LP55281RLEV National Semiconductor, LP55281RLEV Datasheet - Page 6

• 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

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LED TEST, ALED AND AUDIO SYNCHRONIZATION TAB
In this tab LED test, ALED and Audio Sync. is controlled.
LED test can be done automatically with LED Auto Test by
pushing Start button. Test will go thru all the leds and indicate
if they are connected or not. LED test can be done by using
ADC also. Test is enabled by checking the Test enable box.
Desired LED is chosen from pull-down menu and value can
be read by pushing the Read ADC button. Note that LED test
will not work correctly unless the PWM of the LED under test
is 100%. Also the LED current should be at minimum.
Figure 6. LED Test, ALED and Audio Sync. Tab
6
ALED current is controlled with Current slider. Below the slid-
er is the Audio synchronization enable box, which sets the
ALED into Audio Sync. mode.
With audio synchronization controls, you can enable the Au-
tomatic Gain Control, set gain control level manually, select
Speed from pull-down menu, select DC filter between 80 Hz
or 510 Hz and set the Threshold.
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