SNVU493 – October 2015
Setup
This section describes the connectors on the EVM as well as how to properly connect, set up, and use the
LM8365EVM. Ensure the external power supply is turned off while making connections on the board.
1
Input/Output Connector Description
•
TP1 – VIN is the input power supply.
•
TP2 – RST is the RESEToutput.
•
TP3 – DLY is the positive side of the delay capacitor(s). This can be monitored to observe capacitor
behavior during delay charging/discharging.
•
TP4 – GND is the ground.
2
Header Description
•
J1 is the header that selects the 0.01 µF capacitor for programmable delay.
•
J2 is the header that selects the 0.1 µF capacitor for programmable delay.
•
J3 is the header that selects the 1 µF capacitor for programmable delay.
3
Board Setup
Before applying power to the LM8365EVM, all external connections should be verified. An external power
supply should be turned off and connected with proper polarity to the VIN (TP1) and GND (TP4)
connectors. The input voltage range for the EVM is 1 V to 6 V. The RST (TP2) pin can be used to monitor
the RESET output of the LM8365 in response to various input voltages. The DLY (TP3) terminal provides
a means for observation of the capacitor charging/discharging behavior.
Furthermore, the LM8365EVM allows for programming of the RESET output time delay by selecting from
3 different sized capacitors through the use of headers J1, J2, and J3. These capacitors, labeled C1, C2,
and C3 are 0.01 µF, 0.1 µF, and 1 µF respectively. To select a capacitor, the provided jumper should be
connected to the respective header. If the jumpers are left unpopulated, the EVM will be programmed with
the minimum amount of delay. Multiple capacitors can also be connected in parallel by placing multiple
jumpers.
Once all the connections to the LM8365EVM have been verified, power can be applied to VIN, and
evaluation can begin.
3
SNVU493 – October 2015
Setup
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