Microchip LR745N3-G-P003
Manufacturer No:
LR745N3-G-P003
Manufacturer:
Microchip
Package:
TO-226-3, TO-92-3 (TO-226AA)
Description:
SWITCHMODE POWER SUPPLY START-UP IC
Quantity:
In Stock :4921
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Expected Shipping：Mon, Jun 8 - Tue, Jun 9, 2026
Lead Time：Inquire about availability
Date Code：Within 2 Years
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LR745N3-G-P003 Information
Microchip LR745N3-G-P003 technical specifications, attributes, parameters and parts with similar specifications to Microchip LR745N3-G-P003.
- Type
- Parameter
- +Vin min (V)
- 35
- +Vin max (V)
- 450
- Vout min (V)
- 13.9
- Vout max (V)
- 18
- Output Current (mA)
- 3
- Dimming
- N/A
- Parallelable
- N/A
- Package
- SOT-89, TO-92
- Features
- Trimmable Output, Higher Peak Current Capability
- Type
- Parameter
Download datasheets and manufacturer documentation for Microchip LR745N3-G-P003.
Data Sheets:
LR745 is a high input voltage SMPS start-up circuit. The LR745 is ideally suited for use with industry standard low voltage PWM ICs having start thresholds of 13.9 to 18.0V. It allows the PWM ICs to be operated from rectified 120 or 240VAC lines, and eliminates the use of power resistors often used for this purpose.
The internal circuitry of the LR745 allows the PWM ICs to operate at a VCC voltage below their start threshold voltage after start-up. The auxiliary voltage can be less than the start threshold voltage, which allows for improved efficiency.Current from the high voltage line is drawn only during the start-up period. After start-up, the internal high voltage line is disconnected from the IC, thereby reducing the continuous power dissipation to a minimum.
- Accepts inputs from 35 to 450V
- Output current limiting
- For PWM ICs with start-up threshold voltage of 13.9 - 18.0V
- Very low power consumption after start-up
AIChipLink – Your Trusted Electronic Components Distributor
12.28 M
Listed Part Number
3,000+
Leading Manufacturers
4.9 M
In-stock SKU
15,000+
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