JH4

JH4 is a single-channel high-voltage LED linear constant current control chip. It uses linear constant current technology. The current accuracy can be controlled within ±5%. The output current is set to 5mA~60mA through the external Rext resistor. If you need to increase the current output, you can also use multiple chips in parallel to increase the current output capacity. JH4 has a built-in over-temperature current reduction function to ensure the safety and reliability of the system. JH4 does not require an inductor or transformer on the periphery. The system application is simple, with very few peripheral devices.

Applications

• Filament lamp
• LED bulb, downlight, etc.
• Other low power LED lighting

Key features

• Constant current setting 5 - 60mA, constant current accuracy ±5%
• No EMI problem in chip application
• Builtin 500V high voltage MOSFET
• With over-temperature current reduction function
• The chip can share the PCB board with LED
• Simple peripheral circuit, low cost, small finished product volume
• Package form ESOP4