0 Product Descriptions

The DP950XB series is a highly integrated constant current LED power switch. The chip adopts a quasi-resonant working mode, and no auxiliary winding is required to detect and demagnetize. At the same time, it integrates a high-voltage 500V power MOSFET and a high-voltage self-supply circuit, which simplifies the design and production cost of the system. The chip integrates high-precision inductor current sampling technology, which can obtain high

Accurate constant current output with excellent line voltage and load regulation.

DP950XB integrates complete protection functions to ensure the safe and reliable operation of the system, such as: VDD under-voltage protection (UVLO), cycle-by-cycle current limit (OCP), over-temperature protection (OTP), output over-voltage protection (OVP), CS sampling Resistor short circuit protection, LED open circuit and short circuit protection, etc.

main feature

Integrated high voltage 500V MOSFET

Integrated high-voltage self-powered circuit

No VDD Capacitor Design

±5% constant current accuracy

High-efficiency operation in quasi-resonant mode

Ultra-low operating current

Excellent line and load regulation

Internal protection function:

Output Over Voltage Protection (OVP)

Cycle-by-Cycle Current Limit (OCP)

Leading Edge Blanking (LEB)

LED open and short circuit protection

Overheating Protection (OTP)

Package type SOP-7 and DIP-7 optional

typical application

High Power LED Lighting

DP9503B Depp MOSFET non-isolated driver DP9501B-DP9502-BDP9503B-DP9504B, DP9505B all series parameter application

: The Little Prince of Wutong Mountain