LP5524TM-5EV National Semiconductor, LP5524TM-5EV Datasheet - Page 3

• Manufacturer Part Number: LP5524TM-5EV
• Description: BOARD EVALUATION FOR LP5524
• Manufacturer: National Semiconductor

Specifications of LP5524TM-5EV

• Current - Output / Channel: 100mA
• Outputs And Type: 4, Non-Isolated
• Features: Programmable output current
• Voltage - Input: 2.7 ~ 5.5V
• Utilized Ic / Part: LP5524
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Voltage - Output: -
• Lead Free Status / Rohs Status: Not Compliant

Getting Started
The following instructions show how to set up and use the
LP5524 evaluation kit. Please use ESD protection to prevent
any unwanted damaging ESD events.
1.
2.
3.
4.
Check the onboard jumpers. Jumpers on the LED
outputs (J3, J5-J7) and the jumper from LED cathodes to
gnd (J2) should be on. Remove jumpers from enables
(J8 and J9). ISET can be connected either to VDD or
RISET.
Connect evaluation board to a power supply. Check that
operation voltage is between 2.7V to 5.5V.
Set the enable jumpers to ON position. ENA jumper
enables drivers D1A and D2A and ENB jumper enables
drivers D1B and D2B.
The Evaluation Kit is now ready to use.
Figure 3. LP5524 Evaluation Board Current Measurements
3
Current Measurements
To measure the current of a single LED driver remove the
jumper from that driver's output and connect current meter to
jumper's pins. To measure the current of all LEDs remove the
J2 jumper and connect current meter to J2 pins. To measure
the current consumption of the device separate the LED
ground current from the board's ground current by removing
the J2 jumper and conecting the LED ground to power supply
ground with separated wire. Then connect the current meter
to evaluation board's ground wire. Figure 3 illustrates how to
measure different currents.
PWM Dimming
To dim the LEDs feed a proper PWM signal to ENx pin. Less
than 300 Hz PWM frequency is recommended. Ensure that
PWM signals high and low levels are adequate.
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