- RS Best.-Nr.:
- 178-4345
- Herst. Teile-Nr.:
- NCP1239KD65R2G
- Marke:
- onsemi
- RS Best.-Nr.:
- 178-4345
- Herst. Teile-Nr.:
- NCP1239KD65R2G
- Marke:
- onsemi
Mehr Infos und technische Dokumente
Rechtliche Anforderungen
- Ursprungsland:
- PH
Produktdetails
The NCP1239 is a fixed-frequency current-mode controller featuring a high-voltage start-up current source to provide a quick and lossless power-on sequence. This function greatly simplifies the design of the auxiliary supply and the VCC capacitor by activating the internal start-up current source to supply the controller during start-up, transients, latch, stand-by etc. With a supply range up to 35 V, the controller hosts a jittered 65 or 100-kHz switching circuitry operated in peak current mode control.
Fixed-Frequency 65-kHz or 100-kHz Current-Mode Control Operation
Frequency Foldback Down to 26 kHz and Skip Mode to Maximize Performance in Light Load Conditions
Adjustable Over Power Protection (OPP) Circuit
High-Voltage Current Source with Brown-Out (BO) Detection
Internal Slope Compensation
Internal Fixed Soft-Start
Frequency Jittering in Normal and Frequency Foldback Modes
64-ms Timer-Based Short-Circuit Protection with Auto-Recovery or Latched Operation
Frequency Foldback Down to 26 kHz and Skip Mode to Maximize Performance in Light Load Conditions
Adjustable Over Power Protection (OPP) Circuit
High-Voltage Current Source with Brown-Out (BO) Detection
Internal Slope Compensation
Internal Fixed Soft-Start
Frequency Jittering in Normal and Frequency Foldback Modes
64-ms Timer-Based Short-Circuit Protection with Auto-Recovery or Latched Operation
Technische Daten
Eigenschaft | Wert |
---|---|
Schaltfrequenz max. | 65 kHz |
Ausgangsspannung | 16 V |
Ausgangsstrom | 500 mA, 500 mA |
Anzahl der Ausgänge | 1 |
Steuerart | Strom |
Abfallzeit | 30ns |
Montage-Typ | SMD |
Anstiegszeit | 40ns |
Gehäusegröße | SOIC |
Topologie | Flyback |
Pinanzahl | 7 |
Abmessungen | 5 x 4 x 1.5mm |
Tastverhältnis max. | 84% |
Länge | 5mm |
PWM Controller-Typ | Strommodus |
Breite | 4mm |
Höhe | 1.5mm |
Betriebstemperatur max. | +150 °C |
Arbeitsspannnung max. | 35 V |