onsemi NCP1378
The NCP1378 combines a true current mode modulator and a demagnetization detector to ensure full borderline/critical Conduction Mode in any load/line conditions and minimum drain voltage switching (Quasi- Resonant operation). The transformer core reset detection is done through an auxiliary winding which, brought via a dedicated pin, also enables fast Over Voltage Protection (OVP). The NCP1378 also features an efficient protective circuitry that, in presence of an overcurrent condition, disables the output pulses and enters a safe burst mode, trying to restart.| Part No. | NCP1378 |
|---|---|
| Datasheet | NCP1378 Download |
| Manufacturer |  onsemi |
| Description | PWM Current-Mode Controller |
| Buy | Stock & Price |
FEATURES
● Free- Running Borderline/Critical Mode Quasi- Resonant Operation● Latched Overvoltage Protection
● Auto- Recovery Short- Circuit Protection Via UVLO Crossover
● Current- Mode with Adjustable Skip Cycle Capability
● Internal 1.0 ms Soft- Start
● Internal Temperature Shutdown
● Internal Leading Edge Blanking
● 500 mA Peak Current Source/Sink Capability
● External Latch Triggering, e.g. Via Overtemperature Signal
● Direct Optocoupler Connection
● SPICE Models Available for TRANsient Analysis
● Internal 8.0 ms Minimum TOFF
● These are Pb- Free Devices* Typical
APPLICATIONS
● Battery- Based Operations *For additional information on our Pb--Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D. 8 1 SOIC- 8 D SUFFIX CASE 751 MARKING DIAGRAMS 8 1378 ALYW G 1 8 1 PDIP- 7 P SUFFIX CASE 626B 1378P AWL YYWWG 1 A L, WL Y, YY W, WW G or G = Assembly Location = Wafer Lot = Year = Work Week = Pb--Free Packag...
