The SSL5021 and SSL5031 are part of a new range of LED driver ICs for nonisolated,non-dimmable LED solutions. Complementing NXP’s broad GreenChip SSL family of products,the new ICs supports LED lighting applications ranging from 5 W lamp power like Candelashape up to 25 W lamp power like integrated Fixtures/Luminaires, TLED and PAR lampshapes.

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
• Optimized for high power factor/low-THD operation (SSL5031)
• 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 (SSL5021BTS and SSL5031BTS only)

• 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 25 W

• PDTA143EU - PNP配电阻晶体管；R1 = 4.7 kΩ，R2 = 4.7 kΩ
• BBY40 - VHF变容二极管
• BLL8H0514L(S)-130 - LDMOS driver transistor
• BUK7Y4R4-40E - N沟道40 V，4.4 mΩ标准电平MOSFET，采用LFPAK56封装
• 74HC238D - 3至8线路解码器/解复用器
• 74HCT3G34DC - 三路缓冲器门
• BLC8G27LS-180AV - LDMOS功率晶体管
• 74AHC1G86GV - 2输入异或门
• PESD5V0S1UB - 采用SOD523封装的ESD保护二极管
• SL2ICS50; SL2ICS51 - ICODE SLI-L/ICODE SLI-L HC