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NCP1203 Datasheet

Part Number NCP1203
Manufacturers ON
Logo ON
Description PWM Current-Mode Controller
Datasheet NCP1203 DatasheetNCP1203 Datasheet (PDF)

NCP1203 PWM Current-Mode Controller for Universal Off-Line Supplies Featuring Standby and Short Circuit Protection Housed in SOIC−8 or PDIP−8 package, the NCP1203 represents a major leap toward ultra−compact Switchmode Power Supplies and represents an excellent candidate to replace the UC384X devices. Due to its proprietary SMARTMOS™ Very High Voltage Technology, the circuit allows the implementation of complete off−line AC−DC adapters, battery charger and a high−power SMPS with few external com.

  NCP1203   NCP1203






Part Number NCP1209
Manufacturers ON Semiconductor
Logo ON Semiconductor
Description PWM Voltage Mode Controller
Datasheet NCP1203 DatasheetNCP1209 Datasheet (PDF)

NCP1209 Product Preview PWM Voltage Mode Controller The NCP1209P series is an enhanced version of the MC44608P series. It is a high performance voltage mode controller designed for fly–back SMPS. These 2 series are pin to pin compatible. The device is a Power MOSFET driver offering a discrete approach (controller + discrete MOSFET) for building an offline SMPS. It features a very high efficiency stand–by management consisting in a fully controlled and adaptable Pulsed Mode operation working in c.

  NCP1203   NCP1203







Part Number NCP1207B
Manufacturers ON Semiconductor
Logo ON Semiconductor
Description PWM Controller
Datasheet NCP1203 DatasheetNCP1207B Datasheet (PDF)

DATA SHEET www.onsemi.com PWM Current-Mode Controller for Free Running Quasi-Resonant Operation NCP1207A, NCP1207B The NCP1207A/B 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). Due to its inherent skip cycle capability, the controller enters burst mode as soon as the power demand falls below a predetermined level. As this happens a.

  NCP1203   NCP1203







Part Number NCP1207A
Manufacturers ON Semiconductor
Logo ON Semiconductor
Description PWM Controller
Datasheet NCP1203 DatasheetNCP1207A Datasheet (PDF)

DATA SHEET www.onsemi.com PWM Current-Mode Controller for Free Running Quasi-Resonant Operation NCP1207A, NCP1207B The NCP1207A/B 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). Due to its inherent skip cycle capability, the controller enters burst mode as soon as the power demand falls below a predetermined level. As this happens a.

  NCP1203   NCP1203







Part Number NCP1207
Manufacturers ON Semiconductor
Logo ON Semiconductor
Description PWM Current-Mode Controller
Datasheet NCP1203 DatasheetNCP1207 Datasheet (PDF)

NCP1207 PWM Current−Mode Controller for Free Running Quasi−Resonant Operation The NCP1207 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). Due to its inherent skip cycle capability, the controller enters burst mode as soon as the power demand falls below a predetermined level. As this happens at low peak current, no audible noise can.

  NCP1203   NCP1203







Part Number NCP1205
Manufacturers ON
Logo ON
Description Single Ended PWM Controller
Datasheet NCP1203 DatasheetNCP1205 Datasheet (PDF)

NCP1205 Single Ended PWM Controller Featuring QR Operation and Soft Frequency Foldback The NCP1205 combines a true Current Mode Control modulator and a demagnetization detector to ensure full Discontinuous Conduction Mode in any load/line conditions and minimum drain voltage switching (Quasi--Resonant operation, also called critical conduction operation). With its inherent Variable Frequency Mode (VFM), the controller decreases its operating frequency at constant peak current whenever the outpu.

  NCP1203   NCP1203







PWM Current-Mode Controller

NCP1203 PWM Current-Mode Controller for Universal Off-Line Supplies Featuring Standby and Short Circuit Protection Housed in SOIC−8 or PDIP−8 package, the NCP1203 represents a major leap toward ultra−compact Switchmode Power Supplies and represents an excellent candidate to replace the UC384X devices. Due to its proprietary SMARTMOS™ Very High Voltage Technology, the circuit allows the implementation of complete off−line AC−DC adapters, battery charger and a high−power SMPS with few external components. With an internal structure operating at a fixed 40 kHz, 60 kHz or 100 kHz switching frequency, the controller features a high−voltage startup FET which ensures a clean and loss−less startup sequence. Its current−mode control naturally provides good audio−susceptibility and inherent pulse−by−pulse control. When the current setpoint falls below a given value, e.g. the output power demand diminishes, the IC automatically enters the so−called skip cycle mode and provides improved efficiency at light loads while offering excellent performance in standby conditions. Because this occurs at a user adjustable low peak current, no acoustic noise takes place. The NCP1203 also includes an efficient protective circuitry which, in presence of an output over load condition, disables the output pulses while the device enters a safe burst mode, trying to restart. Once the default has gone, the device auto−recovers. Finally, a temperature shutdown with hysteresis helps building safe and robust .


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