The SSL5031TS is part of a new range of LED driver ICs for nonisolated, non-dimmable LEDsolutions. Complementing NXP’s broad GreenChip SSL family of products, the new ICsupports LED lighting applications ranging from 5 W lamp power like Candela shape up to25 W lamp power like integrated Fixtures/Luminaires, TLED and PAR lamp shapes.

SSL5021BTS SSL5031TS SSL5031BTS SSL5031CTS Topology Buck Buck-boost Buck Buck Low Ripple √

High PF Low THD

√ √ √ Thermal foldback √ √ √

• Driving LED strings from a rectified mains supply, high power factor/low-THD
• Small electronic Bill of Materials (BOM) enabling a compact solution and a small,single layer Printed-Circuit Board (PCB) footprint
• Excellent line and load regulation and LED output current accuracy (< ±3%)
• Efficient BCM operation with:
  • No reverse recovery losses in freewheel diode
  • Zero Current Switching (ZCS) and valley switching
  • Minimal inductance value and size required
  • High efficiency (up to 93 %)
  • Ultra low IC current during operation (< 150 μA)
• Many auto-recovery protections:
  • UnderVoltage LockOut (UVLO)
  • Cycle-by-cycle OverCurrent Protection (OCP)
  • Internal OverTemperature Protection (OTP)
  • Output Overvoltage Protection (OVP)
  • Output Short Protection (OSP)
  • Thermal foldback protection via a single PTC or NTC resistor

• Low cost non-dimmable, non-isolated retrofit LED lamps up to 25 W
• Low cost non-dimmable, non-isolated driver modules for LED lighting up to 25W

• BC857AM - PNP通用晶体管
• TDZ27J - 单倍齐纳二极管
• 74HC(T)273 - 带复位功能的八频D型触发器；正沿触发器
• 74AXP1G98 - 低功耗可配置多功能门
• 74ABT16240ADGG - 16位反相缓冲器/线路驱动器；3态
• 74HCT173D - 四频D型触发器；正沿触发器（三态）
• KMZ49 - 磁阻传感器
• PCA9539BS - 带有中断和复位的16位I2C总线和SMBus低功率I/O端口
• BC53-10PA - 80 V，1 A PNP中等功率晶体管
• 74VHC02D - 四路2输入或非门