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User's Guide
SNVA041B–August 2001–Revised April 2013
AN–1203 LM2611 Demo Board
1 Introduction
The LM2611 demo board is a working demonstration of a typical LM2611 Cuk converter layout. This
document contains information about the board. For more information on the LM2611 and Cuk topology,
see the device-specific data sheet.
2 General Description
The LM2611 is typically used in inverting Cuk converter applications. The Cuk converter offers the
advantages of low input and output ripple current and the ability to step up or step down the magnitude of
the input voltage. The NFB pin allows for simple feedback of the negative output voltage. The demo board
is assembled to show a small yet practical layout. The board will operate under the following conditions:
4.5 V ≤ V
IN
≤ 5.5 V
V
OUT
= −5 V
0 ≤ I
OUT
≤ 300 mA
Note: The input capacitor is rated for 6.3 V. Do not apply greater than 5.5 V without first replacing the
input capacitor with one of higher voltage rating (V
IN(MAX)
= 14 V). The input voltage may be as low as 2.7
V, however the maximum load will be lower than 300 mA.
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SNVA041B–August 2001–Revised April 2013 AN–1203 LM2611 Demo Board
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