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Getting Started
5 Getting Started
When the LM26480 evaluation board is configured as needed, and has been properly cleaned, supply the
board with power through the GND and AVDD pins. (See Figure 3) .
You should be able to see the regulators supply the desired voltage.
Figure 3. Board Power Pins
6 Using the Evaluation Board
6.1 Enabling the LM26480 Board
The LM26480 evaluation board allows the user to enable the regulators through a jumper, or by applying a
voltage to the regulator’s enable pin.
JP4 and JP5 mark the jumpers for enabling Buck1 and Buck2, respectively. When jumpers are in the
lower position, it shorts the enable pin to GND. Inversely, when the jumpers are in the upper position, the
enable pin is shorted to VDD.
JP7 and JP8 mark the jumpers for enabling LDO2 and LDO1, respectively. When jumpers are in the lower
position, it shorts the enable pin to GND. Inversely, when the jumpers are in the upper position, the enable
pin is shorted to VDD.
If enabling the regulators by applying a voltage to the turret, make sure to remove the jumper for that
specific regulator.
3
SNVA329DMarch 2008Revised April 2013 AN-1800 Evaluation Kit for LM26480 - Dual DC/DC Buck Regulators with
Dual Low-Noise Linear Regulators
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