LR645N3-G-P013 More Semiconductors - ICs by Microchip Technology

High Input Voltage SMPS, Start-Up/Linear Regulator


LR645 is a high input voltage, low output current linear regulator. It has a 3-terminal fixed output voltage version available in TO-92, TO-220 and SOT-89 packages, as well as an adjustable voltage version available in an 8-lead SOIC package. 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 start-up 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 8.0 to 12V. This version can also be connected to an external depletion mode MOSFET for increased output current. When used in conjunction with depletion mode MOSFET DN2540N5, an output current of up to 150mA is achieved.

Where to Buy

Prices starting from US$0.52

Distributor Stock
Logo for Newark
Newark
from US$0.57
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Avnet America
from US$0.72
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Microchip Technology
from US$0.52
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RS Americas
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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

Specifications

+Vin min (V) 15
+Vin max (V) 450
Vout min (V) 8.0
Vout max (V) 12
Output Current (mA) 3
Dimming N/A
Parallelable N/A
Package SOT-89, TO-92, TO-220, 8-Ld SOIC
Features Trimmable Output, Higher Peak Current Capability,
Pins | Packaging 3 | TO-92
Temp Range -55C to +150C
Packing Media Ammo Pack (2000)

Environmental Information

JEDEC Indicator e3
ROHS Compliant
China EFUP Compliant
Device Weight (g) 0.2034
Shipping Weight (kg) 0.35
Lead Count 3
Package Type TO-92
Soldering Composition Matte Tin

Alternative Descriptions

Fixed/Adjustable High Input Voltage Regulator 3 To-92 Ammo Rohs Compliant: Yes |Microchip LR645N3-G-P013 | Newark Electronics
Standard Regulator Pos 10V 0.003A 3-Pin TO-92 T/R | Avnet America
FIXED/ADJUSTABLE HIGH INPUT VOLTAGE REGULATOR | Microchip Technology
FIXED/ADJUSTABLE HIGH INPUT VOLTAGE REGULATOR3 TO-92 AMMO | Microchip Technology Inc. LR645N3-G-P013 | RS Americas


Frequently Asked Questions

Where can I find additional details, specifications and documents for a LR645N3-G-P013?

Additional datasheets, footprints and schematics for LR645N3-G-P013 are listed on our Part Details page. You can also find images and similar parts to LR645N3-G-P013 on this page.

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What category does LR645N3-G-P013 fall under?

The LR645N3-G-P013 is listed under Semiconductors - ICs > More Semiconductors - ICs.

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Is the LR645N3-G-P013 RoHS compliant?

Yes. This part has been flagged as RoHS Compliant by Microchip Technology.

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Authorised distributors including Newark Electronics, Avnet America, Microchip Technology and RS Americas have stock available or on a lead time for LR645N3-G-P013.

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