Text version of the page

NCP1219

However, if the fault lasts for more than 118 ms, then thedriver turns off and the device enters the V The NCP1219 also has an internal temperature shutdowncircuit. If the junction temperature of the controller reaches155

CC

double hiccupmode described earlier. ° C (typical), the driver turns off and the controllerenters double hiccup mode.

4.8 V

Latched and AutoRetry Options

The NCP1219A offers a latched fault circuitry. Anoverload fault condition detected by the controller results in a latchoff shutdown, requiring the controller to be resetby cycling V

FBdisable DrvVFB 3 CC

(removing the ac line input). NCP1219Bprovides an autoretry circuit. All fault conditions except the external latch fault result in the controller entering double hiccup mode, attempting to restart the controller every other V

+
118 ms Fault VSSV
delay SoftstartFB 1 V max CC

cycle, as mentioned earlier.

Figure 42. Block Diagram of TimerBased FaultDetection Table 5. ORDERING INFORMATION

Device Overcurrent Frequency Package Shipping
† NCP1219AD65R2G Latch 65 kHz SOIC7(PbFree) 2500 / Tape & Reel NCP1219BD65R2G AutoRecovery 65 kHz SOIC7(PbFree) 2500 / Tape & Reel NCP1219AD100R2G Latch 100 kHz SOIC7(PbFree) 2500 / Tape & Reel †For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel PackagingSpecifications Brochure, BRD8011/D.

http://onsemi.com

19