LP55281RLEV National Semiconductor, LP55281RLEV Datasheet - Page 11

• Manufacturer Part Number: LP55281RLEV
• Description: BOARD EVAL FOR LP5528 RGB DRIVER
• Manufacturer: National Semiconductor
• Series: PowerWise®r

Specifications of LP55281RLEV

• Current - Output / Channel: 400mA
• Outputs And Type: 12, Non-Isolated
• Voltage - Output: 5.3V
• Features: USB Interface
• Voltage - Input: 2.7 ~ 5.5V
• Utilized Ic / Part: LP55281
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Getting Started
The following instructions show how to use the LP55281 eval-
uation kit in default conditions with the USB interface board.
Please use the ESD protection (ground cable) to prevent any
unwanted damaging ESD events.
1.
2.
3.
4.
Check the jumpers and switches on the board.
Plug in the evaluation board to the USB board. Connect
the USB cable to the evaluation board and to the USB
port of your PC. When you plug in the USB board for the
first time, your operating system prompts you about “New
hardware found” and installs the USB driver. With Win95
and Win98 operating systems you have to accept the
installation and click “Next” several times as the
installation proceeds.
Copy the evaluation software and the support files to your
PC’s hard disk. Start the software by double-clicking its
icon.
Press Hardware Reset and USB Setup buttons to reset
the chip and the USB interface board.
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5.
6.
You should disconnect the USB cable from the computer al-
ways, when plugging in or removing the evaluation board from
the interface board and also when changing the supply
jumper settings. Otherwise the USB board may stop respond-
ing.
If the USB board is not responding or the software hangs up,
press the reset button on the USB board, or disconnect the
USB cable for 5 seconds.
If the evaluation software notices that the firmware on the
USB board needs to be updated, the software can propose
automatic firmware updating. The new firmware will be in-
cluded in the evaluation kit software.
Turn on the chip and the boost converter by enabling
stand-by and boost.
The Evaluation Kit is now ready to use and the chip can
be controlled through the PC-software.
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