My Inquiry
My Account
NXP Semiconductors SSL5101T/1J
- Part No.:
- SSL5101T/1J
- Manufacturer:
- NXP Semiconductors
- Category:
- LED Drivers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SSL5101T/1J.pdf
- Description:
- IC LED DRIVER OFFL SWITCHER 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:2,903
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SSL5101T/1J from NXP Semiconductors is an offline LED controller IC designed for primary-side regulated, single-stage AC-DC LED drivers in mains-connected lighting. It supports flyback, buck, and buck-boost topologies; delivers ±4 % LED current accuracy; operates at 55–117 kHz switching frequencies; and integrates HV start-up JFET, valley-switching, and comprehensive protection including OCP, OTP, UVLO, and mains sync loss detection - enabling compact 4–25 W PAR/GU10/A19 lamp designs.
For engineers reviewing the SSL5101T/1J datasheet, SSL5101T/1J pinout, SSL5101T/1J application, or SSL5101T/1J equivalent, key selection considerations include selectable LTHD vs. low-ripple operation modes, DRAIN-pin HV sensing up to 700 V, PWRDRV gate drive capability (900 mA sink), RMAINS-based mains synchronization, and SO8 package compatibility with thermal resistance of 89 K/W (JEDEC 2s2p).
Technical Context
The SSL5101T/1J implements Discontinuous Conduction Mode (DCM) peak-current control with valley-switching detection on the DRAIN pin to minimize capacitive switching losses. Its regulation loop dynamically adjusts switching frequency, cycle count per half-mains period, and peak current threshold (Vth(ISNS) = 0.35 V low-ripple / 0.78 V LTHD) to maintain precise LED current across line, load, and component variation.
It features dual-frequency operation (LF: 55–78 kHz; HF: 84–117 kHz), three selectable control modes (LTHD, eco-LTHD, low ripple) set via external resistors on ISNS and PWRDRV pins, and built-in CCM-prevention logic that reduces frequency if idle time falls below ~1.8 µs - ensuring robust DCM operation without design margining.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDRAIN max | 700 V - enables direct connection to rectified 230 VAC mains without external HV divider |
| fsw range | 55–117 kHz - selectable LF/HF modes optimize tradeoff between THD, LED ripple, and magnetics size |
| LED current accuracy | ±4 % - maintained across temperature, line voltage (100–230 VAC), and component tolerances |
| Vth(ISNS) | 0.35 V (low ripple) / 0.78 V (LTHD) - sets peak inductor current threshold for output regulation |
| PWRDRV drive | 900 mA sink / 360 mA source - directly drives standard MOSFET gates without external buffer |
| Protections | UVLO, OCP, OTP, brownout, OSP, OVP, mains sync loss, LEB - full safety coverage for unattended lighting |
| RMAINS input | 360 µA typical at mains peak - provides zero-cross detection and input voltage shaping for PF correction |
Pinout & Package
SSL5101T/1J is housed in an SO8 package (SOT96-1): plastic small outline, 8-lead, 3.9 mm body width, 1.27 mm pitch, JEDEC MS-012 compliant. Thermal resistance is 89 K/W (JEDEC 2s2p) and 159 K/W (2 cm × 3 cm PCB, 2-layer).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RMAINS (1) | Mains voltage sensing input | Accepts current proportional to rectified mains; enables THD optimization and synchronization - open-circuit triggers mains loss protection |
| VCC (2) | IC supply rail | Charged internally from DRAIN at startup; powers internal circuitry; UVLO activates at 9.3 V, restarts at 18.5 V |
| TST2 (3) | Test pin | Must be connected to GND in application; not used in normal operation |
| TST (4) | Test pin | Must be connected to GND in application; not used in normal operation |
| ISNS (5) | Peak current sense input | Senses voltage across external sense resistor; sets LED current via Vth(ISNS); mode resistor defines LTHD/eco/low-ripple behavior |
| PWRDRV (6) | MOSFET gate driver output | Drives external switch gate; 10.7 V high-level output; 900 mA sink capability ensures fast turn-off |
| GND (7) | Power and signal ground | Common reference for all analog and digital blocks; must be low-impedance return path for ISNS and DRAIN signals |
| DRAIN (8) | High-voltage drain sense & energy harvest | Connects to MOSFET drain; supplies startup current to VCC; detects demagnetization and valley for ZVS |
Key Features
| Feature | Design Value |
|---|---|
| Valley-switching detection | Reduces switching losses by triggering MOSFET turn-on at drain voltage minima - improves efficiency and EMI |
| Selectable LTHD/low-ripple modes | External resistor selection enables >0.9 PF (LTHD) or <5 % LED current ripple (low ripple) - no hardware redesign needed |
| Integrated HV start-up JFET | Eliminates external start-up resistor network - reduces BOM count and standby power dissipation |
| Primary-side regulation (PSR) | Accurate LED current control without secondary-side optocoupler or shunt regulator - simplifies isolation and lowers cost |
| CCM-prevention logic | Monitors off-time gap and reduces fsw if idle time drops below ~1.8 µs - guarantees DCM operation across all loads |
| Wall-switch compatible standby | Draws only 0.1–1.5 mA during standby - supports illuminated wall switches without flicker or leakage issues |
Applications
| LED Retrofit Lamps | Dimmable GU10 Spotlights |
|---|---|
|
Use Scenario: Replacing halogen GU10 lamps with 230 VAC-input LED modules in residential downlights. IC Role / Device Role / Timing Role: Primary-side controller regulating constant LED current in flyback topology; synchronizes switching to mains zero-cross for dimmer compatibility. Use Value: Enables <10 mm PCB height, ±4 % current stability over 100–230 VAC, and seamless phase-cut dimmer support without auxiliary winding. |
Use Scenario: Compact 5–7 W directional LED spotlights with integrated heat sink and E27/GU10 base. IC Role / Device Role / Timing Role: Buck-boost controller driving high-VF LED strings; uses RMAINS for input voltage feedforward and valley switching for efficiency. Use Value: Achieves >85 % efficiency at 230 VAC, eliminates optocoupler and TL431, and fits within candle-form-factor mechanical constraints. |
| A19 Bulb Drivers | PAR30/38 Outdoor Fixtures |
|
Use Scenario: Mains-powered A19 LED bulbs requiring universal input (100–240 VAC) and high power factor (>0.9). IC Role / Device Role / Timing Role: LTHD-mode flyback controller using eco-LTHD resistor configuration; regulates current via ISNS while shaping input current waveform. Use Value: Meets ENERGY STAR® THD <20 % and PF >0.9 requirements with single-stage topology and <15-component BOM. |
Use Scenario: Outdoor-rated PAR38 floodlights operating continuously at 40 °C ambient with 230 VAC input. IC Role / Device Role / Timing Role: High-reliability LED driver IC with auto-restart OTP (175 °C trip), output short protection (10–20 ms detection), and 700 V DRAIN rating. Use Value: Ensures 25,000-hour lifetime matching LEDs; survives lightning surges; maintains regulation during brownout events down to 150 VAC. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor NCL30001DR2G | Fixed 65 kHz fsw; no HF mode; requires external HV start-up resistor; lower VDRAIN rating (650 V) | Limited to ≤18 W designs; less flexible THD/ripple tradeoff; higher BOM count due to external start-up network | Choose when cost sensitivity outweighs flexibility and 700 V surge margin is unnecessary |
| Infineon ICE2QS03G | Quasi-resonant flyback only; no buck/buck-boost support; no RMAINS input; relies on auxiliary winding sensing | Cannot implement LTHD mode or mains-synchronized low-ripple operation; unsuitable for universal-input single-stage designs | Prefer for legacy QR flyback systems where PSR accuracy and multi-topology support are not required |
Compared with NCL30001DR2G and ICE2QS03G, SSL5101T/1J uniquely combines 700 V DRAIN tolerance, RMAINS-based mains synchronization, dual-frequency operation, and three selectable regulation modes - enabling single-stage, universal-input LED drivers with best-in-class PF/ripple/size tradeoffs.
Availability
SSL5101T/1J is available at Aetrix Electronics and suitable for LED retrofit lamps, GU10 spotlights, A19 bulbs, and PAR30/38 outdoor fixtures requiring stable component supply, long-lifetime reliability, and compliance with ENERGY STAR® and IEC 61000-3-2 Class C harmonic limits.
Supply support for SSL5101T/1J 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 SSL5101T/1J belongs to NXP's GreenChip LED controller product line, engineered specifically for high-efficiency, single-stage, primary-side regulated AC-DC LED drivers targeting compact, cost-sensitive, and standards-compliant general lighting applications.
FAQ
What topologies does the SSL5101T/1J support?
The SSL5101T/1J supports flyback, buck, and buck-boost converter topologies. Topology selection is determined by the resistor value on the PWRDRV pin (RTF): 15 kΩ for flyback/buck-boost LF mode, 56 kΩ for flyback/buck-boost HF mode, 33 kΩ for buck HF mode, and 33 kΩ for buck LF mode. Each configuration enables optimized performance for its target application size and efficiency requirement.
How does the SSL5101T/1J achieve ±4 % LED current accuracy?
The SSL5101T/1J achieves ±4 % LED current accuracy through primary-side regulation using valley-switching DCM control, precise peak current sensing on the ISNS pin (with Vth(ISNS) = 0.35 V or 0.78 V depending on mode), and real-time adaptation of switching frequency and cycle count per half-mains period. This architecture compensates for variations in line voltage, LED forward voltage, and component tolerances without secondary feedback.
What protection features are integrated into the SSL5101T/1J?
The SSL5101T/1J integrates UnderVoltage LockOut (UVLO), OverCurrent Protection (OCP), Brownout Protection, Output Short Protection (OSP), Output Open OverVoltage Protection (OVP), Internal OverTemperature Protection (OTP), Mains Synchronization Loss Protection, and Leading-Edge Blanking (LEB). All protections except OVP are auto-restart; OVP is latched and requires power-cycle recovery.
Can the SSL5101T/1J be used with leading-edge TRIAC dimmers?
Yes, the SSL5101T/1J supports leading-edge TRIAC dimmers when configured in LTHD or eco-LTHD mode. Its RMAINS pin enables mains synchronization, allowing the controller to align switching cycles with the dimmer's conduction angle - minimizing flicker and ensuring stable dimming down to 5 % light output in properly designed flyback implementations.
What is the maximum output power achievable with the SSL5101T/1J?
The SSL5101T/1J is rated for LED driver applications from 4 W to over 25 W. Maximum output power depends on topology, heatsinking, and external MOSFET selection - for example, a well-cooled SO8-mounted SSL5101T/1J driving a 600 V MOSFET in flyback configuration can sustain >20 W continuous output at 230 VAC input with full protection coverage and thermal margin.
SSL5101T/1J Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- GreenChip™
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Type:
- AC DC Offline Switcher
- Topology:
- Flyback, Step-Down (Buck), Step-Up (Boost)
- Internal Switch(s):
- No
- Number of Outputs:
- 1
- Voltage - Supply (Min):
- 8.8V
- Voltage - Supply (Max):
- 32V
- Voltage - Output:
- -
- Current - Output / Channel:
- -
- Frequency:
- -
- Dimming:
- -
- Applications:
- Lighting
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO
SSL5101T/1J FAQ
1.How can I place an order for SSL5101T/1J through Aetrix?
Please submit a Request for Quotation (RFQ) for SSL5101T/1J 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 SSL5101T/1J reliable?
The price and inventory of SSL5101T/1J are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SSL5101T/1J is usually 5 days.
3.What payment methods are accepted for SSL5101T/1J?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SSL5101T/1J transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SSL5101T/1J?
SSL5101T/1J orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SSL5101T/1J 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 SSL5101T/1J?
For technical support, including SSL5101T/1J datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SSL5101T/1J requirements.
6.How does Aetrix verify that SSL5101T/1J is sourced from the original manufacturer or authorized distributors?
All SSL5101T/1J 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 SSL5101T/1J meets industry standards.
7.What is the process for return or replacement of SSL5101T/1J?
All SSL5101T/1J units undergo pre-shipment inspection (PSI). If there is an issue with SSL5101T/1J, 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 SSL5101T/1J part is unused and in its original packaging.
Return procedure for SSL5101T/1J:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SSL5101T/1J Tags
-
BCR402RE6327HTSA1
Infineon Technologies
-
BCR430UXTSA2
Infineon Technologies
-
BCR420UE6433HTMA1
Infineon Technologies
-
BCR420UE6327HTSA1
Infineon Technologies
-
BCR421UE6327HTSA1
Infineon Technologies
-
LYT1604D-TL
Power Integrations
-
HV9910CLG-G
Microchip Technology
-
CL2N8-G
Microchip Technology
-
BCR420UW6-7
Diodes Incorporated
-
BCR421UW6-7
Diodes Incorporated
-
BCR420UFD-7
Diodes Incorporated
-
BCR421UFD-7
Diodes Incorporated
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
