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LR2257 |
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| Part Number | LR2257 |
| Manufacturer | LRC |
| 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... |
| 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 Ratings
Item Power Supply
FB Start Voltage
FB Under-voltage Threshold
FB Clamp Voltage FB input current S... |
| Document |
 LR2257 Data Sheet
PDF 395.25KB |
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