DAP6A Datasheet PDF – PWM Controller

Part Number: DAP6A ( = NCP1200 )

Function: PWM Controller, Fixed Frequency, Flyback, Current Mode

Package: SOP 8 Pin Type

Manufacturer: ON Semiconductor


DAP6A PWM Controller


Housed in SO-8 or DIP-8 package, the DAP6A represents a major leap toward ultra-compact Switch-Mode Power Supplies. Thanks to a novel concept, the circuit allows the implementation of a complete offline battery charger or a standby SMPS with few external components. Furthermore, an integrated output short-circuit protection lets the designer build an extremely low-cost AC/DC wall adapter associated with a simplified feedback scheme.

With an internal structure operating at a fixed 40 kHz, 60 kHz or 100 kHz, the controller drives low gate-charge switching devices like an IGBT or a MOSFET thus requiring a very small operating power. Thanks to current-mode control, the NCP1200 drastically simplifies the design of reliable and cheap offline converters with excellent audio- susceptibility and inherent pulse-by-pulse control.


1. No Auxiliary Winding Operation

2. Internal Output Short-Circuit Protection

3. Extremely Low No-Load Standby Power

4. Current-Mode with Skip-Cycle Capability

5. Internal Leading Edge Blanking

6. 250 mA Peak Current Source/Sink Capability

7. Internally Fixed Frequency at 40 kHz, 60 kHz and 100 kHz

8. Direct Optocoupler Connection

9. Built-in Frequency Jittering for Lower EMI

DAP6A datasheet pinout

1. AC/DC Adapters
2. Offline Battery Chargers
3. Auxiliary/Ancillary Power Supplies (USB, Appliances, TVs, etc.)

Other data sheets are available within the file: DAP008

DAP6A Datasheet PDF Download