Specifications

Gate drive
and Clamp
Logic and
Protection
Current Sense/
Current Limit
IN
CL
CS
SOURCE
DRAIN
Output
Clamp
DIAG_EN
GND
Dgnd
Rgnd
NC
(Floating)
ST
VBAT
L
D
Z
MCU
5V
TPS1H100-Q1
www.ti.com SLVSCM2A –OCTOBER 2014–REVISED JANUARY 2014
8.3.4.8 Loss of Power Supply Protection
When loss of supply happens, output is turned off regardless of whether the input is high or low. For a resistive
or capacitive load, loss of supply protection is easy to achieve due to no more power. The worst case is a
charged inductive load. In this case, the current is driven from all of the IOs to maintain the inductance output
loop. TI recommends either the MCU serial resistor plus the GND network (diode and resistor in parallel) or
external free-wheeling circuitry.
Figure 40. Loss of Battery
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