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Texas Instruments TPS92633MPWPR
- Part No.:
- TPS92633MPWPR
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 20-PowerTSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TPS92633MPWPR.pdf
- Description:
- IC LED DRVR LINEAR PWM 20HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,914
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Product details
Overview
TPS92633MPWPR from Texas Instruments is a three-channel high-side linear LED driver IC designed for automotive and industrial lighting systems requiring precise, independent current regulation per channel. It delivers up to 150 mA per channel with ±5% accuracy over –55°C to +150°C, supports off-board brightness binning via ICTRL, and uses external shunt resistors (RESx) to thermally share power dissipation. It operates from 4.5 V to 40 V and integrates diagnostics including LED open/short-to-GND detection with auto-recovery.
For engineers reviewing the TPS92633MPWPR datasheet, TPS92633MPWPR pinout, TPS92633MPWPR application, or TPS92633MPWPR equivalent, this page provides verified technical context, thermal sharing implementation guidance, fault bus configuration options (one-fails-all-fail vs. N-1), dropout voltage behavior at 150 mA, and real-world diagnostic deglitch timing values - all critical for robust LED system design in harsh environments.
Technical Context
The TPS92633MPWPR implements a high-side linear current regulation architecture using external sense resistors (R(SNSx)) and programmable V(CS_REG) controlled via ICTRL voltage. Each channel independently regulates output current by maintaining a precision voltage drop across its R(SNSx), with V(CS_REG) adjustable from 46 mV to 416 mV depending on ICTRL voltage (0–2.75 V).
It features dual-output per channel (OUTx and RESx) enabling thermal sharing: up to 95% of total channel current can be routed through RESx to an external shunt resistor, reducing on-die power dissipation. Diagnostics include configurable fault bus (FAULT), LED open-circuit detection (180–420 mV threshold), short-to-GND detection (0.855–1.26 V), and single LED short detection with retry logic (10 ms interval, 300 µs period).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5 V to 40 V - supports wide automotive battery range including cold-crank (4.5 V) and load-dump (40 V) conditions without external protection. |
| Max Output Current per Channel | 150 mA - enables driving mid-power LED strings (e.g., 3–5 white LEDs @ 20–30 mA each) with full thermal headroom. |
| Current Accuracy | ±5% over –55°C to +150°C - ensures consistent luminance across extreme ambient temperatures without recalibration. |
| Dropout Voltage | 600 mV max at 150 mA - minimizes required headroom, allowing operation with low forward-voltage LED strings or high-temperature derating. |
| Fault Detection Deglitch Time | 125 µs for LED open/short - suppresses false triggers from transient supply noise while maintaining fast fault response. |
| Thermal Shutdown Threshold | 157–187°C with 15°C hysteresis - protects against sustained overload while enabling recovery after cooling. |
| Supply Current in Fault Mode | 0.21–0.45 mA - reduces system-level power draw during fault events, critical for always-on automotive modules. |
Pinout & Package
TPS92633MPWPR is housed in a 20-pin HTSSOP (PWP) package measuring 6.50 mm × 4.40 mm with exposed thermal pad for enhanced heat dissipation. The package supports JEDEC-standard reflow and is qualified for automotive AEC-Q100 Grade 1 (–40°C to +125°C ambient).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SUPPLY (1) | Power input | Primary device supply rail; accepts 4.5–40 V; internal POR activates above 4.0 V. |
| EN (2) | Enable control | Active-high digital enable; pulls device into ultra-low shutdown mode (<26 µA) when low. |
| IN1–IN3 (3–5) | Current sense inputs | High-side sense node for R(SNSx); voltage drop across R(SNSx) sets channel current via V(CS_REG). |
| DIAGEN (6) | Diagnostics enable | Disables LED open and single-short detection during low-dropout operation to prevent false faults. |
| PWM1–PWM3 (7–9) | Brightness control | Independent PWM inputs per channel; controls ON/OFF timing of OUTx/RESx outputs with <5 µs delay. |
| FAULT (10) | Fault bus output | Open-drain output configurable as one-fails-all-fail or N-1; sinks 2–4 mA when active. |
| ICTRL (11) | Analog current reference | Outputs 10×I(IREF); voltage here (0–2.75 V) sets V(CS_REG) and thus all three channel currents. |
| SLS_REF (12) | Single-short threshold | Reference for single LED short detection; ratio to IREF sets detection sensitivity. |
| IREF (13) | Reference current source | 100 µA (typ.) current source; requires 12.3 kΩ to GND for nominal operation; voltage regulated to 1.235 V. |
| GND (14) | Ground reference | System ground return; connects to thermal pad for optimal thermal performance. |
| OUT3–OUT1 (15–19) | Main current outputs | High-side current outputs; each drives LED anode directly; requires 10-nF capacitor to GND. |
| RES3–RES1 (16,18,20) | Thermal-sharing outputs | Secondary current paths; route up to 95% of channel current to external shunt resistors for off-die power dissipation. |
Key Features
| Feature | Design Value |
|---|---|
| Three independent high-precision current channels | Each regulates 5–150 mA with ±5% accuracy over full temperature range, enabling mixed-brightness LED arrays without per-channel DACs. |
| External thermal sharing via RESx outputs | Redirects up to 95% of channel current to external shunt resistors, reducing die temperature rise and eliminating need for large heatsinks. |
| Off-board brightness binning support | ICTRL pin accepts remote resistor networks (e.g., LED board-mounted binning resistors), simplifying manufacturing and enabling per-unit luminance calibration. |
| Configurable fault bus topology | FAULT pin supports either one-fails-all-fail (system shutdown) or N-1 (only failed channel disabled) modes via external pull-up/pull-down. |
| Integrated NTC-based current derating | ICTRL accepts NTC thermistors to automatically reduce LED current as temperature rises, preventing thermal runaway without MCU intervention. |
| Auto-recovering LED diagnostics | Detects open, short-to-GND, and single-LED short faults with 125 µs deglitch and automatic recovery-no host controller reset required. |
Applications
| Automotive Exterior Lighting | Industrial Status Indicators |
|---|---|
Use Scenario: Driving position lamps, side markers, and daytime running lights (DRLs) in vehicles with 12 V/24 V battery systems. IC Role / Device Role / Timing Role: High-side linear LED driver providing three independent, thermally managed current channels with integrated diagnostics. Use Value: Enables compact, reliable lighting modules meeting AEC-Q100 requirements while supporting off-board binning for consistent color/luminance across production units. |
Use Scenario: Powering multi-color status LEDs on industrial HMIs, PLCs, and safety-rated panels where long-term reliability and fault visibility are critical. IC Role / Device Role / Timing Role: Precision current regulator with auto-recovering fault detection and thermal derating for unattended operation. Use Value: Eliminates need for external fault monitoring circuitry; single-LED short detection prevents cascading failures in parallel LED configurations. |
| Commercial Signage Backlighting | Medical Equipment Indicator Panels |
Use Scenario: Uniform backlighting for channel letters, architectural signage, and retail displays powered from 24 V DC supplies. IC Role / Device Role / Timing Role: Three-channel constant-current driver with PWM dimming support and thermal sharing to manage heat in enclosed enclosures. Use Value: Reduces thermal stress on PCB by routing >90% of power dissipation to external resistors, extending LED lifetime and simplifying thermal design. |
Use Scenario: Driving red/green/blue indicator LEDs on medical devices requiring Class II isolation, low EMI, and fail-safe diagnostics. IC Role / Device Role / Timing Role: Isolated high-side driver with low fault-mode current (0.33 mA typ.) and precise current matching across channels. Use Value: Meets IEC 60601-1 leakage and safety requirements; ±5% current accuracy ensures consistent visual feedback across operating temperature range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar three-channel high-side LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS92630QPWPRQ1 | Automotive-grade (AEC-Q100 Grade 0), identical pinout and feature set but rated for –40°C to +150°C junction; lacks off-board binning support via ICTRL. | Targeted at safety-critical automotive lighting (e.g., brake lamps) where extended temperature range and qualification are mandatory. | Select TPS92630QPWPRQ1 only if AEC-Q100 Grade 0 qualification and higher junction temp rating are required; otherwise TPS92633MPWPR offers superior binning flexibility. |
| TPS92830QPWPRQ1 | Four-channel version with identical thermal sharing, diagnostics, and ICTRL architecture; adds fourth channel and enhanced fault reporting via dedicated SLS pin. | Suitable for systems requiring >3 LED strings (e.g., adaptive front lighting) or needing discrete single-LED short indication without bus arbitration. | Choose TPS92633MPWPR for cost-optimized 3-channel designs; upgrade to TPS92830QPWPRQ1 only when fourth channel or enhanced diagnostics justify added complexity. |
Compared with TPS92630QPWPRQ1 and TPS92830QPWPRQ1, the TPS92633MPWPR uniquely balances automotive-ready performance (150°C junction), off-board binning capability, and thermal sharing in a 3-channel footprint-making it optimal for cost-sensitive, high-reliability LED systems where manufacturing flexibility and thermal management are prioritized over extended qualification or extra channels.
Availability
TPS92633MPWPR is available at Aetrix Electronics and suitable for automotive exterior lighting, industrial status indicators, commercial signage backlighting, and medical equipment indicator panels requiring stable component supply, long-lifecycle support, and traceable sourcing.
Supply support for TPS92633MPWPR 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 deep expertise in automotive and industrial LED driver innovation.
The TPS92633MPWPR belongs to TI's high-reliability LED driver product line, engineered specifically for thermally constrained, safety-aware lighting systems that demand precision current regulation, intelligent thermal management, and comprehensive fault coverage.
FAQ
What is the maximum continuous output current per channel for the TPS92633MPWPR?
The TPS92633MPWPR supports up to 150 mA of continuous output current per channel under recommended operating conditions (TJ ≤ 150°C, V(SUPPLY) ≥ 4.5 V). This value is confirmed in Section 6.5 Electrical Characteristics of the datasheet, where I(OUTx_Tot) is specified as 150 mA maximum at 100% duty cycle. Derating applies above 125°C ambient due to thermal limits.
How does the TPS92633MPWPR implement thermal sharing, and what is the role of the RESx pins?
The TPS92633MPWPR implements thermal sharing by providing two parallel current paths per channel: OUTx (main output) and RESx (thermal-sharing output). Up to 95% of the total channel current can be routed through RESx to an external shunt resistor, moving power dissipation off the IC die. This is explicitly defined in Table 5-1 Pin Functions and Section 7.3.6, where RESx is described as "Current output for channel x with external thermal resistor."
Can the TPS92633MPWPR support off-board LED brightness binning, and how is it configured?
Yes, the TPS92633MPWPR supports off-board brightness binning via the ICTRL pin. A remote resistor (R(ICTRL2)) is placed on the LED board, connected in series with a local decoupling resistor (R(ICTRL1)) near the IC. This network sets V(ICTRL), which determines V(CS_REG) and thus channel current. Figure 7-1 and Section 7.3.5.1 confirm this architecture, specifying that R(ICTRL2) "can be placed in LED board as real binning resistor."
What fault conditions does the TPS92633MPWPR detect, and do they recover automatically?
The TPS92633MPWPR detects LED open-circuit, LED short-to-GND, and single LED short-circuit faults - all with auto-recovery. Recovery occurs after deglitch timing (125 µs for open/short, 135 µs for single-short) and, for single-short, includes retry logic with 10 ms interval and 300 µs period (Section 6.6 Timing Requirements). These behaviors are verified in Figures 6-11 through 6-16 and Section 7.3.7.
What is the purpose of the DIAGEN pin on the TPS92633MPWPR, and when should it be asserted?
The DIAGEN pin disables LED open-circuit and single LED short-circuit detection during low-dropout operation to prevent false triggering when V(INx) – V(OUTx) falls below the detection threshold. It should be held high during normal operation and pulled low only when the device operates near dropout (e.g., low supply or high LED VF), as specified in Table 5-1 and Section 7.3.7.2.
TPS92633MPWPR 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:
- Linear
- Topology:
- Constant Current
- Internal Switch(s):
- No
- Number of Outputs:
- 3
- Voltage - Supply (Min):
- 4.5V
- Voltage - Supply (Max):
- 40V
- Voltage - Output:
- 0V ~ 40V
- Current - Output / Channel:
- -
- Frequency:
- -
- Dimming:
- PWM
- Applications:
- General Purpose
- Operating Temperature:
- -55°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-HTSSOP
TPS92633MPWPR FAQ
1.How can I place an order for TPS92633MPWPR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS92633MPWPR 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 TPS92633MPWPR reliable?
The price and inventory of TPS92633MPWPR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS92633MPWPR is usually 5 days.
3.What payment methods are accepted for TPS92633MPWPR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS92633MPWPR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS92633MPWPR?
TPS92633MPWPR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS92633MPWPR 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 TPS92633MPWPR?
For technical support, including TPS92633MPWPR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS92633MPWPR requirements.
6.How does Aetrix verify that TPS92633MPWPR is sourced from the original manufacturer or authorized distributors?
All TPS92633MPWPR 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 TPS92633MPWPR meets industry standards.
7.What is the process for return or replacement of TPS92633MPWPR?
All TPS92633MPWPR units undergo pre-shipment inspection (PSI). If there is an issue with TPS92633MPWPR, 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 TPS92633MPWPR part is unused and in its original packaging.
Return procedure for TPS92633MPWPR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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