NCP1244 Datasheet, PDF (39/40 Pages) ON Semiconductor – Fixed Frequency Current Mode Controller

V_CC(on)
V_CC(min)
NCP1244
Figure 70. Latch Timing Diagram
Temperature Shutdown
The NCP1244 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 V_CC supply to
keep the TSD information. When the temperature falls
below the low threshold, the start−up of the device is enabled
again, and a regular start−up sequence takes place. See the
status diagrams at the Figures 44 and 45.
ORDERING INFORMATION 5
Ordering Part No.
Overload Protection
Switching Frequency
Package
Shipping^†
NCP1244AD065R2G
Latched
65 kHz
SOIC−7
(Pb−Free)
2500 / Tape & Reel
NCP1244BD065R2G
Autorecovery
65 kHz
SOIC−7
(Pb−Free)
2500 / Tape & Reel
NCP1244AD100R2G
Latched
100 kHz
SOIC−7
(Pb−Free)
2500 / Tape & Reel
NCP1244BD100R2G
Autorecovery
100 kHz
SOIC−7
(Pb−Free)
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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