Input/Output (I/O) Connector Description
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Figure 1. Top View of LM43603EVM
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Input/Output (I/O) Connector Description
VIN – Terminal on J2—is the power input terminal for the converter. The terminal edge connector also
provides a power (VIN) and ground (GND) connection to allow the user to attach the EVM to a
cable harness.
VOUT – Terminal on J3—is the regulated output voltage for the converter. The terminal edge connector
also provides a power (VOUT) and ground (GND) connection to allow the user to attach the EVM to
a cable harness.
GND – Terminal on J2 and J3—are the ground reference for the converter. The terminal edge connector
also provides a GND connection for attaching the EVM to a cable harness.
EN – Testpoint—is used to enable the converter by supplying a voltage greater than 2.2 V (typ) or just to
monitor the voltage on this pin whenever a resistor divider is in place (for precision enable
applications). The LM43603EVM is built for a precision enable application with resistors RENT and
RENB pre-assembled. The regulator will be enabled when VIN > 3.5 V. This threshold can be
calculated by:
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LM43603EVM User’s Guide
SNVU388–March 2014
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