LP55281RLEV National Semiconductor, LP55281RLEV Datasheet - Page 9

• 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

Evaluation Hardware
The evaluation board has the LP55281 circuit with the nec-
essary external components placed around it. Test points for
the circuit pins are on the board edges. LEDs are on the right
and left side of the board (there are places for different types
of LEDs). The power and audio connector is on the left side
of the board. Two PCB connectors make the connection to
the USB interface board or some other controller if needed.
The evaluation board makes possible to use the circuit in nor-
mal mode and in 7V tolerant mode. 2.8V LDO on the board
provides the V
used, the 6.2V protection zener diode on the solder side of
the board should be removed.
DD
for the circuit in 7V tolerant mode. If 7V is
Figure 9. LP55281 Evaluation Board
9
The supply voltage V
can be connected to the green power connector. When the
USB interface is used, the V
plied from external power or from the USB board.
There are jumpers on the board for connecting V
each set of LEDs.
DD
, ground GND and I/O-voltage V
DD
and V
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can be either sup-
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DDIO
to