Datasheet

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www.ti.com General Operation and Functionality
(1)
Additionally, the SENSE4H input can be used along with V
REF
to monitor negative voltages applied at J5.
The EVM is not configured by default for negative voltage monitoring. In order to use this feature, R10 and
R11 need to be removed and R7, R9, and R12 need to be installed. The values for the resistor dividers
can be calculated using the equations from the data sheet, including the equations for using a windowed
supervisor. The following is an example of setting up a positive and negative supervisor for a -5-V supply
(R
U
is the resistor from V
REF
to SENSE4H, and R
L
is the resistor from SENSE4H to VCC4-):
(2)
4.3 RESET Outputs
The TPS3860xxEVM-736 RESET outputs can be used to reset power supplies or processors when the
power supply voltage drops below the setpoint. They can also be used to sequence power supplies to
avoid violating the maximum voltage ratings of devices. The TPS386000 has open-drain outputs and are
pulled up by 10-kΩ resistors installed as R13–R16 by default on the TPS386000EVM-736. The
TPS386040 has push-pull outputs, and R13–R16 are not installed on the TPS386040EVM-736.
5
SLVU450–March 2011 TPS3860xxEVM-736 Evaluation Modules
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