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Texas Instruments TPS92660PWP/NOPB
- Part No.:
- TPS92660PWP/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 20-PowerTSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TPS92660PWP/NOPB.pdf
- Description:
- IC LED DRIVER CTRLR PWM 20HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,259
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Product details
Overview
TPS92660PWP/NOPB from Texas Instruments is a dual-output LED driver IC integrating a non-synchronous buck controller for high-power white LEDs and a linear regulator controller for low-power red LEDs, supporting correlated color temperature (CCT) tuning. It features I²C one-time programmable (OTP) ROM current trim (±40 mV adjustment range), 80 V input voltage capability, and >95% efficiency at 800 mA output. Used in professional lighting fixtures requiring precise lumen and CCT consistency without LED binning.
For engineers reviewing the TPS92660PWP/NOPB datasheet, TPS92660PWP/NOPB pinout, TPS92660PWP/NOPB application, or TPS92660PWP/NOPB equivalent, key selection considerations include its dual-channel current control architecture, OTP-trimmed reference accuracy (202 mV ±40 mV for buck, 200 mV ±44/−50 mV for linear), thermal shutdown at 165°C, and 20-pin TSSOP exposed-pad package with validated I²C interface compliance (100–200 kHz).
Technical Context
The TPS92660PWP/NOPB implements a controlled-on-time (COT) buck controller with transconductance error amplifier feedback and internal 202 mV current sense reference, enabling pseudo-fixed-frequency operation across 8.6–80 V input. Its linear channel uses an operational amplifier driving an external N-channel MOSFET gate (LNG output) with 200 mV reference and 1.4–6.3 V output swing.
I²C OTP programming allows factory-set current calibration per string-buck channel trim range ±40 mV, linear channel +44/−50 mV-enabling consistent lumen output without LED binning. Dimming is supported via analog/PWM inputs on SADJ (buck) and LADJ (linear) pins, each with 500 Hz internal PWM generation and 0.1–2.5 V linear duty-cycle mapping.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 8.6 V to 80 V - supports wide-range AC/DC front-end supplies including 48 V industrial and 72 V commercial systems. |
| Buck Current Reference | 202 mV ±40 mV (OTP-trimmable) - sets LED current via external sense resistor (e.g., 0.25 Ω → 800 mA nominal). |
| Linear Current Reference | 200 mV +44/−50 mV (OTP-trimmable) - enables precise red-LED current matching for CCT control (e.g., 3.32 Ω → 60 mA). |
| I²C Interface Speed | 100–200 kHz - compatible with standard-mode I²C controllers; supports OTP programming and real-time register access. |
| Thermal Shutdown | 165°C with 25°C hysteresis - protects against sustained overtemperature in enclosed luminaires. |
| Reference Voltage | 3.0 V ±0.08 V (REF pin) - stable, low-drift reference for external circuitry or ADC calibration. |
| Efficiency | >95% at 800 mA, 12-LED load, 200 kHz - minimizes thermal load in space-constrained lighting modules. |
Pinout & Package
TPS92660PWP/NOPB is housed in a 20-pin TSSOP package with exposed thermal pad (DAP), optimized for high-voltage LED driver thermal management. The DAP must be soldered to PCB ground plane using ≥4 thermal vias.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 SVDD | I²C power supply | Must be decoupled with 0.1 µF ceramic capacitor; powers internal I²C logic (2.7–5.5 V range). |
| 2 SCL / 3 SDA | I²C clock/data bidirectional | Require external pull-up resistors (typically 4.7 kΩ); support OTP programming and runtime configuration. |
| 5 SADJ / 6 LADJ | Analog/PWM dimming inputs | Accept 0.1–2.5 V DC for linear PWM dimming or 2.7 V threshold PWM signals; enable independent string control. |
| 7 RON | Switching frequency setting | Connects to RC network (e.g., 51.1 kΩ + 1000 pF) to set ~200 kHz switching frequency; adjusts dynamically with VIN/VOUT. |
| 8 VO | Output overvoltage sense | Monitors buck output via resistor divider; triggers shutdown at 2.5 V (2.4 V hysteresis) to protect open-circuit LEDs. |
| 9 COMP | Buck error amplifier compensation | Requires ≥0.1 µF capacitor to GND; stabilizes COT control loop and sets dominant pole for phase margin. |
| 11 GND | System ground reference | Primary return path; connects to DAP and all local bypass capacitors (VCC, SVDD, REF). |
| 12 CS / 13 LNCS | Buck/linear current sense inputs | Differential sense nodes referenced to GND; tolerate up to 6 V common-mode; bias current <1 µA. |
| 14 LNG | Linear gate driver output | Drives external N-MOSFET gate (max 5.5 mA sink/source); operates in linear region for constant-current regulation. |
| 15 SW / 16 GATE / 17 BOOT | Buck power stage interface | GATE drives high-side N-MOSFET; BOOT supplies floating gate drive; SW connects to MOSFET source and inductor. |
| 18 VCC | Internal LDO output | 8.2 V regulated supply (7.75–8.55 V); powers internal circuitry; requires ≥1 µF ceramic bypass to GND. |
| 19 VIN | Main HV input | Accepts 8.6–80 V DC; powers internal VCC LDO and high-side switch; includes 6.4 V rising / 6.1 V falling UVLO. |
| 20 EN/UVLO | Enable & input UVLO input | 1.2 V threshold with 20 mV hysteresis; enables device when pulled above threshold; supports external UVLO resistor divider. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-channel current control | Independent buck (white LED) and linear (red LED) regulators enable precise CCT mixing without external microcontroller. |
| I²C OTP current trim | Factory-programmable ±40 mV (buck) and +44/−50 mV (linear) reference offsets eliminate LED binning and reduce BOM cost. |
| Controlled-on-time (COT) topology | Self-adjusting on-time maintains stable ~200 kHz switching across wide VIN/VOUT ranges, simplifying EMI filtering. |
| Integrated protection suite | Includes input UVLO, output OVP (VO pin), peak current limit (275 mV), BOOT UVLO (4.2–7.0 V), and thermal shutdown (165°C). |
| High-voltage robustness | Withstands 80 V continuous input and 90 V BOOT-SW transient; rated for industrial/commercial AC/DC front-end applications. |
Applications
| Professional Lighting Fixture | Industrial High-Bay Luminaire |
|---|---|
|
Use Scenario: Commercial office ceiling fixture requiring tunable white light (2700K–6500K) with flicker-free dimming. IC Role / Device Role / Timing Role: Dual-channel current controller managing white and red LED strings; I²C OTP ensures ±1% lumen matching across production units. Use Value: Eliminates LED binning cost and enables single-fixture CCT tuning via analog dimming on SADJ/LADJ pins. |
Use Scenario: Warehouse high-bay light operating from 48 V DC distributed power bus with ambient temperatures up to 85°C. IC Role / Device Role / Timing Role: Primary LED driver with integrated 80 V input handling and thermal shutdown at 165°C junction temperature. Use Value: >95% efficiency reduces heatsink size; exposed-pad TSSOP package enables direct PCB thermal coupling for reliability. |
| Commercial Retail Display Lighting | Architectural Accent Lighting |
|
Use Scenario: Retail shelf-edge lighting where precise color rendering (CRI >90) and smooth 0–100% dimming are critical. IC Role / Device Role / Timing Role: CCT-tuning engine using red+white LED mixing; I²C interface allows firmware-based dimming curve calibration. Use Value: 500 Hz internal PWM dimming avoids audible noise; ±40 mV OTP trim ensures consistent chromaticity across batches. |
Use Scenario: Outdoor architectural wall washer with IP66 enclosure and wide input voltage tolerance (36–72 V DC). IC Role / Device Role / Timing Role: High-voltage LED driver with VO-based OVP protecting against LED string open-circuit failure. Use Value: 2.5 V OVP threshold with 0.1 V hysteresis prevents false triggering during transient surges; RON-based frequency tuning simplifies EMI compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM3409HVMM/NOPB | Single-channel buck LED controller; no linear channel, no I²C OTP, no CCT tuning capability; 75 V max input. | Suitable only for monochromatic high-power LED strings; cannot replace TPS92660PWP/NOPB in CCT-mixing designs. | Select only if application requires only high-power white LED control and cost sensitivity outweighs CCT flexibility. |
| TPS92560PWPR | Pin-compatible 20-pin TSSOP; dual buck architecture (no linear channel); supports I²C OTP but lacks red-LED current control. | Designed for dual-white-string applications (e.g., warm/cool white mixing); no red LED support or linear regulation. | Use when dual high-power strings are needed but CCT tuning via red LEDs is not required; retains same footprint and I²C workflow. |
Compared with LM3409HVMM/NOPB and TPS92560PWPR, the TPS92660PWP/NOPB uniquely integrates buck + linear regulation in one IC for CCT tuning, offers factory-trimmable references via I²C OTP, and supports 80 V input-making it irreplaceable in tunable-white professional lighting where red LED integration and production consistency are mandatory.
Availability
TPS92660PWP/NOPB is available at Aetrix Electronics and suitable for professional lighting, industrial high-bay luminaires, and commercial retail display lighting requiring stable component supply, long-term manufacturing continuity, and qualified automotive-grade thermal performance.
Supply support for TPS92660PWP/NOPB 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
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and power management ICs, with decades of leadership in LED driver innovation and automotive-grade reliability.
The TPS92660 belongs to TI's high-voltage LED driver product line, designed specifically for professional and industrial tunable-white lighting systems requiring precise current matching, I²C programmability, and robust thermal/overvoltage protection.
FAQ
What is the primary function of the TPS92660PWP/NOPB in LED lighting systems?
The TPS92660PWP/NOPB serves as a dual-output LED current controller: its buck channel regulates high-power white LEDs, while its linear channel controls low-power red LEDs to enable correlated color temperature (CCT) tuning. It integrates I²C one-time programmable (OTP) ROM for factory current calibration, eliminating LED binning. The TPS92660PWP/NOPB supports input voltages up to 80 V and delivers >95% efficiency at full load, making it ideal for professional lighting fixtures requiring precise lumen and chromaticity consistency across production batches.
How does the I²C OTP ROM feature benefit manufacturing of LED luminaires using the TPS92660PWP/NOPB?
The I²C OTP ROM in the TPS92660PWP/NOPB allows manufacturers to program precise current reference offsets (±40 mV for buck, +44/−50 mV for linear) during final test, ensuring consistent LED string current-and thus lumen output-across unsorted LEDs. This eliminates costly binning processes and reduces BOM complexity. The TPS92660PWP/NOPB retains these calibrated values permanently, enabling repeatable performance in field-deployed luminaires without requiring external microcontrollers or calibration routines.
Can the TPS92660PWP/NOPB support both analog and PWM dimming simultaneously on separate LED strings?
Yes, the TPS92660PWP/NOPB supports independent dimming control: the SADJ pin governs analog or PWM dimming for the buck-driven white LED string, while the LADJ pin controls the linear-driven red LED string. Each accepts 0.1–2.5 V DC for linear PWM dimming at 500 Hz or 2.7 V threshold PWM signals. The TPS92660PWP/NOPB processes both inputs concurrently, enabling smooth, synchronized CCT shifts without cross-talk or timing conflict between channels.
What thermal management requirements apply to the TPS92660PWP/NOPB in high-power lighting designs?
The TPS92660PWP/NOPB uses a 20-pin TSSOP package with exposed thermal pad (DAP) that must be soldered to a grounded copper area with ≥4 thermal vias. Its junction-to-board thermal resistance (θJB) is 18.6°C/W, and thermal shutdown activates at 165°C with 25°C hysteresis. For continuous 800 mA operation, maintain board copper area ≥250 mm² under the DAP and ensure ambient temperature stays ≤85°C. The TPS92660PWP/NOPB's >95% efficiency minimizes self-heating, but proper PCB layout remains essential for reliability in enclosed luminaires.
Does the TPS92660PWP/NOPB require external components for basic operation, and which are mandatory?
Yes, the TPS92660PWP/NOPB requires several mandatory external components: a 1 µF ceramic capacitor from VCC to GND; 0.1 µF ceramic capacitor from SVDD to GND; ≥0.1 µF capacitor from COMP to GND; RC network (e.g., 51.1 kΩ + 1000 pF) on RON; current sense resistors on CS (buck) and LNCS (linear); and bootstrap capacitor on BOOT. The TPS92660PWP/NOPB also needs external N-channel MOSFETs-one high-side for buck switching and one low-side for linear regulation-as well as appropriate inductor and output capacitors per channel.
TPS92660PWP/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 20-PowerTSSOP (0.173", 4.40mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- DC DC Controller
- Topology:
- Step-Down (Buck)
- Internal Switch(s):
- No
- Number of Outputs:
- 2
- Voltage - Supply (Min):
- 8.6V
- Voltage - Supply (Max):
- 80V
- Voltage - Output:
- -
- Current - Output / Channel:
- -
- Frequency:
- -
- Dimming:
- PWM
- Applications:
- Lighting
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-HTSSOP
TPS92660PWP/NOPB FAQ
1.How can I place an order for TPS92660PWP/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS92660PWP/NOPB 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 TPS92660PWP/NOPB reliable?
The price and inventory of TPS92660PWP/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS92660PWP/NOPB is usually 5 days.
3.What payment methods are accepted for TPS92660PWP/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS92660PWP/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS92660PWP/NOPB?
TPS92660PWP/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS92660PWP/NOPB 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 TPS92660PWP/NOPB?
For technical support, including TPS92660PWP/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS92660PWP/NOPB requirements.
6.How does Aetrix verify that TPS92660PWP/NOPB is sourced from the original manufacturer or authorized distributors?
All TPS92660PWP/NOPB 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 TPS92660PWP/NOPB meets industry standards.
7.What is the process for return or replacement of TPS92660PWP/NOPB?
All TPS92660PWP/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with TPS92660PWP/NOPB, 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 TPS92660PWP/NOPB part is unused and in its original packaging.
Return procedure for TPS92660PWP/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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