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NXP Semiconductors SSL1523P/N2,112
- Part No.:
- SSL1523P/N2,112
- Manufacturer:
- NXP Semiconductors
- Category:
- LED Drivers
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
SSL1523P/N2,112.pdf
- Description:
- IC LED DRIVER OFFL 2A 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,738
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Product details
Overview
SSL1523P/N2,112 from NXP Semiconductors is a high-voltage SMPS controller IC with integrated 6.5 Ω/650 V DMOS power switch, designed for primary-side-controlled flyback LED drivers up to 15 W. It operates directly from rectified universal AC mains (80–276 V), features valley switching for minimized switch-on loss, and supports both primary-sensing and opto-coupled secondary feedback in retrofit LED lamp designs.
For engineers reviewing the SSL1523P/N2,112 datasheet, SSL1523P/N2,112 pinout, SSL1523P/N2,112 application, or SSL1523P/N2,112 equivalent, key selection considerations include its DIP8 package compatibility, 100 kHz typical oscillator frequency, 75 % maximum duty cycle, valley-switching timing control via AUX pin, and integrated protections including OCP, OTP, and short-circuit winding detection.
Technical Context
The SSL1523P/N2,112 implements voltage-mode control with an RC-tuned oscillator enabling adjustable switching frequency (10–200 kHz) and stable regulation across load variations. Its valley-switching logic monitors drain ringing via the DRAIN pin and initiates primary strokes at minimum voltage points to reduce capacitive turn-on losses.
Start-up is achieved directly from rectified mains through the DRAIN pin, then transitions to auxiliary-winding supply; undervoltage lockout (VCC startup = 9.5 V, stop = 7.5 V) ensures reliable operation during brownouts. Protection functions-including leading-edge-blanked overcurrent sensing on SOURCE, thermal shutdown at 160 °C, and clamp-limited REG pin overvoltage response-are fully integrated and self-contained.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Drain-source RDS(on) | 6.5 Ω (typ) at Tj = 25 °C - enables efficient 15 W LED driver operation with low conduction loss |
| Maximum drain voltage | +650 V - supports direct connection to rectified universal mains without external HV interface |
| Oscillator frequency | 10–200 kHz - externally adjustable via RRC/CRC for EMI optimization and transformer design flexibility |
| Maximum duty cycle | 75 % (typ at 100 kHz) - provides sufficient on-time margin for wide-input, low-output-voltage LED applications |
| Valley detection delay | 150 ns (typ) - ensures precise timing of primary stroke initiation at minimum drain voltage |
| Thermal shutdown threshold | 160 °C (typ) with 2 °C hysteresis - prevents permanent damage during sustained overload or poor heatsinking |
| Standby power | <100 mW - achieved via frequency reduction at light loads, critical for Energy Star-compliant LED lamps |
Pinout & Package
DIP8 package (SOT97-1): 300-mil plastic dual in-line, 8-lead through-hole format with GND pins on pins 2 and 3, and isolated DRAIN (pin 8) rated for 650 V operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC (pin 1) | Supply input | Accepts 9.5–40 V DC; powers internal circuitry after start-up; UVLO thresholds ensure robust line-drop recovery |
| GND (pins 2, 3) | Ground reference | Dual ground connections reduce noise coupling and improve thermal dissipation in DIP8 layout |
| RC (pin 3) | Oscillator timing node | Charges/discharges external capacitor to set switching frequency; exponential discharge enables constant loop gain |
| REG (pin 4) | Regulation feedback | Accepts error-amplifier input (2.5 V reference); clamped at 7.5 V to prevent overvoltage damage |
| AUX (pin 5) | Demagnetization sensing | Detects transformer auxiliary winding zero-crossing to enable valley switching and SOPS mode transition |
| SOURCE (pin 6) | Power switch source | Connects to source of internal DMOS; used for cycle-by-cycle current limiting via external sense resistor |
| REG (pin 7) | Not connected (n.c.) | No internal connection; must be left floating or tied to GND per layout guidelines |
| DRAIN (pin 8) | High-voltage switch drain | Carries full rectified mains voltage; integrates start-up current path and valley-sensing circuitry |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 650 V / 6.5 Ω DMOS switch | Eliminates need for external HV MOSFET and gate driver, reducing BOM count and PCB area in <15 W LED drivers |
| Valley switching with AUX-based demagnetization detection | Reduces switch-on loss by >40 % vs. fixed-frequency hard-switching, improving efficiency and thermal performance |
| Adjustable oscillator with exponential RC timing | Maintains consistent loop gain across 0–75 % duty cycle, enabling stable regulation from full load to deep dimming |
| Multi-level protection suite | Includes OCP (via SOURCE), OTP (160 °C), short-circuit winding detection (0.75 V threshold), and UVLO - no external supervision IC required |
| Low standby power & frequency foldback | Reduces no-load consumption to <100 mW, meeting IEC 62301 Class D requirements for LED retrofit lamps |
Applications
| Retrofit LED Lamps | LED Ballasts |
|---|---|
Use Scenario: Replacement of incandescent or CFL bulbs in E27/E26 sockets with integrated LED modules. IC Role / Device Role / Timing Role: Primary-side SMPS controller managing constant-current output via valley-switched flyback topology. Use Value: Enables compact, cost-effective, and safety-certifiable (EN 61347-2-13) driver designs without secondary-side feedback components. |
Use Scenario: Mains-powered linear LED arrays in commercial troffer or panel lighting fixtures. IC Role / Device Role / Timing Role: Voltage-mode controller regulating output current using primary-sensing or opto-coupled feedback. Use Value: Delivers ±8 % output accuracy with minimal external parts, supporting long-life operation under continuous 24/7 use. |
| Contour Lighting | Channel Letter Lighting |
Use Scenario: Low-profile LED strips mounted along architectural edges or signage perimeters. IC Role / Device Role / Timing Role: High-efficiency flyback controller operating in discontinuous conduction mode (DCM) with valley switching. Use Value: Achieves >80 % peak efficiency and low EMI signature, satisfying FCC Part 15B Class B for indoor installations. |
Use Scenario: Illuminated channel letters in outdoor signage requiring wide temperature tolerance and surge resilience. IC Role / Device Role / Timing Role: Mains-connected SMPS controller with integrated 650 V drain rating and thermal shutdown. Use Value: Withstands ambient temperatures from −40 °C to +85 °C and survives 2 kV ESD events, ensuring field reliability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SMPS controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SSL1522T | Higher RDS(on) (12 Ω), SO14 package only - lower power capability (~10 W max) and surface-mount only | Preferred for space-constrained PCBs where 10 W output suffices and through-hole mounting is not required | Select SSL1522T only when SO14 footprint is mandated and power demand is ≤10 W; SSL1523P/N2,112 offers superior conduction efficiency and DIP8 compatibility |
| SSL1623PH | Rated for 15–25 W range; includes enhanced thermal management and higher peak current handling | Required for LED drivers exceeding 15 W output while retaining same topology and control architecture | Choose SSL1623PH when scaling beyond 15 W; SSL1523P/N2,112 remains optimal for cost-sensitive ≤15 W retrofit applications with DIP8 assembly |
Compared with SSL1522T and SSL1623PH, the SSL1523P/N2,112 uniquely balances 15 W capability, DIP8 through-hole manufacturability, and 6.5 Ω RDS(on) efficiency-making it the most suitable choice for high-volume, thermally relaxed, mains-input LED lamp designs.
Availability
SSL1523P/N2,112 is available at Aetrix Electronics and suitable for retrofit LED lamps, LED ballasts, contour lighting, and channel letter lighting requiring stable component supply and long-term production continuity.
Supply support for SSL1523P/N2,112 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 SSL152x product line was developed specifically for cost-optimized, high-reliability LED driver ICs targeting mains-powered solid-state lighting systems up to 25 W, with emphasis on integration, protection, and regulatory compliance.
FAQ
What is the maximum continuous output power supported by the SSL1523P/N2,112?
The SSL1523P/N2,112 is rated for LED driver applications up to 15 W continuous output power. This limit is determined by its 6.5 Ω RDS(on), thermal resistance (100 K/W in DIP8), and maximum junction temperature of 145 °C. Exceeding 15 W requires derating or switching to the SSL1623PH, which supports 15–25 W.
Does the SSL1523P/N2,112 require an external MOSFET for operation?
No, the SSL1523P/N2,112 integrates a 650 V, 6.5 Ω DMOS power switch and does not require an external MOSFET. The internal switch handles both high-voltage start-up current and main power conversion, enabling single-chip flyback designs with minimal external components.
How does valley switching improve efficiency in the SSL1523P/N2,112?
Valley switching in the SSL1523P/N2,112 reduces capacitive turn-on losses by initiating each primary stroke near the minimum point of drain ringing voltage. This is achieved by monitoring the DRAIN node and synchronizing switching with transformer demagnetization, lowering switching loss by up to 40 % compared to fixed-frequency hard switching.
What protection features are built into the SSL1523P/N2,112?
The SSL1523P/N2,112 includes overcurrent protection (OCP) via SOURCE pin sensing, overtemperature protection (OTP) at 160 °C, short-circuit winding protection (0.75 V threshold), undervoltage lockout (7.5 V stop, 9.5 V start), and internal REG pin clamping. All operate autonomously without external components.
Can the SSL1523P/N2,112 operate with only primary-side sensing, or is opto-coupler feedback mandatory?
The SSL1523P/N2,112 supports both configurations: it can operate as a basic voltage source using only primary-side sensing (±8 % accuracy), or achieve higher precision with opto-coupled secondary feedback. Primary sensing remains active during opto failure, providing inherent safety redundancy in LED lamp applications.
SSL1523P/N2,112 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Type:
- AC DC Offline Switcher
- Topology:
- Flyback
- Internal Switch(s):
- Yes
- Number of Outputs:
- 1
- Voltage - Supply (Min):
- 80V
- Voltage - Supply (Max):
- 276V
- Voltage - Output:
- -
- Current - Output / Channel:
- 2A
- Frequency:
- 10kHz ~ 200kHz
- Dimming:
- -
- Applications:
- Lighting
- Operating Temperature:
- -40°C ~ 145°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-DIP
SSL1523P/N2,112 FAQ
1.How can I place an order for SSL1523P/N2,112 through Aetrix?
Please submit a Request for Quotation (RFQ) for SSL1523P/N2,112 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 SSL1523P/N2,112 reliable?
The price and inventory of SSL1523P/N2,112 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SSL1523P/N2,112 is usually 5 days.
3.What payment methods are accepted for SSL1523P/N2,112?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SSL1523P/N2,112 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SSL1523P/N2,112?
SSL1523P/N2,112 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SSL1523P/N2,112 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 SSL1523P/N2,112?
For technical support, including SSL1523P/N2,112 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SSL1523P/N2,112 requirements.
6.How does Aetrix verify that SSL1523P/N2,112 is sourced from the original manufacturer or authorized distributors?
All SSL1523P/N2,112 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 SSL1523P/N2,112 meets industry standards.
7.What is the process for return or replacement of SSL1523P/N2,112?
All SSL1523P/N2,112 units undergo pre-shipment inspection (PSI). If there is an issue with SSL1523P/N2,112, 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 SSL1523P/N2,112 part is unused and in its original packaging.
Return procedure for SSL1523P/N2,112:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SSL1523P/N2,112 Tags
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BCR402RE6327HTSA1
Infineon Technologies
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BCR430UXTSA2
Infineon Technologies
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BCR420UE6433HTMA1
Infineon Technologies
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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
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