Details

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BUY LE2080A-PA. https://www.utsource.net/itm/p/12608902.html

Parameter	Description
Part Number	LE2080A-PA
Type	LED Driver IC
Input Voltage Range	9V to 36V
Output Current	Up to 1.2A (adjustable)
Operating Temperature	-40掳C to +85掳C
Package Type	SOT-23-6
Protection Features	Overvoltage, Overcurrent, Short-Circuit, Thermal Shutdown
Efficiency	Up to 92%
Adjustment Method	External Resistor for Output Current Setting
Frequency	500kHz
Quiescent Current	100渭A (typical)
Dropout Voltage	1.2V (max)
Enable Pin	Yes, with logic high/low control

Instructions

1. Circuit Design:

   • Ensure the input voltage is within the specified range (9V to 36V).
   • Connect the input voltage to the VIN pin and ground to the GND pin.
   • Use an external resistor to set the output current. The formula for calculating the resistor value is: [ R_ = frac{1250}{I_} ] where ( I_ ) is the desired output current in amperes.

2. Output Configuration:

   • Connect the LED(s) to the OUT pin and ground.
   • If using multiple LEDs in series, ensure the total forward voltage drop does not exceed the input voltage minus the dropout voltage.

3. Protection and Safety:

   • The IC includes overvoltage, overcurrent, short-circuit, and thermal shutdown protection. No additional components are required for these protections.
   • For optimal thermal performance, ensure adequate heat dissipation by using a heatsink or a PCB with sufficient copper area.

4. Enable Control:

   • The enable pin (EN) can be used to turn the driver on or off. Apply a logic high (VIN) to enable the driver and a logic low (GND) to disable it.

5. Layout Considerations:

   • Place the IC close to the power input and output components to minimize parasitic inductance and improve stability.
   • Use a bypass capacitor (10渭F) between VIN and GND to filter out noise and stabilize the input voltage.

6. Testing:

   • Before finalizing the design, test the circuit under various conditions to ensure stable operation and compliance with the specified parameters.
   • Monitor the temperature of the IC to ensure it stays within the operating range.

7. Storage and Handling:

   • Store the IC in a dry, cool place away from direct sunlight.
   • Handle with care to avoid static discharge, which can damage the IC. Use anti-static wrist straps and mats when handling the device.

(For reference only)