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LR745N8-G

Experience seamless power delivery with our high-input voltage start-up system

Inventory:5,470

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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

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Warranty, Returns, and Additional Information

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LR745N8-G

Experience seamless power delivery with our high-input voltage start-up system

Inventory:

5,470