零件编号
SD7933
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SHOUDING Shouding Semiconductor
SD7933 数据手册 ( 数据表 ) - SHOUDING Shouding Semiconductor
SHOUDING Shouding Semiconductor
DESCRIPTION
SD7933 is a single-stage， primary side control AC-DC LED driver with active power factor correction. SD7933 integrates on-chip PFC circuit operates in critical conduction mode (CRM) to achieve high power factor and reduce the power MOSFET switching loss. With Shouding Proprietary control technique, precision LED current is achieved without secondary side sense and feedback circuit including opto-coupler.
SD7933 provides various protections, such as over current protection (OCP), over voltage protection (OVP), short circuit protection (SCP) and over temperature protection (OTP), etc, to improve system reliability.
FEATURES
• Single-stage Active PFC for high power
factor and low THD
• Primary side control eliminates opto-coupler
• High precision LED current (+/-3%)
• Critical Conduction Mode operation
• Up to 20W driving capability.
• Cycle-by-cycle current limiting
• Under-voltage lockout (UVLO) protection
• VDD and output over voltage protection
• Adjustable constant current and output
power setting
• Power on soft-start
• Compact SOT23-6 package
APPLICATIONS
• AC/DC LED driver applications
• Signal and decorative LED lighting
• E14/E27/PAR30/PAR38/GU10 LED lamp
• T8/T10 LED String
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