Description:
Power your low-voltage electronics safely and efficiently with the Fulree 12V to 3.3V 2.5A Ultra-Thin DC Step-Down Converter. Designed for vehicles, LED systems, DIY builds, and electronic projects, this compact converter delivers steady performance with advanced protection features — all in an ultra-slim 11mm shell.
Whether you're powering sensors, microcontrollers, LED strips, car accessories, or custom electronics, this high-efficiency converter ensures stable output with overcurrent, overheating, reverse connection, and short-circuit protection.
 
Key Features:
✅ Ultra-Thin 11mm Design – slim, lightweight, and easy to install
✅ Wide Compatibility – ideal for lights, microcontrollers, modules, fans & more
✅ High Conversion Efficiency (95%+) – powerful, stable output
✅ Multiple Protection Systems – overcurrent, overheating, short-circuit, reverse­ connection
✅ Mini & Space-Saving – perfect for vehicles and compact electronic setups
✅ Durable Build – reliable long-term performance
 
Product Details:
Brand: Fulree
Model: 1503B Step-Down Converter
Input Voltage: DC 8V–15V
Output Voltage: 3.3V (also supports 4.2V / 5V / 6V / 7.5V / 9V variants)
Output Current: 2.5A (9V 1A)
Output Power: 8.25W – 18.75W (depending on voltage)
Efficiency: 95%+
No-Load Consumption: 10–12mA
Operating Temp: -40°C ~ +80°C
Dimensions: 43 × 22 × 11mm
Weight: ~14g
Cable Length: 13cm
 
Wiring Instructions:
Red: Input + (positive)
Black: Common negative (input/output)
Yellow: Output + (positive)
Suitable for LED lights, dash electronics, sensors, microcontrollers, fans, CCTV modules, and more.
 
Why Buy This Item?
✔ High-efficiency power delivery
✔ Ultra-thin design fits anywhere
✔ Safe & reliable with full protection system
✔ Perfect for automotive, DIY & electronics
✔ Trusted Fulree quality — stable & durable