NCP1246 데이터 시트보기 (PDF) - ON Semiconductor

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NCP1246

Fixed Frequency Current Mode Controller for Flyback Converters

ON Semiconductor 

VCC(on)

VCC(min)

NCP1246

Figure 71. Latch Timing Diagram

Temperature Shutdown

The NCP1246 includes a temperature shutdown

protection with a trip point typically at 150°C and the typical

hysteresis of 30°C. When the temperature rises above the

high threshold, the controller stops switching

instantaneously, and goes to the off mode with extremely

low power consumption. There is kept the VCC supply to

keep the TSD information. When the temperature falls

below the low threshold, the startïup of the device is enabled

again, and a regular startïup sequence takes place. See the

status diagrams at the Figures 46 and 47.

ORDERING INFORMATION

Ordering Part No.

Overload Protection

Switching Frequency

Package

Shipping†

NCP1246A65DR2G

Latched

65 kHz

SOICï7

(PbïFree)

2500 / Tape & Reel

NCP1246B65DR2G

Autorecovery

65 kHz

SOICï7

(PbïFree)

2500 / Tape & Reel

NCP1246A100DR2G

Latched

100 kHz

SOICï7

(PbïFree)

2500 / Tape & Reel

NCP1246B100DR2G

Autorecovery

100 kHz

SOICï7

(PbïFree)

2500 / Tape & Reel

†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging

Specifications Brochure, BRD8011/D.

http://onsemi.com

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