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Texas Instruments TPS92510DGQ
- Part No.:
- TPS92510DGQ
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 10-PowerTFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
TPS92510DGQ.pdf
- Description:
- IC LED DRVR RGLTR PWM 10HVSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:289
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Product details
Overview
TPS92510DGQ from Texas Instruments is a 60-V, 1.5-A peak-current-mode buck LED driver IC with integrated 200-mΩ high-side MOSFET, ±3% LED current accuracy, and dedicated PWM dimming input. It delivers constant-current drive for high-brightness LED strings in street lighting and MR16 bulbs.
For engineers reviewing the TPS92510DGQ datasheet, TPS92510DGQ pinout, TPS92510DGQ application, or TPS92510DGQ equivalent, key selection considerations include its 100 kHz–2.5 MHz adjustable switching frequency, integrated thermal foldback via TSENSE, and MSOP-10 PowerPAD™ package with BOOT/PH bootstrap architecture.
Technical Context
The TPS92510DGQ implements fixed-frequency peak-current-mode control with internal slope compensation to prevent subharmonic oscillation across 0–100% duty cycle. Its transconductance error amplifier (310 µA/V) compares VSENSE against a 200-mV reference to regulate LED current with ±3% accuracy over temperature.
It features dual-mode RT/CLK pin operation: resistor-programmed frequency (100–2500 kHz) or PLL-synchronized external clock input (300–2200 kHz), with lock-in time ≤100 µs. Thermal foldback uses an NTC thermistor on TSENSE to linearly reduce average LED current above a set temperature threshold.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.5 V to 60 V - supports wide-input industrial and battery-backed LED systems including 48-V telecom and 12–24-V automotive auxiliary rails. |
| LED Current Accuracy | ±3% - ensures consistent luminous output across temperature and line/load variations without external calibration. |
| Switching Frequency | 100 kHz to 2.5 MHz - enables compact magnetics and EMI filtering optimization; programmable via RT resistor or external CLK sync. |
| Integrated MOSFET RDS(on) | 200 mΩ at 12 V VGS - reduces conduction loss and eliminates need for external high-side switch in ≤1.5-A designs. |
| Thermal Foldback | NTC-based analog feedback on TSENSE pin - dynamically lowers LED current to maintain safe junction temperature without microcontroller intervention. |
| PWM Dimming Input | Dedicated PDIM pin with 1-µA pull-up - supports linear brightness control down to 0% with fast recovery via COMP sample-and-hold. |
| UVLO Threshold | Adjustable via EN pin resistors; default 2.5 V rising - accommodates deep-discharge battery chemistries (LiFePO₄, lead-acid) with user-defined hysteresis. |
Pinout & Package
TPS92510DGQ is housed in a 10-pin MSOP PowerPAD™ package with exposed thermal pad (GND-connected). The PowerPAD must be soldered to a PCB copper pour for thermal performance and electrical grounding.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| BOOT | Bootstrap supply node | Drives high-side MOSFET gate; requires 0.1-µF X7R ceramic capacitor to PH; UVLO disables switch if voltage drops below 2.1 V. |
| COMP | Error amplifier output | Transconductance output (310 µA/V); connects to RC compensation network; clamped during PDIM off-time for fast recovery. |
| EN | Enable / UVLO control | Internal 0.9-µA pull-up; device enabled when >1.25 V; UVLO threshold adjustable with external resistor divider. |
| PDIM | PWM dimming input | Direct gate-driver enable/disable; 1-µA pull-up ensures default ON; supports 120–1000 Hz dimming with ≥10-µs minimum on-time. |
| RT/CLK | Frequency programming / sync input | Resistor-to-GND sets fSW; >2.2 V triggers PLL mode for external clock sync (300–2200 kHz); falling edge aligns PH rise. |
| TSENSE | Thermal foldback sense | Accepts NTC thermistor voltage divider; 70–125 µA current source; 0–250 mV valley and 1.75–2.15 V peak define foldback curve. |
| VIN | Main power input | 3.5–60 V supply; powers internal bias circuits and high-side driver; includes 65-V absolute max rating. |
| VSENSE | Current-sense feedback | Inverting input of gm amplifier; referenced to 200-mV internal VREF; determines LED current via external sense resistor. |
| PH | Power switch output | Drain of integrated high-side MOSFET; connects to inductor and BOOT capacitor; supports 100% duty cycle with proper BOOT refresh. |
| GND | Signal and power ground | Reference for all analog circuitry; exposed PowerPAD must be connected to PCB GND plane for thermal and EMI performance. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated high-side MOSFET | 200-mΩ RDS(on) at 12 V enables single-chip 1.5-A LED driver solutions without external switch or boot diode. |
| 200-mV precision reference | ±3% accuracy over –40°C to +125°C reduces sense resistor power loss and improves current regulation stability. |
| Dedicated PWM dimming path | Hardware-level PDIM control bypasses control loop for flicker-free dimming with <10-µs response and no duty-cycle distortion. |
| Thermal foldback protection | Analog NTC interface on TSENSE provides continuous, self-contained LED temperature derating without firmware or ADC. |
| PLL-based clock synchronization | RT/CLK pin locks to external system clocks (300–2200 kHz) to eliminate beat frequencies in multi-string LED arrays. |
Applications
| Street Lighting | MR16 LED Bulbs |
|---|---|
Use Scenario: Outdoor LED luminaires powered from 48-V DC or 120/277-V AC via offline PFC front-end. IC Role / Device Role: Constant-current buck controller regulating 1–3 series high-power white LEDs at up to 1.5 A. Use Value: Integrated thermal foldback prevents LED lumen depreciation and extends lifetime in unventilated pole-top enclosures. | Use Scenario: Retrofit MR16 halogen replacement operating from 12-V AC/DC low-voltage supply. IC Role / Device Role: High-efficiency step-down driver delivering regulated current to 1–4 series LEDs in tight thermal envelope. Use Value: 60-V input rating tolerates transformer surge; MSOP-10 PowerPAD enables compact layout with minimal heatsinking. |
| Emergency Lighting | Industrial Task Lighting |
Use Scenario: Battery-backed LED fixtures requiring reliable operation during grid outage with LiFePO₄ or sealed lead-acid batteries. IC Role / Device Role: Wide-input buck regulator maintaining constant LED current across 10–30-V battery discharge range. Use Value: Adjustable UVLO via EN pin ensures graceful shutdown before battery damage; 1.3-µA shutdown current maximizes runtime. | Use Scenario: Factory floor or warehouse task lights subject to voltage transients and ambient temperatures up to 85°C. IC Role / Device Role: Robust LED driver with overtemperature shutdown (150°C) and cycle-by-cycle overcurrent protection. Use Value: Integrated 200-mΩ MOSFET and PowerPAD thermal design sustain 1.5-A output continuously at TJ = 125°C. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar constant-current LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM3410XSDX/NOPB | 36-V max input, 1.25-A peak, no integrated thermal foldback, no RT/CLK sync, SOT-6 package | Lacks NTC-based thermal management and clock synchronization; suited for lower-power, cost-sensitive single-string designs | Select when input voltage ≤36 V and thermal foldback is handled externally or not required. |
| LT3761EFE#PBF | 60-V input, 5-A peak, external MOSFET, I²C programmable, no integrated TSENSE interface | Requires external high-side switch and microcontroller for thermal management; supports higher current and digital control | Select when >1.5-A output or digital configuration (e.g., fault reporting, soft-start tuning) is needed. |
Compared with LM3410XSDX/NOPB, TPS92510DGQ offers higher input voltage, integrated thermal foldback, and clock sync-critical for outdoor reliability. Versus LT3761EFE#PBF, it trades programmability and current headroom for lower BOM count and analog simplicity in fixed-output designs.
Availability
TPS92510DGQ is available at Aetrix Electronics and suitable for street lighting, emergency lighting, and MR16 LED bulb designs requiring stable component supply, long-term manufacturability, and automotive-grade thermal robustness.
Supply support for TPS92510DGQ 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.
The TPS92510DGQ belongs to TI's high-voltage LED driver product line, engineered specifically for thermally constrained, high-reliability constant-current lighting applications where integration, accuracy, and protection features reduce system complexity.
FAQ
What is the maximum continuous LED current supported by the TPS92510DGQ?
The TPS92510DGQ supports up to 1.5 A of continuous LED current, limited by its integrated 200-mΩ high-side MOSFET and thermal design. Peak current capability is 4.0 A, but sustained operation above 1.5 A requires careful thermal management via the PowerPAD and PCB layout per TI's SLUSAE4A datasheet guidelines. The TPS92510DGQ maintains ±3% current accuracy within this range.
How does the TPS92510DGQ implement thermal foldback without a microcontroller?
The TPS92510DGQ uses an analog NTC thermistor connected between the TSENSE pin and GND, biased by an internal 70–125 µA current source. As LED temperature rises, the NTC resistance drops, lowering the TSENSE voltage and reducing the COMP amplifier's effective reference-linearly decreasing average LED current. This fully autonomous behavior requires no firmware or external ADC, making the TPS92510DGQ ideal for standalone lighting modules.
Can the TPS92510DGQ synchronize to an external clock, and what are the timing requirements?
Yes, the TPS92510DGQ can synchronize to an external clock via its RT/CLK pin. The input must swing between <0.5 V (low) and >2.2 V (high), with minimum pulse widths of 40 ns each, and operate within 300–2200 kHz. The PH rising edge aligns to the RT/CLK falling edge. If the clock stops, the device automatically reverts to resistor-programmed mode using the RT-to-GND resistor. This feature is confirmed in the TPS92510DGQ datasheet Section 8.3.7.
What is the minimum controllable on-time of the TPS92510DGQ, and how does it affect high-input-voltage operation?
The TPS92510DGQ has a typical minimum on-time of 350 ns, specified in the Recommended Operating Conditions table. At high input voltages (e.g., 60 V) and low LED forward voltages (e.g., one 3-V LED), this limits the maximum duty cycle and may cause loss of regulation. To maintain control, reduce switching frequency or increase output voltage-design guidance is provided in Equation 3 of the TPS92510DGQ datasheet.
Does the TPS92510DGQ require an external bootstrap diode, and how is the BOOT capacitor charged?
No, the TPS92510DGQ integrates the bootstrap diode function internally. The BOOT capacitor (0.1-µF X7R ceramic) is charged through the internal diode when the high-side MOSFET is off and the PH node is pulled low by the freewheeling path. The TPS92510DGQ monitors BOOT–PH voltage and disables the MOSFET if it falls below 2.1 V, ensuring reliable gate drive even at high duty cycles.
TPS92510DGQ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 10-PowerTFSOP, 10-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Type:
- DC DC Regulator
- Topology:
- Step-Down (Buck)
- Internal Switch(s):
- Yes
- Number of Outputs:
- 1
- Voltage - Supply (Min):
- 3.5V
- Voltage - Supply (Max):
- 60V
- Voltage - Output:
- -
- Current - Output / Channel:
- 1.5A
- Frequency:
- 100kHz ~ 2.5MHz
- Dimming:
- PWM
- Applications:
- Lighting
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-HVSSOP
TPS92510DGQ FAQ
1.How can I place an order for TPS92510DGQ through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS92510DGQ 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 TPS92510DGQ reliable?
The price and inventory of TPS92510DGQ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS92510DGQ is usually 5 days.
3.What payment methods are accepted for TPS92510DGQ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS92510DGQ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS92510DGQ?
TPS92510DGQ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS92510DGQ 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 TPS92510DGQ?
For technical support, including TPS92510DGQ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS92510DGQ requirements.
6.How does Aetrix verify that TPS92510DGQ is sourced from the original manufacturer or authorized distributors?
All TPS92510DGQ 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 TPS92510DGQ meets industry standards.
7.What is the process for return or replacement of TPS92510DGQ?
All TPS92510DGQ units undergo pre-shipment inspection (PSI). If there is an issue with TPS92510DGQ, 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 TPS92510DGQ part is unused and in its original packaging.
Return procedure for TPS92510DGQ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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