Datasheet

TPS24700
TPS24701
www.ti.com
SLVSAL3B MARCH 2011 REVISED MAY 2011
Internal control circuits use C
T
to count 16 cycles before re-enabling M1 as shown in Figure 28. This sequence
repeats if the fault persists. The timer has a 1 : 1 charge-to-discharge current ratio. For the very first cycle, the
TIMER pin starts from 0 V and rises to the upper threshold of 1.35 V and subsequently falls to 0.35 V before
restarting. For the following 16 cycles, 0.35 V is used as the lower threshold. This small duty cycle often reduces
the average short-circuit power dissipation to levels associated with normal operation and eliminates special
thermal considerations for surviving a prolonged output short.
Figure 28. Auto-Restart Cycle Timing
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