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Texas Instruments TPS92660PWPR/NOPB
- Part No.:
- TPS92660PWPR/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 20-PowerTSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TPS92660PWPR/NOPB.pdf
- Description:
- IC LED DRIVER CTRLR PWM 20HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,427
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Product details
Overview
TPS92660PWPR/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 delivers up to 80 V input voltage handling, 202 mV switching current reference (±40 mV trim range), 200 mV linear current reference, and >95% efficiency in typical configurations.
For engineers reviewing the TPS92660PWPR/NOPB datasheet, TPS92660PWPR/NOPB pinout, TPS92660PWPR/NOPB application, or TPS92660PWPR/NOPB equivalent, this page provides verified technical context on I²C OTP current trimming, dual-channel dimming via SADJ/LADJ, thermal shutdown at 165°C, and 20-pin TSSOP exposed-pad package implementation for professional lighting systems.
Technical Context
The TPS92660PWPR/NOPB implements controlled-on-time (COT) regulation for its buck channel and transconductance error amplifier feedback (gM = 600 µA/V) with COMP pin compensation. Its linear channel uses an operational amplifier driving LNG to regulate LED current via external N-channel MOSFETs operating in linear mode.
It supports two independent dimming paths: analog/PWM dimming on SADJ (buck) and LADJ (linear) pins with fixed 500 Hz internal PWM frequency, 0.1–2.5 V triangle input range, and 2.7 V PWM threshold. Current trim is performed once via I²C interface to OTP ROM, enabling precise lumen-matching without LED binning.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 8.6 V to 80 V - Enables direct AC/DC front-end integration without pre-regulation for industrial lighting. |
| Switching Current Reference | 202 mV ±40 mV - Sets LED current via CS sense resistor; trimmed once via I²C OTP for production consistency. |
| Linear Current Reference | 200 mV ±44 mV - Sets red LED string current via LNCS; enables CCT mixing with white LEDs. |
| I²C Interface Speed | 100–200 kHz - Supports factory programming of current trim values during fixture manufacturing. |
| Thermal Shutdown | 165°C with 25°C hysteresis - Protects against sustained overloads; junction temperature monitored internally. |
| Reference Voltage | 3.0 V ±40 mV - Stable precision reference (REF pin) for external circuitry or calibration sensing. |
| Efficiency | >95% - Achieved at 48 V input, 800 mA load, 12-LED string; minimizes thermal design burden in enclosed fixtures. |
Pinout & Package
TPS92660PWPR/NOPB is housed in a 20-pin TSSOP package with exposed thermal pad (DAP), optimized for high-voltage LED driver thermal management and PCB layout compatibility with industrial lighting modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SVDD | I²C power supply | Provides 2.7–5.5 V bias for I²C logic; must be decoupled independently from VCC. |
| SCL / SDA | I²C serial interface | Enable one-time programmable (OTP) current trim; require pull-up resistors per I²C standard. |
| SADJ / LADJ | Analog/PWM dimming inputs | Control buck and linear channel brightness independently; accept 0.1–2.5 V analog or 500 Hz PWM signals. |
| RON | Frequency setting | Connects to RC network (RT/CT) to set buck switching frequency; determines EMI profile and inductor size. |
| VO | Output voltage sense | Monitors buck output via resistor divider; triggers 2.5 V overvoltage protection to disable GATE. |
| COMP | Error amplifier compensation | External capacitor (≥0.1 µF) sets dominant pole; stabilizes COT control loop for wide input/output conditions. |
| GATE / LNG | Gate drivers | GATE drives high-side N-MOSFET; LNG drives low-side N-MOSFET in linear mode; both support fast switching. |
| VIN / VCC / EN/UVLO | Power and enable | VIN accepts up to 80 V; VCC regulated at 8.2 V; EN/UVLO enables device at 1.2 V threshold with hysteresis. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-channel CCT control | Simultaneous regulation of white (buck) and red (linear) LED strings enables precise correlated color temperature tuning in architectural lighting. |
| I²C OTP current trim | One-time programmable memory stores trimmed current values per channel, eliminating LED binning and ensuring consistent lumen output across production batches. |
| Integrated protection suite | Includes input UVLO, output overvoltage (VO), peak current limit (275 mV), thermal shutdown (165°C), and BOOT UVLO - reduces external component count. |
| High-efficiency architecture | Buck channel achieves >95% efficiency; linear channel optimized for low-drop applications (e.g., 4-red-LED strings), minimizing MOSFET power dissipation. |
| Flexible dimming interface | SADJ/LADJ accept analog voltage (0.1–2.5 V) or PWM input (≤10 ms period); no external microcontroller required for basic dimming control. |
Applications
| Professional Lighting | Industrial High-Bay Fixtures |
|---|---|
Use Scenario: Tunable-white luminaires for retail and office spaces requiring dynamic CCT adjustment from 2700K to 6500K. IC Role / Device Role: Dual-channel current controller synchronizing white and red LED strings to maintain target chromaticity coordinates. Use Value: Eliminates need for multiple discrete drivers; single IC enables accurate, stable CCT without post-production calibration. |
Use Scenario: High-lumen LED fixtures mounted in warehouses with 480 VAC input and harsh thermal environments. IC Role / Device Role: Primary LED current regulator accepting up to 80 V DC input derived from rectified AC mains. Use Value: 80 V input rating and 125°C operating junction temperature support direct integration into high-voltage industrial power stages. |
| Commercial Outdoor Signage | Architectural Accent Lighting |
Use Scenario: RGBW signage panels where red LED intensity must track white LED dimming for consistent color fidelity. IC Role / Device Role: Independent current control of red (linear) and white (buck) channels with synchronized analog dimming via shared SADJ/LADJ signal. Use Value: Maintains color point accuracy across 0–100% dimming range using single control voltage - no firmware or DAC required. |
Use Scenario: Low-profile wall-washers with tight thermal constraints and requirement for smooth 0–10 V dimming compatibility. IC Role / Device Role: LED driver with REF pin providing stable 3.0 V reference for external 0–10 V interface circuitry. Use Value: Integrated 3.0 V reference eliminates need for external voltage reference IC, reducing BOM cost and board area. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel LED current control applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM3466 | Single-channel linear LED controller with adjustable current sense; no buck stage or I²C interface. | Lacks integrated buck controller and OTP trim; suitable only for low-voltage, low-power red LED strings. | Select when only linear regulation is needed and CCT tuning is handled externally. |
| TPS92630 | Dual buck controller (no linear channel); supports I²C OTP trim; max input 65 V; no LNG output. | Cannot drive red LEDs directly; requires external linear stage for CCT mixing; lower input voltage ceiling. | Choose for higher-power white-only dual-string designs where thermal headroom favors all-buck topology. |
Compared with LM3466 and TPS92630, the TPS92660PWPR/NOPB uniquely integrates buck + linear regulation in one die with I²C OTP trim, enabling compact, thermally efficient CCT-tunable lighting without external current-setting DACs or secondary controllers.
Availability
TPS92660PWPR/NOPB is available at Aetrix Electronics and suitable for professional lighting, industrial high-bay fixtures, and commercial outdoor signage requiring stable component supply, long-term manufacturability, and automotive-grade reliability validation.
Supply support for TPS92660PWPR/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 technologies, with decades of expertise in LED driver innovation and automotive-grade reliability.
The TPS92660PWPR/NOPB belongs to TI's high-voltage LED driver product line, designed specifically for tunable-white and multi-color LED lighting systems requiring precise current matching, thermal resilience, and factory-programmable calibration.
FAQ
What is the primary function of the TPS92660PWPR/NOPB in an LED lighting system?
The TPS92660PWPR/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 OTP ROM for one-time current trim, eliminating LED binning in production. The TPS92660PWPR/NOPB supports up to 80 V input and delivers >95% efficiency in typical configurations.
How does the I²C OTP ROM feature benefit manufacturing of LED luminaires?
The I²C OTP ROM in the TPS92660PWPR/NOPB allows manufacturers to program precise LED current trim values once during final assembly, ensuring consistent lumen output across fixtures without sorting LEDs by bin. This reduces production cost and complexity. The TPS92660PWPR/NOPB supports standard 100–200 kHz I²C communication for integration into automated programming stations.
Can the TPS92660PWPR/NOPB drive both white and red LED strings simultaneously?
Yes - the TPS92660PWPR/NOPB is explicitly designed for simultaneous white/red LED control: the buck channel drives white LEDs (via GATE/SW/CS), and the linear channel drives red LEDs (via LNG/LNCS). This enables CCT tuning in tunable-white luminaires. The TPS92660PWPR/NOPB's 200 mV linear reference and 202 mV buck reference are independently trimmable via I²C OTP.
What protection features are built into the TPS92660PWPR/NOPB?
The TPS92660PWPR/NOPB includes input undervoltage lockout (EN/UVLO), output overvoltage protection (VO pin at 2.5 V), peak switch current limiting (275 mV threshold), BOOT UVLO (5.6 V rising), and thermal shutdown (165°C). All protections trigger automatic recovery or hiccup-mode operation. These features reduce external protection components and improve system robustness in the TPS92660PWPR/NOPB-based design.
What is the role of the SADJ and LADJ pins on the TPS92660PWPR/NOPB?
SADJ controls dimming of the buck channel (white LEDs); LADJ controls dimming of the linear channel (red LEDs). Both accept analog voltage (0.1–2.5 V) for linear PWM dimming at ~500 Hz, or external PWM signals with ≤10 ms period. The TPS92660PWPR/NOPB interprets rising edges to enter PWM mode and uses 2.7 V threshold for reliable signal detection.
TPS92660PWPR/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 20-PowerTSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- 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
TPS92660PWPR/NOPB FAQ
1.How can I place an order for TPS92660PWPR/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS92660PWPR/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 TPS92660PWPR/NOPB reliable?
The price and inventory of TPS92660PWPR/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS92660PWPR/NOPB is usually 5 days.
3.What payment methods are accepted for TPS92660PWPR/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS92660PWPR/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS92660PWPR/NOPB?
TPS92660PWPR/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS92660PWPR/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 TPS92660PWPR/NOPB?
For technical support, including TPS92660PWPR/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS92660PWPR/NOPB requirements.
6.How does Aetrix verify that TPS92660PWPR/NOPB is sourced from the original manufacturer or authorized distributors?
All TPS92660PWPR/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 TPS92660PWPR/NOPB meets industry standards.
7.What is the process for return or replacement of TPS92660PWPR/NOPB?
All TPS92660PWPR/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with TPS92660PWPR/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 TPS92660PWPR/NOPB part is unused and in its original packaging.
Return procedure for TPS92660PWPR/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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