LP5522TMEV National Semiconductor, LP5522TMEV Datasheet - Page 2

• Manufacturer Part Number: LP5522TMEV
• Description: BOARD EVAL LP5522 LED DRIVER
• Manufacturer: National Semiconductor
• Series: PowerWise®r

Specifications of LP5522TMEV

• Current - Output / Channel: 20mA
• Outputs And Type: 1, Non-Isolated
• Features: USB Interface
• Voltage - Input: 2.7 ~ 5.5V
• Utilized Ic / Part: LP5522
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Output: -

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Evaluation Software
LP5522 evaluation software (LP5522.exe) is supplied on the
delivery CD together with all available documentation regard-
ing the circuit. Copy the LP5522.exe an the usblptio.dll to your
PC’s hard disk. The usblptio.dll needs to be in the same di-
rectory as the evaluation software. The software is run by
double clicking its icon. The software does not require any
installation
User interface of the evaluation software is shown on Figure
2. All functions of the chip are controlled from the user inter-
face. Mode field shows the current operation mode of the chip.
Trained field indicates is there a blinking sequence pro-
grammed to the chip. Blinking sequence is trained to the chip
by using the three on- and of time slide bars. Below the slide
Figure 2. LP5522 Evaluation Software User Interface
2
bars is the blinking sequence preview window. On the bottom
of the user interface are the control buttons. Reset button re-
sets the chip to its initial state. Manual button is used to
directly control LED on and off and is accessible only when
no blinking sequence is programmed to the chip. Train button
is used to program the sequence selected on the sequence
field to the chip. Run and Run Once buttons are accessible
only when there is a blinking sequence trained to the chip.
Run button set the chip to continuous run mode until Run but-
ton is pressed again or Reset button is pressed. Run once
button runs the trained sequence once and then the chip re-
turns back to standby mode. Quit button shuts down the
control program.
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