LR2257 - AC/DC Current Mode PWM

LRC

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Datasheet Details

Part number: LR2257
Manufacturer: LRC
File Size: 395.25 KB
Datasheet: LR2257-LRC.pdf
Description: AC/DC Current Mode PWM

LR2257 Product details

Description

Pin Symbol Pin Description 1 FB Feedback input 2,3 NC Test Pin. 4 VDD Power Supply 5,6 SW Power Transistor output 7,8 GND Ground. Note: Test2 should connect to Test3 while in application 2/9 + - LO HI Working Principle HI HV DC LO 1M GND SW LR2257 12 3 4 PC817A 12 56 7 8.

Features

of over current and over voltage protection mechanisms Delivering up to 3W yet consumes, the typical application of the device will include: z Battery Charger, such as handset phone z Power Adapter z Offline Power Generator z Etc. ¾ Lowest Total Cost Solution ¾ Low Power for Green Environments Protection, as lower as 0.3W ¾ Current Mode PWM ¾ Over-Current Protection, Over and Under-voltage Protection ¾ Emitter Drive of Internal Power Transistor ¾ 65kHz Switching Frequency Absolute Maxim Rating.

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Current Mode PWM LRC

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LR2257 Stock/Price