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KP1077A
KP1077A High-efficiency, buck-type quasi-resonant LED power switch KP1077A is a buck-type constant current LED power switch. The chip adopts a quasi-resonant working mode, eliminating the need for auxiliary winding detection demagnetization. The chip has high working efficiency, reaching over 95% in system applications. At the same time, it integrates a high-voltage 500V power MOSFET and a high-voltage self-powered circuit, simplifying system design and production costs. The chip integrates high-precision inductor current sampling technology to achieve high-precision constant current output, and the output line voltage and load regulation performance are excellent. KP1077A integrates complete protection functions to ensure safe and reliable system operation, such as: VDD undervoltage protection (UVLO), cycle-by-cycle current limit (OCP), overtemperature protection (OTP), LED short-circuit protection, etc.
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- Product Description
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- Commodity name: KP1077A
- 封装: SOP-4
- 品牌: Biyi Microelectronics
KP1077A High-efficiency, buck-type quasi-resonant LED power switch KP1077A is a buck-type constant current LED power switch. The chip adopts a quasi-resonant working mode, eliminating the need for auxiliary winding detection demagnetization. The chip has high working efficiency, reaching over 95% in system applications. At the same time, it integrates a high-voltage 500V power MOSFET and a high-voltage self-powered circuit, simplifying system design and production costs. The chip integrates high-precision inductor current sampling technology to achieve high-precision constant current output, and the output line voltage and load regulation performance are excellent. KP1077A integrates complete protection functions to ensure safe and reliable system operation, such as: VDD undervoltage protection (UVLO), cycle-by-cycle current limit (OCP), overtemperature protection (OTP), LED short-circuit protection, etc.
Main Features
• Integrated high-voltage 500V MOSFET and high-voltage self-powered circuit
• No VDD capacitor design
• ±5% constant current accuracy
• Quasi-resonant mode operation
• Efficiency up to 95% or higher
• Ultra-low operating current
• Excellent line voltage and load regulation
• Internal protection functions:
• Cycle-by-cycle current limiting (OCP)
• Leading edge blanking (LEB)
• LED short-circuit protection
• Over-temperature protection (OTP)
• Package type SOP-4
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