lm5035csqx National Semiconductor Corporation, lm5035csqx Datasheet - Page 23

• Manufacturer Part Number: lm5035csqx
• Description: Pwm Controller With Integrated Half-bridge And Syncfet Drivers
• Manufacturer: National Semiconductor Corporation

If C
The time t2 provides a periodic cool-down time for the power
converter in the event of a sustained overload or short circuit.
This off time results in lower average input current and lower
SS
= 0.01 µF t3 is
≊
363 µs.
FIGURE 16. Hiccup Over-Load Restart Timing
23
power dissipation within the power components. It is recom-
mended that the ratio of t2 / (t1 + t3) be in the range of 5 to
10 to take advantage of this feature.
If the application requires no delay from the first detection of
a current limit condition to the onset of the hiccup mode (t1 =
0), the RES pin can be left open (no external capacitor). If it
is desired to disable the hiccup mode entirely, the RES pin
should be connected to ground (AGND).
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