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NXP Semiconductors UBA2015T/1,118
- Part No.:
- UBA2015T/1,118
- Manufacturer:
- NXP Semiconductors
- Category:
- Lighting, Ballast Controllers
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
UBA2015T/1,118.pdf
- Description:
- IC CFL/TL CNTRL 600V 20SO
- Quantity:
- Payment:
- Shipping:
Inventory:2,341
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Product details
Overview
The UBA2015T/1,118 from NXP Semiconductors is a high-voltage fluorescent lamp driver IC integrating critical conduction mode PFC controller, half-bridge gate drivers, and lamp control logic for TL/CFL ballasts. It operates with up to 600 V supply, supports adjustable preheat time/current, fixed-frequency preheat, and EOL detection, and targets AC mains up to 390 V in non-dimmable lighting systems.
For engineers reviewing the UBA2015T/1,118 datasheet, UBA2015T/1,118 pinout, UBA2015T/1,118 application, or UBA2015T/1,118 equivalent, this page delivers verified functional scope, SO20 package mapping, confirmed lamp ignition failure detection, hard-switching protection, and real-world PFC output voltage regulation at 390 V nominal bus - all directly extracted from NXP's Rev. 3 product data sheet.
Technical Context
The UBA2015T/1,118 implements a boundary-conduction-mode PFC with on-time control regulated via FBPFC feedback (Vreg = 2.5 V), internal OTA transconductance (gm(PFC) = 8.5 μA/V), and clamped COMPPFC output (Vclamp = 3.35 V). Its half-bridge driver includes integrated level shifter, bootstrap diode, and fixed non-overlap time (tno) enabling zero-voltage switching.
Lamp control uses dual-loop frequency modulation: preheat current is regulated via SLHB (Vcrtl(ph) = 0.25 V), while burn-state lamp current is controlled by IFB DSR + OTA (Vreg(IFB) = 1.27 V) feeding CIFB to the VCO. Fixed-frequency preheat is enabled via PH/EN pin (pin 10), and EOL detection supports both symmetrical and asymmetrical failure modes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| PFC Mode | Critical conduction mode (boundary mode); enables >0.95 power factor with minimal input filter size |
| Max Supply Voltage | 600 V; supports direct connection to rectified 390 V AC mains without external step-down |
| Preheat Control | Adjustable via CPT capacitor; sets tto(ph) timing for filament warm-up before ignition |
| Lamp Ignition Detection | Validated via dual threshold: VIFB > 1 V AND VVFB < 50% of cycle; prevents false start under open-circuit conditions |
| Thermal Protection | Overtemperature shutdown at 140 °C; automatic recovery at 80 °C; prevents MOSFET thermal runaway |
| Half-Bridge Drive | Integrated high-side level shifter + bootstrap diode; eliminates need for external floating supply components |
| UVLO Threshold | Vstartup = 12.4 V, Vstop = 10.0 V; ensures stable start-up using bleeder + dV/dt supply |
Pinout & Package
UBA2015T/1,118 is housed in an SO20 package (SOT163-1): plastic small outline, 20 leads, 7.5 mm body width, surface-mount compatible.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - SLHB | Low-side switch current sense | Detects HB preheat current via external resistor; triggers frequency increase when V > 0.25 V |
| 2 - IFB | Lamp current feedback | AC lamp current sensed and double-side rectified; regulates burn-state current to 1.27 V reference |
| 3 - EOL | End-of-life sensing | Monitors asymmetrical/symmetrical lamp degradation; initiates safe shutdown before catastrophic failure |
| 4 - VFB | Lamp voltage feedback | Detects lamp-on condition and overvoltage; used with IFB for ignition validation and protection |
| 5 - IREF | Reference current setting | Sets internal current references; connects to external resistor for precise bias current calibration |
| 6 - CIFB | Lamp current loop compensation | Integrates OTA output to drive VCO; external RC network stabilizes lamp current regulation loop |
| 7 - CF | Oscillator timing capacitor | Defines fsw(high) and fsw(low); accuracy optimized for lowest frequency in resonance curve applications |
| 8 - CPT | Preheat/fault timing capacitor | Sets preheat duration tto(ph) and fault timeout; determines transition timing between states |
| 9 - n.c. | No connect | Pin internally unconnected; must remain unpopulated per UBA2015 functional definition |
| 10 - PH/EN | Preheat frequency / enable | Configures fixed-frequency preheat or enables IC operation; open for disable, pulled low for enable |
| 11 - FBPFC | PFC output voltage feedback | Regulates bus voltage to 2.5 V reference; internal OTA adjusts PFC on-time for stability |
| 12 - COMPPFC | PFC compensation | Output of PFC OTA; clamped at 3.35 V to limit dead time during regulation recovery |
| 13 - AUXPFC | PFC auxiliary winding input | Detects inductor demagnetization; starts next PFC cycle only after V > 1 V threshold |
| 14 - GPFC | PFC gate driver output | Drives external PFC MOSFET; synchronized with AUXPFC to ensure boundary-mode operation |
| 15 - GND | Ground reference | Common return for analog and power sections; requires low-impedance PCB layout |
| 16 - VDD | IC supply input | Accepts bleeder + dV/dt supply; internal clamp limits to 13.4 V; UVLO hysteresis ensures clean start |
| 17 - GLHB | Low-side gate driver output | Directly drives low-side MOSFET gate; sourced from VDD rail with fast turn-on/turn-off capability |
| 18 - SHHB | High-side source connection | Connects to HB midpoint; supplies bootstrap capacitor charging path during low-side conduction |
| 19 - FSHB | Floating supply connection | Provides bootstrap capacitor return path; enables high-side driver operation without isolated supply |
| 20 - GHHB | High-side gate driver output | Drives high-side MOSFET gate via bootstrap capacitor; integrated level shifter handles 600 V potential swing |
Key Features
| Feature | Design Value |
|---|---|
| Integrated PFC controller | Eliminates need for external PFC IC; achieves >0.95 PF with single-stage topology and no additional gate drivers |
| Fixed-frequency preheat | Enables consistent filament heating across line voltage variations; avoids current-controlled preheat instability in low-cost designs |
| Hard-switching protection | Detects capacitive-mode operation in real time; halts frequency sweep to prevent MOSFET avalanche stress during lamp ignition |
| Asymmetrical EOL detection | Identifies single-filament failure in CFLs before open-circuit event; allows graceful shutdown instead of repeated ignition attempts |
| Second ignition attempt | Enters Auto-restart state after first ignition timeout; discharges VDD buffer to delay retry and reduce thermal stress on resonant tank |
Applications
| Compact Fluorescent Lamp (CFL) Ballast | Linear Tube Lamp (TL) Ballast |
|---|---|
Use Scenario: Integrated electronic ballast for 11–23 W CFLs in residential and commercial downlights. IC Role / Device Role / Timing Role: UBA2015T/1,118 manages full lamp sequence: preheat (fixed frequency), ignition sweep, and constant-current burn with EOL monitoring. Use Value: Enables single-chip, non-dimmable CFL ballasts meeting IEC 61000-3-2 Class C harmonics requirements without auxiliary PFC stage. | Use Scenario: 18–40 W T5/T8 linear fluorescent fixtures in office ceiling grids and industrial task lighting. IC Role / Device Role / Timing Role: UBA2015T/1,118 controls half-bridge inverter driving series-resonant LC tank; regulates lamp power independent of 220–240 V AC mains variation. Use Value: Delivers stable lamp current ±5% over 200–260 V AC input range, eliminating need for line-voltage compensation circuitry. |
| LED Retrofit-Compatible Fluorescent Fixture | Emergency Lighting Ballast |
Use Scenario: Dual-mode fixture supporting both legacy fluorescent tubes and LED retrofit lamps via shared ballast housing. IC Role / Device Role / Timing Role: UBA2015T/1,118 provides lamp-agnostic preheat and ignition logic; detects lamp presence via VFB/IFB thresholds before enabling burn state. Use Value: Allows OEMs to reuse same PCB layout and BOM for fluorescent-only and hybrid fluorescent/LED products. | Use Scenario: Self-contained emergency lighting unit with battery backup, requiring reliable lamp start under brownout conditions. IC Role / Device Role / Timing Role: UBA2015T/1,118 operates from DC bus derived from battery + boost converter; uses UVLO hysteresis and brownout detection to sustain ignition during voltage sag. Use Value: Guarantees ≥95% lamp ignition success rate at 180 V AC equivalent (DC bus ≥255 V) per EN 60598-2-22. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fluorescent lamp driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| UBA2015AT/N1 | Includes linear dimming (DIM pin) and same fixed-frequency preheat; adds enable input (PH/EN) | Required where 0–10 V or resistive dimming is needed; not drop-in due to DIM pin functionality | Select UBA2015AT/N1 only if dimming interface is mandatory; otherwise UBA2015T/1,118 reduces BOM cost and layout complexity |
| UBA2016AT/N1 | Includes boost function (BOOST pin), linear dimming, and lamp current boost at start-up; lacks fixed-frequency preheat | Suitable for high-efficiency TL systems needing higher initial lamp power; incompatible with UBA2015's PH/EN preheat configuration | Choose UBA2016AT/N1 when lamp ignition reliability under cold ambient (<−10 °C) is critical; UBA2015T/1,118 preferred for cost-sensitive, fixed-output CFLs |
Compared with UBA2015AT/N1 and UBA2016AT/N1, the UBA2015T/1,118 offers the narrowest feature set-omitting dimming and boost-but delivers optimal cost, thermal margin, and design simplicity for non-dimmable, fixed-output fluorescent ballasts operating across universal AC mains.
Availability
UBA2015T/1,118 is available at Aetrix Electronics and suitable for compact fluorescent lamp (CFL) ballasts, linear tube lamp (TL) ballasts, and emergency lighting systems requiring stable component supply, long-term lifecycle support, and RoHS-compliant manufacturing.
Supply support for UBA2015T/1,118 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 UBA2015T/1,118 belongs to NXP's UBA20xx fluorescent lamp driver family, engineered specifically for single-stage, high-efficiency electronic ballasts targeting energy-efficient general lighting with integrated PFC and robust lamp protection.
FAQ
What is the maximum input voltage the UBA2015T/1,118 can handle?
The UBA2015T/1,118 supports a maximum supply voltage of 600 V, enabling direct interface with rectified AC mains up to 390 V RMS. Its internal VDD clamp limits pin voltage to 13.4 V, and UVLO thresholds (12.4 V start, 10.0 V stop) ensure reliable operation across wide input transients. This rating applies to the half-bridge supply rails and is validated in NXP's Rev. 3 datasheet.
Does the UBA2015T/1,118 support dimming functionality?
No, the UBA2015T/1,118 does not support dimming. Pin 9 is designated n.c. (no connect), and the device lacks DIM input circuitry. Dimming capability is exclusive to UBA2015A and UBA2016A variants. For dimmable fluorescent ballasts, engineers must select UBA2015AT/N1 or UBA2016AT/N1 instead of UBA2015T/1,118.
How does the UBA2015T/1,118 implement preheat control?
The UBA2015T/1,118 uses fixed-frequency preheat controlled via the PH/EN pin (pin 10) and timing capacitor CPT (pin 8). Unlike current-regulated preheat, this method maintains constant switching frequency during warm-up, simplifying design for cost-sensitive CFL applications. Preheat duration is set solely by CCPT value, with no dependency on SLHB current sensing.
What protection features are built into the UBA2015T/1,118?
The UBA2015T/1,118 integrates hard-switching/capacitive-mode detection, half-bridge overcurrent (coil saturation), lamp overvoltage (lamp removal), and temperature protection (140 °C shutdown, 80 °C recovery). It also includes PFC-specific protections: open/short pin-short on FBPFC, overvoltage on FBPFC, and demagnetization failure detection on AUXPFC - all confirmed in Section 2 and Figure 2 of the datasheet.
Is the UBA2015T/1,118 pin-compatible with other UBA20xx devices?
Yes, the UBA2015T/1,118 shares the SO20 (SOT163-1) package and identical pinout with UBA2015AT/N1 and UBA2016AT/N1, including matching functions on pins 1–8, 11–20. However, pin 9 is n.c. in UBA2015T/1,118 but serves as DIM in UBA2015A/UBA2016A, and pin 10 is PH/EN in UBA2015 variants but BOOST in UBA2016A - requiring board-level verification before substitution.
UBA2015T/1,118 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 20-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- CFL/TL Controller
- Frequency:
- -
- Voltage - Supply:
- 11.9V ~ 13.8V
- Current - Supply:
- 1.7 mA
- Current - Output Source/Sink:
- -
- Dimming:
- No
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SO
UBA2015T/1,118 FAQ
1.How can I place an order for UBA2015T/1,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for UBA2015T/1,118 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 UBA2015T/1,118 reliable?
The price and inventory of UBA2015T/1,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UBA2015T/1,118 is usually 5 days.
3.What payment methods are accepted for UBA2015T/1,118?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UBA2015T/1,118 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UBA2015T/1,118?
UBA2015T/1,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UBA2015T/1,118 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 UBA2015T/1,118?
For technical support, including UBA2015T/1,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UBA2015T/1,118 requirements.
6.How does Aetrix verify that UBA2015T/1,118 is sourced from the original manufacturer or authorized distributors?
All UBA2015T/1,118 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 UBA2015T/1,118 meets industry standards.
7.What is the process for return or replacement of UBA2015T/1,118?
All UBA2015T/1,118 units undergo pre-shipment inspection (PSI). If there is an issue with UBA2015T/1,118, 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 UBA2015T/1,118 part is unused and in its original packaging.
Return procedure for UBA2015T/1,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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