Anterwell Technology Ltd.
Anterwell Technology Ltd.
Large Original stock of IC Electronics Components, Transistors, Diodes etc.
High Quality, Reasonable Price, Fast Delivery.
Anterwell Technology Ltd.
Large Original stock of IC Electronics Components, Transistors, Diodes etc.
High Quality, Reasonable Price, Fast Delivery.
Product Details:
Payment & Shipping Terms:
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| Max Working Temperature: | +125°C | Min Working Temperature: | -40°C |
|---|---|---|---|
| Switching Frequency: | 65 KHz | Current Output: | 500 MA |
| Packing: | Reel | Package: | SOIC-7 |
| VDD POWER: | 28V | Factory Packing Quantity: | 2500 |
| Highlight: | integrated circuit ic,integrated circuit components |
||
NCP1234AD65R2G Fixed Frequency Current Mode Controller for Flyback Converters
Features
Fixed−Frequency Current−Mode Operation with Built−In Ramp Compensation
65 kHz or 100 kHz Oscillator Frequency version
Frequency Foldback then Skip Mode for Maximized Performance in Light Load and Standby Conditions
Timer−Based Overload Protection with Latched (option A) or Auto−Recovery (option B) Operation
High−voltage Current Source with Dynamic Self−Supply, Simplifying the Design of the VCC Capacitor Frequency Modulation for Softened EMI Signature, including during Frequency Foldback mode
Adjustable Overpower Compensation
Latch−off Input for Severe Fault Conditions, Allowing Direct Connection of an NTC for Overtemperature Protection (OTP)
VCC Operation up to 28 V, with Overvoltage Detection 500 mA Peak Source/Sink Current Drive Capability
4.0 ms Soft−Start
Internal Thermal Shutdown
Pin−to−Pin Compatible with the Existing NCP12xx Series
These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS Compliant
Typical Applications
AC−DC Adapters for Notebooks, LCD, and Printers
Offline Battery Chargers
Consumer Electronic Power Supplies
Auxiliary/Housekeeping Power Supplies
PIN FUNCTION DESCRIPTION
| Pin No | Pin Name | Function | Pin Description |
|---|---|---|---|
| 1 | LATCH | Latch−Off Input | Pull the pin up or down to latch−off the controller. An internal current source allows the direct connection of an NTC for over temperature detection |
| 2 | FB | Feedback | An optocoupler collector to ground controls the output regulation. |
| 3 | CS | Current Sense | This Input senses the Primary Current for current−mode operation, and Offers an overpower compensation adjustment. |
| 4 | GND | IC Ground | |
| 5 | DRV | Drive output | Drives external MOSFET |
| 6 | VCC | VCC input | This supply pin accepts up to 28 Vdc, with overvoltage detection |
| 7 | |||
| 8 | HV | High−voltage pin | Connects to the bulk capacitor or the rectified AC line to perform the functions of Start−up Current Source and Dynamic Self−Supply |
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