It's a small size (5x10mm) 20mA Step-Up CC LED Driver "Joule Thief" for LEDs.

Details:

• Small size (5x10mm)
• Fully assembled
• The set current has a tolerance of +/- 3mA, depending on the input voltage, temperature, and component tolerance.
• Output Voltage up to 15V (LEDs serial connection)
• Maximum power dissipation 0.2W (25°C)! (Due to the small size of the PCB)
• Automatic shutdown when voltage drops below 0.8-0.9V (No flashing)
• No adjustment possible (voltage, current, frequency)
• The switching frequency varies based on the input voltage. Approximately 300-500kHz.

ZXLD381

• Startup voltage: 0.9V
• Maximum input voltage: 2.2V
• 85% Efficiency

PR4401

• Startup voltage: 0.9-1V
• Maximum input voltage: 2.0V
• 80% Efficiency

Included based on the chosen option (as photo):

PR4401 - Assembled PCB:

• 1x - fully assembled LED driver without any cables and LED (photo with description - "Assembled")

PR4401 - White LED, 15cm Cable (Assembled):

• 1x - fully assembled LED driver with 15cm cables and white LED (photo with description - "White LED, 15cm Cable")

ZXLD381 - Assembled PCB:

• 1x - fully assembled LED driver without any cables and LED (photo with description - "Assembled")

ZXLD381 - White LED, 15cm Cable (Assembled):

• 1x - fully assembled LED driver with 15cm cables and white LED (photo with description - "White LED, 15cm Cable")

Read this before ordering!

The parameters may vary slightly. Do not exceed maximum voltage. It is a switched driver, generates EMI interference and the switched current is higher than the measured "mean" current. It has no polarity reversal protection!

Return Policy:

Never underestimate electrostatic discharge (ESD)! The return does not apply to mechanical damage. If you exceed the maximum power dissipation 0.2W, voltage and driver burns, there is no return or refund.