LP5524TM-5EV National Semiconductor, LP5524TM-5EV Datasheet - Page 2

• 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

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Jumper Description
This describes the jumpers and the connectors on the LP5524
Evaluation Board.
VIN – J1
This connector is the positive input for power supply. Evalu-
ation board can operate with supply voltages from 2.7V to
5.5V. The input leads from power supply should be twisted
and kept as short as possible. There is an input capacitor (C1)
on board to smooth the input voltage.
GND – J4
This is the negative input for power supply.
J2
This jumper disconnects all LED cathodes from the GND. This
can be used to separate the LED currents from the circuit
current.
D1B – J6
This jumper can be used to disconnect the D1B output from
the LED anode. This can be used to measure the D1B current.
D2B - J3
This jumper can be used to disconnect the D2B output from
the LED anode. This can be used to measure the D2B current.
D2A – J7
This jumper can be used to disconnect the D2A output from
the LED anode. This can be used to measure the D2A current.
D1A – J5
This jumper can be used to disconnect the D1A output from
the LED anode. This can be used to measure the D1A current.
Figure 2. LP5524 Evaluation Board Top View
2
D2A – J7
This jumper can be used to disconnect the D2A output from
the LED anode. This can be used to measure the D2A current.
ENB – J8
This is the ENB input. A three pin connector is applied to allow
ENB to be connected either to VIN or to GND. The center pin
is connected directly to ENB pin. This pin can be used to con-
nect external PWM signal. Smaller than 300 Hz PWM fre-
quency is recommended.
ISET – J10
ISET pin jumper. This can be used to connect the ISET pin
either to VIN or to onboard RISET resistor. Connecting ISET
to VIN sets the LED current to default 5mA and connecting it
to RISET sets the current to 15.6mA. Center pin is connected
directly to ISET pin and it can be used to connect external
current set resistors.
ENA – J9
This is the ENA input. A three pin connector is applied to allow
ENA to be connected either to VIN or to GND. The center pin
is connected directly to ENA pin. This pin can be used to con-
nect external PWM signal. Smaller than 300 Hz PWM fre-
quency is recommended.
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