MAX8740 Maxim Integrated Products, MAX8740 Datasheet - Page 11

• Manufacturer Part Number: MAX8740
• Description: TFT-LCD Step-Up DC-DC Converter
• Manufacturer: Maxim Integrated Products

3) Place the feedback voltage-divider-resistors as
4) Place the IN pin bypass capacitor as close to the
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close to the FB pin as possible. The divider’s center
trace should be kept short. Placing the resistors far
away causes the FB trace to become an antenna
that can pick up switching noise. Avoid running the
feedback trace near LX.
device as possible. The ground connection of the
IN bypass capacitor should be connected directly
to GND pins with a wide trace.
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TFT-LCD Step-Up DC-DC Converter
5) Minimize the length and maximize the width of the
6) Minimize the size of the LX node while keeping it
Refer to the MAX8740 evaluation kit for an example of
proper board layout.
TRANSISTOR COUNT: 2746
PROCESS: BiCMOS
traces between the output capacitors and the load
for best transient responses.
wide and short. Keep the LX node away from the
feedback node and analog ground. Use DC traces
as a shield if necessary.
Chip Information
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