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NXP Semiconductors SSL5018TE/1Y
- Part No.:
- SSL5018TE/1Y
- Manufacturer:
- NXP Semiconductors
- Category:
- LED Drivers
- Package:
- 8-SOIC (0.154", 3.90mm Width) Exposed Pad
- Datasheet:
-
SSL5018TE/1Y.pdf
- Description:
- IC LED DRIVER OFFL 1.2A 8HSO
- Quantity:
- Payment:
- Shipping:
Inventory:2,557
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Product details
Overview
The SSL5018TE from NXP Semiconductors is a high-voltage LED driver IC with integrated 600 V MOSFET, designed for non-dimmable mains-powered LED lamps (e.g., 18 W T-LEDs). It operates in Boundary Conduction Mode (BCM), delivers >0.95 power factor, achieves up to 93 % efficiency, and supports input voltages up to 230 V AC.
For engineers reviewing the SSL5018TE datasheet, SSL5018TE pinout, SSL5018TE application, or SSL5018TE equivalent, key selection considerations include its integrated high-voltage switch, valley-switching capability, internal OTP/OSP/OCP protections, compact HSO8 thermal package, and compatibility with low-cost off-the-shelf inductors in buck topology.
Technical Context
The SSL5018TE implements peak-current-mode BCM control with valley detection on the DRAIN pin to enable zero-voltage switching, reducing turn-on losses. Its internal 600 V MOSFET features RDS(on) = 5 Ω (Tj = 25 °C) and supports up to 1.2 A drain current.
Startup is enabled via an internal HV current source (Istb(HV) = 350 µA), while steady-state VCC supply is derived from the DVDT pin using dV/dt coupling - eliminating need for auxiliary windings. Protection includes UVLO (VCC(stop) = 9 V), LEB (300 ns), OCP (500 mV threshold at SOURCE2), OTP (Tth(act) = 170 °C), and latched OSP (tdet(sc) = 20 ms).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VIN Range | 100–230 V AC rectified; enables global mains compatibility without external voltage scaling |
| Power Factor | >0.95 at full load; meets EN61000-3-2 Class C harmonic limits for lighting |
| Efficiency | Up to 93 %; reduces thermal stress and enables higher power density in compact LED lamps |
| fconv | 100 kHz typical; allows use of small, low-cost inductors with minimal core loss |
| RDS(on) | 5 Ω @ 25 °C; integrated switch eliminates external MOSFET BOM and layout complexity |
| VBR(DRAIN) | 600 V; supports direct connection to 230 V AC mains after bridge rectification |
| Thermal Rth(j-a) | 78 K/W (free air, 2-layer PCB); exposed pad in HSO8 package enables 18 W+ LED lamp operation |
Pinout & Package
The SSL5018TE is housed in an HSO8 (SOT786-3) thermally enhanced plastic package with an exposed die pad for improved heat dissipation in high-power LED drivers.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| HV | High-voltage startup supply | Internal 350 µA current source enables direct start from rectified mains; no external bias winding required |
| SOURCE1 | MOSFET source (power path) | Primary return path for internal switch current; connects to output capacitor ground |
| SOURCE2 | Current sense input | Monitors peak MOSFET current via external sense resistor; sets OCP threshold at 500 mV |
| VCC | IC supply rail | Operates 8–15 V; internal clamp limits max to 19 V; UVLO hysteresis ensures stable restart |
| NTC | Thermal/PWM control input | Accepts NTC thermistor for LED overtemperature foldback or digital PWM signal for dimming control |
| DVDT | dV/dt supply coupling | Rectifies voltage swing from DRAIN node to self-power VCC during normal operation |
| GND | Signal and power reference | Common return for control circuitry and low-side current sensing |
| DRAIN | MOSFET drain output | Switches 600 V, ±1.2 A; valley detection circuitry minimizes switching loss via zero-voltage turn-on |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 600 V MOSFET | Eliminates external high-voltage switch, reducing BOM count and PCB footprint by ≥3 components |
| Valley-switching BCM control | Reduces switching losses and EMI; enables use of standard low-cost inductors without special core materials |
| Direct PWM current regulation via NTC pin | Supports digital dimming without external gate driver or optocoupler; preserves constant-current LED drive |
| Latched Output Short Protection (OSP) | Halts operation until power cycle; prevents thermal runaway during LED string short or open-circuit fault |
| Internal OverTemperature Protection (OTP) | Safe-restart behavior (Tth(rel) = 100 °C) ensures LED lamp lifetime compliance without manual reset |
Applications
| General Lighting – T-LED Lamps | Commercial Downlights |
|---|---|
Use Scenario: 18 W non-dimmable T8 LED tube replacement operating directly from 230 V AC mains. IC Role / Device Role / Timing Role: Primary controller and power switch in buck topology; performs BCM current regulation and valley-synchronized switching. Use Value: Achieves >0.95 PF and <20 % THD without active PFC stage, meeting IEC62384 and EN61000-3-2 requirements. | Use Scenario: 15–20 W recessed downlight with aluminum heat sink and single-layer FR4 PCB. IC Role / Device Role / Timing Role: High-efficiency LED current regulator with integrated thermal foldback via NTC pin. Use Value: Exposed-pad HSO8 package enables 78 K/W thermal resistance, supporting 18 W output without forced air cooling. |
| Industrial Area Lighting | Streetlight Retrofit Modules |
Use Scenario: IP65-rated warehouse fixture with wide ambient temperature range (−25 °C to +65 °C). IC Role / Device Role / Timing Role: Robust LED driver with brownout protection and safe-restart OTP for unregulated grid conditions. Use Value: ton(high) limit (15 µs) maintains stable LED current during input sags; OTP release at 100 °C prevents premature shutdown. | Use Scenario: Retrofit module replacing 35 W HID lamp in existing streetlight housing with limited space. IC Role / Device Role / Timing Role: Compact, high-voltage buck controller enabling direct AC-to-LED conversion without bulky transformers. Use Value: Small PCB footprint and low BOM (no Schottky diode, no auxiliary winding) reduce retrofit module size and cost by >15 %. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar non-dimmable LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SSL5022TE | Higher power rating (22 W), same HSO8 package, identical pinout, but RDS(on) = 3.5 Ω @ 25 °C | Targeted at 22 W T-LEDs; requires re-optimization of inductor value and sense resistor | Select when >18 W output or lower conduction loss is required; not drop-in for SSL5018TE designs |
| UCC28810DR | TI standalone PFC + flyback controller; no integrated MOSFET; requires external 600 V FET and separate PFC inductor | Designed for higher PF (>0.99) and lower THD (<10 %); used in premium commercial fixtures | Choose for stricter harmonic compliance or when design flexibility justifies added BOM and layout complexity |
Compared with SSL5018TE, SSL5022TE offers higher power capability with identical footprint but requires updated current-sense calibration, while UCC28810DR provides superior PF/THD performance at the cost of increased component count, board area, and design effort.
Availability
SSL5018TE is available at Aetrix Electronics and suitable for general lighting, commercial downlights, industrial area lighting, and streetlight retrofit modules requiring stable component supply and long-lifecycle support.
Supply support for SSL5018TE includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
NXP Semiconductors is a global semiconductor company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and IoT applications.
The SSL5018TE belongs to NXP's SSL (Solid-State Lighting) driver IC product line, engineered specifically for cost-sensitive, high-efficiency, non-dimmable LED lamp designs targeting mains-powered general illumination.
FAQ
What is the maximum continuous input voltage the SSL5018TE supports?
The SSL5018TE supports rectified AC input voltages up to 230 V, corresponding to a peak voltage of approximately 325 V. Its integrated 600 V MOSFET and HV pin rated to 600 V DC ensure reliable operation under surge and line-voltage transients common in mains-connected LED lighting applications. The device is specified for 100 V, 120 V, and 230 V AC systems per Table 3.
Does the SSL5018TE require an external Schottky diode in buck configuration?
No, the SSL5018TE does not require an external Schottky diode. Its Zero Current Switching (ZCS) operation eliminates reverse recovery losses, and the internal valley detection ensures efficient freewheeling without needing a fast-recovery diode. This is explicitly stated in Section 2 ("Low BOM LED driver solution") and confirmed in Figure 3, where no external diode appears in the basic application diagram.
How does the SSL5018TE implement thermal protection for LED strings?
The SSL5018TE uses the NTC pin to monitor LED temperature via an external NTC thermistor. When the sensed voltage drops below Vth(low)NTC (0.35 V typ), peak current is reduced; if Vact(tmr)NTC (0.29 V typ) is crossed, a timer initiates foldback. If Vdeact(tmr)NTC (0.2 V typ) is not reached within 46 µs, LED overtemperature is declared and switching halts until restart. This behavior is fully documented in Section 8.7 and Figure 6.
Can the SSL5018TE be used in dimmable LED lamp designs?
The SSL5018TE is explicitly designed for non-dimmable applications. While its NTC pin supports PWM current regulation (Section 8.7), this is intended for thermal foldback or on/off control-not smooth analog or trailing-edge dimming. NXP does not specify compatibility with TRIAC or ELV dimmers, and the datasheet states "Compact non-dimmable LED driver IC" in the title and Section 3. For dimmable designs, NXP recommends SSL210x or UBA20xx families.
What is the purpose of the DVDT pin on the SSL5018TE?
The DVDT pin on the SSL5018TE provides self-supply for the VCC rail by rectifying the voltage swing on the DRAIN node during switching. This eliminates the need for an auxiliary winding or external bias supply, simplifying transformer design and reducing system cost. As described in Section 8.4 and 8.5, it functions as an internal single-sided rectifier and is the primary VCC source during normal operation - distinct from the HV pin's startup current source.
SSL5018TE/1Y Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- GreenChip™
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width) Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Type:
- AC DC Offline Switcher
- Topology:
- Step-Down (Buck)
- Internal Switch(s):
- Yes
- Number of Outputs:
- 1
- Voltage - Supply (Min):
- 8V
- Voltage - Supply (Max):
- 15V
- Voltage - Output:
- 600V
- Current - Output / Channel:
- 1.2A
- Frequency:
- -
- Dimming:
- -
- Applications:
- -
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-HSO
SSL5018TE/1Y FAQ
1.How can I place an order for SSL5018TE/1Y through Aetrix?
Please submit a Request for Quotation (RFQ) for SSL5018TE/1Y on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for SSL5018TE/1Y reliable?
The price and inventory of SSL5018TE/1Y are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SSL5018TE/1Y is usually 5 days.
3.What payment methods are accepted for SSL5018TE/1Y?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SSL5018TE/1Y transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SSL5018TE/1Y?
SSL5018TE/1Y orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SSL5018TE/1Y order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for SSL5018TE/1Y?
For technical support, including SSL5018TE/1Y datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SSL5018TE/1Y requirements.
6.How does Aetrix verify that SSL5018TE/1Y is sourced from the original manufacturer or authorized distributors?
All SSL5018TE/1Y products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SSL5018TE/1Y meets industry standards.
7.What is the process for return or replacement of SSL5018TE/1Y?
All SSL5018TE/1Y units undergo pre-shipment inspection (PSI). If there is an issue with SSL5018TE/1Y, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The SSL5018TE/1Y part is unused and in its original packaging.
Return procedure for SSL5018TE/1Y:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SSL5018TE/1Y Tags
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BCR420UE6433HTMA1
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BCR421UE6327HTSA1
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LYT1604D-TL
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HV9910CLG-G
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CL2N8-G
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BCR420UW6-7
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BCR421UW6-7
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BCR420UFD-7
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BCR421UFD-7
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