11/12/2009
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Test Procedure for the CAT4201AGEVB Evaluation Board
Introduction
This document describes the test procedure for the CAT4201 evaluation board. The test
procedure must be followed step-by step in order to verify that the evaluation board is
fully functional.
Test set-up
The CAT4201 evaluation board must have the jumper J1 installed between pins 2 and 3
(right position).
The test set-up uses the LED module plugged into the CAT4201 evaluation board.
The LED current is measured by removing the LED module jumper J2 and connecting
an ammeter (A) between those two pins, see figure below.
V
S
= 12V
I
SUPPLY
= 100mA
+
PS
-
V V = 0.22V
I
LED
= 300mA
A
J2
J1
Pot R2
Legend:
ƒ
(PS) = 12V DC power supply, connected between GND and VBAT
ƒ
(A) = Ammeter, connected to LED module across J2 connector (jumper
removed)
ƒ
(V) = Voltmeter, connected between R1/R2 midpoint and GND
Note: The LED of the LED module is very bright and should be covered for eye
protection.
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