部品番号
SY5802FAC
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メーカー
Silergy Corp.
SY5802FAC データシート - Silergy Corp.
Silergy Corp.
General Description
The SY5802 is a single stage Flyback and PFC controller targeting at LED lighting applications with PWM/Analog dimming. It is a primary side controller without applying any secondary feedback circuit for low cost, and drives the Flyback converter in the quasiresonant mode to achieve higher efficiency. It keeps the Flyback converter in constant on time operation to achieve high power factor.
Features
• Primary side control eliminates the opto-coupler.
• PWM or Analog Dimming.
• Valley turn-on of the primary MOSFET to achieve
low switching losses
• 0.3V primary current sense reference voltage leads
to a lower sense resistance thus a lower conduction
loss.
• Internal high current MOSFET driver: 1A sourcing
and 2A sinking
• Low start up current: 15uA typical
• Reliable short LED and Open LED protection
• Power factor >0.90 with single-stage
conversion.(Analog dimming only)
• Compact package: SO8
Applications
• LED lighting
• Down light
• Tube lamp
• PAR lamp
• Bulb lamp
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