The MP7633AD is a high-efficiency, primary-side regulated (PSR) LED driver manufactured by Exar Corporation (now part of MaxLinear). It's designed for offline LED lighting applications, providing accurate constant current (CC) output without the need for an optocoupler, which simplifies the design and reduces the bill of materials (BOM) cost.

Applications:

• LED Lighting
• LED bulbs
• LED tubes
• LED streetlights
• General-purpose constant current source

Features:

• Primary-Side Regulation (PSR) eliminating optocoupler
• High efficiency
• Accurate constant current (CC) control
• Over-voltage protection (OVP)
• Short-circuit protection (SCP)
• Over-temperature protection (OTP)
• Low start-up current
• Cycle-by-cycle current limiting

Benefits:

• Simplified design and reduced BOM cost due to optocoupler-free operation
• High energy efficiency leading to lower operating costs
• Stable and reliable LED current regulation ensures consistent brightness
• Robust protection features enhance system reliability and safety
• Compact solution size

Specifications:

The MP7633AD operates from a universal AC input voltage range (85VAC to 265VAC). It typically delivers power up to 12W. It features a high power factor and low total harmonic distortion (THD). The device is available in a compact SOP-7 package. Its switching frequency is internally fixed. The over-voltage protection (OVP), short-circuit protection (SCP), and over-temperature protection (OTP) features safeguard the LED driver and the connected LEDs from damage.