Max:
450V
Fixed Output Voltage Nom.:
10V
Adjustable Output Voltage Min:
-
Adjustable Output Voltage Max:
-
Output Current:
3mA
Linear Regulator Case Style:
TO-243AA
No. of Pins:
3Pins
Operating Temperature Min:
-55°C
Operating Temperature Max:
150°C
Packaging:
Cut Tape
Product Range:
-
Automotive Qualification Standard:
-
Output Voltage Nom.:
10 V
MSL:
MSL 1 - Unlimited
SVHC:
No SVHC (17-Dec-2015)

Find similar products  grouped by common attribute

Applications

  • Industrial;
  • Power Management;
  • Audio

Legislation and Environmental

Moisture Sensitivity Level:
MSL 1 - Unlimited
Country of Origin:
United States

Country in which last significant manufacturing process was carried out

RoHS Compliant:
Yes
Tariff No:
85423990
Weight (kg):
.000231