onsemi NCP4302
The NCP4302 is a full featured controller and driver that provide all the control and protection functions necessary for implementing a synchronous rectifier operation in a flyback converter. With the use of the NCP4302, the space conscious flyback applications such as Adaptors, chargers, set top boxes can achieve significant efficiency improvements at minimal extra cost. The NCP4302 works with any type of flyback topology (continuous mode, Quasi−resonant mode or discontinuous mode) – providing a high level of versatility.| Part No. | NCP4302 |
|---|---|
| Datasheet | NCP4302 Download |
| Manufacturer |  onsemi |
| Description | Synchronous Rectification Controller |
| Buy | Stock & Price |
FEATURES
● Self−contained Control of Synchronous Rectifier in CCM, DCM, and QR FlybackAPPLICATIONS
● Interface to External Signal for CCM Mode● True Secondary Zero Current Detection
● High Gate Drive Currents (2.5 A Source/Sink)
● High Voltage Operation
● Current Sense Flexibility (MOSFET RDS(on) OR CS Resistor)
● Accurate Low Voltage Reference − NCP4302A 2.55 V, 1% − NCP4302B 1.275 V, 1%
● Programmable Independent Secondary Side ton and toff Delays
● Maximum Frequency of Operation up to 250 kHz
● These are Pb−Free Devices Typical
APPLICATIONS
● Notebook Adapters● LCD TV Adapters
● Consumer Appliances such as DVD, VCR
● Power Over Ethernet
APPLICATIONS
(IP phones, Wireless Access Points)● Battery Chargers 8 1 x A L Y W G SO−8 D SUFFIX CASE 751 MARKING DIAGRAM 8 4302x ALYW G 1 = Reference Voltage (A or B) = Assembly Location = Wafer Lot = Year = Work Week = Pb−Free Package PIN CONFIGURATION SYNC/CS 1 TRIG 2 CATH 3 VREF 4 8 VCC 7 DRV 6 GND 5 DLYADJ (Top View) ORDERING INFORMATION Dev...
