LR745N8-G
Experience seamless power delivery with our high-input voltage start-up system
Inventory:5,470
- 90-day after-sales guarantee
- 365 Days Quality Guarantee
- Genuine Product Guarantee
- 7*24 hours service quarantee
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Part Number : LR745N8-G
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Package/Case : SOT-89-3
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Manufacturer : MICROCHIP
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Components Classification : Power Management , Specialized
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Datesheet : LR745N8-G DataSheet (PDF)
Overview of LR745N8-G
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.
Key Features
- 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
Specifications
The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.
Product Category | Power Management Specialized - PMIC | RoHS | Details |
Type | Special Purpose | Mounting Style | SMD/SMT |
Package / Case | SOT-89 (TO-243AA) | Output Current | 3 mA |
Input Voltage Range | 35 V to 450 V | Output Voltage Range | 18 V to 24 V |
Minimum Operating Temperature | - 55 C | Maximum Operating Temperature | + 125 C |
Input Current | 500 uA | Brand | Microchip Technology |
Input Voltage, Max | 450 V | Input Voltage, Min | 35 V |
Maximum Output Voltage | 24 V | Product Type | Power Management Specialized - PMIC |
Factory Pack Quantity | 2000 | Subcategory | PMIC - Power Management ICs |
Unit Weight | 0.001827 oz |
Warranty & Returns
Warranty, Returns, and Additional Information
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QA & Return Policy ?
Parts Quality Guarantee: 365 days
Returns for refund: within 90 days
Returns for Exchange: within 90 days
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Shipping and Package ?
Shipping:For example, FedEx, JP, UPS, DHL,SAGAWA, or YTC.
Parts Packaging Guarantee: Featuring 100% ESD anti-static protection, our packaging incorporates high toughness and superior buffering capabilities.
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Payment ?
For example, channels like VISA,MasterCard,Western Union,PayPal,MoneyGram,Rakuten Pay and more.
If you have specific payment channel preferences or requirements, please get in touch with our sales team for assistance.

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LR745N8-G
Experience seamless power delivery with our high-input voltage start-up system
Inventory:
5,470
Warranty & Returns
After Sales Service
What after-sales service can be provided?
We provide an extended quality assurance period of 365 days for all components we offer. If a return or exchange becomes essential, kindly adhere to these guidelines:
·Initiate the request within 90 days after the item's shipment date.
·Coordinate the return or exchange with our team.
·Keep the items in their original condition as delivered.
·Please be aware that the feasibility of returning or exchanging items is contingent upon an evaluation of their actual state upon return.
Shipping
What channels of transportation of goods does the website support?
We usually send out our orders during business days using FedEx, SF, UPS, or DHL. We're also here to assist with alternative shipping options. Should you require additional information about shipping particulars or expenses, please don't hesitate to get in touch with us.







Package
How to ensure that the parts will be intact during transportation?
The items we ship will be packaged in anti-static bags, ensuring ESD anti-static protection, while the outer packaging boasts exceptional durability and sealing. We offer packaging options like Tape and Reel, Cut Tape, Tube, or Tray to suit your needs.




Payment
Which payment methods can be used to pay for goods
Accepted payment methods commonly encompass VISA, MasterCard, UnionPay, Western Union, PayPal, and various other options.
Should you have a particular payment preference or wish to seek information on rates and other specifics, please feel free to reach out to us.




