TPS92510DGQR - 1.5A 60V Buck LED Driver | Texas Instruments
MPN: TPS92510DGQR ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.03 | $2.03 |
| 10 | $1.85 | $18.50 |
| 100 | $1.62 | $162.00 |
| 500 | $1.45 | $725.00 |
| 1,000 | $1.3 | $1,300.00 |
| 3,000 | $1.12 | $3,360.00 |
TPS92510DGQR Overview
An LED driver IC is a specialized power-management device that regulates current rather than voltage to a string of light-emitting diodes. LED drivers typically belong to the broader category of switching converters (DC-DC regulators), where buck (step-down) topology is preferred for high-brightness LEDs when the input bus voltage exceeds the forward-voltage stack. Inside the TPS92510 family, the part supports analog and PWM dimming via a dedicated PWMIN pin, plus an integrated LED thermal foldback function that automatically reduces current as the LED array temperature rises, protecting the load without external thermistor circuits.
Key features include ±3% LED current accuracy over the operating range, 100-kHz to 2.5-MHz adjustable switching frequency, dedicated PWM dimming input, and thermal-foldback input for direct NTC/PWM interface. Internal protections include cycle-by-cycle current limit, overtemperature shutdown, and undervoltage lockout. The exposed thermal pad (PowerPAD) keeps θJA low for a small-footprint MSOP package, simplifying single-layer PCB layouts.
The TPS92510 uses peak current-mode control with an internal 200-mV reference, allowing a small external sense resistor that keeps conduction loss below 5% in typical 350-mA to 700-mA strings. The integrated 200-mΩ high-side MOSFET handles up to 1.5 A of peak switch current and supports continuous conduction mode at high duty cycles. A high-side sense scheme rejects ground-borne noise that would otherwise degrade current accuracy in long LED cables.
Typical applications include architectural and commercial LED lighting, MR16/AR111 retrofit lamps, automotive interior/exterior lighting, signage and display backlighting, and emergency/portable lighting. The wide 60-V input tolerance also supports industrial 24-V/48-V nominal rails directly.
When designing with this device, choose the inductor so that the converter operates in continuous conduction at the minimum expected LED current, and route the thermal pad to a 1-square-inch copper pour to keep junction temperature well below the 150 °C thermal shutdown threshold.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for TPS92510DGQR — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with TPS92510DGQR (same form factor and footprint) — differing in Topology, Input Voltage Range, Package, Control Method, MSL Level.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
TPS92511DGQR
✅ Drop-In📋 Reference alternative (not in catalog)
TPS92512DGQR
✅ Drop-In📋 Reference alternative (not in catalog)
TPS92513DGQR
✅ Drop-In📋 Reference alternative (not in catalog)
TPS92515HVQDGQRQ1
✅ Drop-In✓ In Stock
$1.86 / Unit
View Datasheet →TPS92310DGSR/NOPB
✅ Drop-In📋 Reference alternative (not in catalog)
TPS92510DGQR Maximum Ratings & Electrical Characteristics
| Topology | Step-Down (Buck) |
| Input Voltage Range | 3.5 V to 60 V |
| Peak Switch Current | 1.5 A |
| Integrated MOSFET | 200 mΩ high-side N-channel |
| Internal Reference Voltage | 200 mV |
| LED Current Accuracy | ±3% |
| Switching Frequency Range | 100 kHz to 2.5 MHz |
| Control Method | Peak Current-Mode PWM |
| PWM Dimming Range | 100 Hz to 2.5 kHz (PWMIN pin) |
| Thermal Foldback | Integrated (TFB pin) |
| Dimming | Analog and PWM |
| Operating Temperature Range | -40 °C to +125 °C |
| Package | 10-pin HVSSOP (DGQ) with PowerPAD, 3.0 mm body |
| Mounting Type | Surface Mount |
| MSL Level | 2 (1 year) |
| RoHS Status | Compliant |
TPS92510DGQR Pin Configuration
| Pin 1 | BOOT — Bootstrap capacitor for high-side gate drive |
| Pin 2 | VIN — Input supply voltage (3.5 V to 60 V) |
| Pin 3 | EN — Enable input (active high) |
| Pin 4 | PWMIN — PWM dimming logic input |
| Pin 5 | TFB — Thermal foldback (NTC thermistor input) |
| Pin 6 | IADJ — Analog dimming / current adjust |
| Pin 7 | SENSE — Current sense (200 mV reference, sets LED current via RSENSE) |
| Pin 8 | RT — Timing resistor (sets switching frequency 100 kHz-2.5 MHz) |
| Pin 9 | SW — Switch node (connected to inductor and Schottky cathode) |
| Pin 10 | GND — Ground reference and PowerPAD thermal pad |
Typical Applications
TPS92510DGQR is suitable for 6 applications: Architectural and Commercial LED Lighting, MR16 and AR111 LED Retrofit Lamps, Automotive Interior and Exterior LED Lighting, Signage and Display LED Backlighting, Industrial 24-V and 48-V LED Lighting, Emergency and Portable LED Lighting.
Architectural and Commercial LED Lighting
The TPS92510DGQR drives high-brightness LED fixtures in 24-V and 48-V commercial lighting systems where the 3.5-V to 60-V input tolerance accepts the rectified bus directly. Its 1.5-A peak current and ±3% LED current accuracy deliver uniform lumen output across hundreds of fixtures in a building, while the 200-mV internal reference minimizes dissipation in the sense resistor (typically <0.5% of LED power). At 1 A of LED current and 36-V bus, conduction loss in the integrated 200-mΩ high-side MOSFET is only ~200 mW, allowing compact HVSSOP-10 layouts without external heat sinking. The dedicated PWMIN pin supports DALI or 0-10 V to PWM conversion for dimming down to <1% duty cycle without flicker.
Recommended
MR16 and AR111 LED Retrofit Lamps
The TPS92510DGQR is sized for the tight PCB constraints of MR16 retrofit lamps where the HVSSOP-10 (DGQ) footprint and integrated high-side MOSFET eliminate the need for an external switch FET. Its integrated thermal foldback (TFB) function uses a single NTC thermistor to throttle output current as the LED junction temperature rises, protecting lamp life without a discrete thermistor amplifier. The wide 60-V input handles the worst-case rectified 12-V AC transformer output after a bridge rectifier, with cycle-by-cycle current limit preventing inductor saturation during turn-on inrush.
Recommended
Automotive Interior and Exterior LED Lighting
For 12-V/24-V automotive LED lighting such as DRL, fog, and interior accent strips, the TPS92510DGQR operates from a 3.5-V to 60-V input that absorbs load-dump transients up to 40 V on the 12-V bus. The ±3% LED current accuracy maintains consistent brightness across wide temperature swings, and the peak current-mode topology rejects ground noise common in long automotive cable harnesses. For AEC-Q100-qualified designs, choose the TPS92515HVQDGQRQ1 as a drop-in upgrade in the same HVSSOP-10 (DGQ) footprint.
Recommended
Signage and Display LED Backlighting
The TPS92510DGQR drives edge-lit LED backlights for signage and small LCD panels where its 100-kHz to 2.5-MHz adjustable switching frequency allows inductor selection below 10 mm² for slim bezels. The PWMIN pin accepts video-frame-synchronized PWM for 1-D or 2-D local dimming, while the TFB pin compensates for LED array thermal derating over the display operating temperature range. Up to 1.5 A of peak switch current supports backlight strings up to ~24 high-brightness LEDs in series on a 24-V bus.
Recommended
Industrial 24-V and 48-V LED Lighting
The TPS92510DGQR is suited to industrial 24-V and 48-V LED luminaires on factory floors where its 3.5-V to 60-V input range covers both rails without reconfiguration. The integrated 200-mΩ high-side MOSFET delivers up to 1.5 A of switch current with thermal-foldback protection for enclosed IP-rated fixtures. Cycle-by-cycle current limit and overtemperature shutdown protect against output short circuits common in field-wired installations.
Recommended
Emergency and Portable LED Lighting
The TPS92510DGQR is ideal for battery-backed emergency lighting and portable LED work lights where its 3.5-V minimum input supports single-cell Li-ion operation down to cutoff, and its 1.5-A peak switch current drives high-power flashlights or area lights from a 4.2-V to 12-V battery pack. The PWMIN pin enables power-saving mode dimming at low battery, and the thermal-foldback function prevents LED damage during continuous high-power operation in enclosed housings.
Recommended
Recommended Products Summary
Engineering reference data for TPS92510DGQR — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | TPS92511DGQR | TPS92512DGQR | TPS92513DGQR | TPS92515HVQDGQRQ1 | TPS92310DGSR/NOPB |
|---|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | HVSSOP-10 (DGQ) with PowerPAD | HVSSOP-10 (DGQ) - same | HVSSOP-10 (DGQ) - same | HVSSOP-10 (DGQ) - same | HVSSOP-10 (DGQ) - same | HVSSOP-10 (DGQ) - same |
| Topology | Step-Down (Buck) | Step-Down (Buck) | Step-Down (Buck) | Step-Down (Buck) | Step-Down (Buck) HV | Secondary-side LED driver |
| Input Voltage Range | 3.5 V to 60 V | 3.5 V to 60 V | 3.5 V to 60 V | 3.5 V to 60 V | 4.5 V to 65 V | Up to 30 V |
| Peak Switch Current | 1.5 A | 2 A | 1.5 A | 1.5 A | 2 A | 1 A |
| Integrated MOSFET | — | Integrated high-side | Integrated high-side | Integrated high-side | Integrated high-side | External |
| LED Current Accuracy | ±3% | ±3% | ±3% | ±3% | ±3% | ±5% |
| PWM Dimming | Yes (PWMIN pin) | Yes | Yes | Yes | Yes | No |
| Thermal Foldback | Yes (integrated) | Yes | Yes | Yes | Yes | No |
| Automotive Grade (AEC-Q100) | No | No | No | No | Yes | No |
Key Differentiators
- Highest peak current in TPS9251x family at 60-V input (vs TPS92310DGSR/NOPB)
- 60-V wide input vs 30-V on legacy secondary-side driver (vs TPS92310DGSR/NOPB)
- Integrated 200-mΩ high-side MOSFET reduces BOM (vs TPS92310DGSR/NOPB)
- Drop-in upgrade path within HVSSOP-10 family (vs TPS92511DGQR / TPS92515HVQDGQRQ1)
Design Notes
The HVSSOP-10 (DGQ) PowerPAD package relies on the exposed pad for heat removal. Solder the PowerPAD to a copper pour of at least 0.5 square inches (320 mm²) on the top layer, plus thermal vias to the bottom layer. Estimated: at 1 A LED current, 36-V input, and 12-V LED string, the TPS92510DGQR dissipates approximately 0.5 W in the integrated high-side MOSFET plus 0.4 W in the sense resistor, requiring the PCB copper pour to keep junction temperature below the 150 °C thermal shutdown limit.
Place the input bypass capacitor (1 µF X7R minimum, 4.7 µF recommended), bootstrap capacitor (0.1 µF), and SENSE resistor as close to the IC pins as possible to minimize switching noise coupling. Use a wide ground plane under the IC and route the SW node trace away from SENSE and PWMIN to avoid false triggering of the current-sense comparator. Keep the BOOT capacitor return path short and direct to the SW node.
Do not exceed the absolute maximum VIN of 65 V (per datasheet), even during load-dump transients on 24-V automotive buses - add a TVS clamp if needed. The SENSE pin voltage must remain below 0.3 V during normal operation; if the sense resistor is too large, the current-limit comparator will trip prematurely. The PWMIN pin should not be left floating; tie it to VIN through a 100 kΩ resistor if PWM dimming is unused, otherwise the IC may not start.
Route the SW node trace on the top layer only, with minimum area to reduce EMI radiation. Place the Schottky diode cathode-to-SW and anode-to-GND traces as short as possible. Use a 4-layer PCB if available to provide a continuous ground plane under the SW node; on 2-layer boards, dedicate the bottom layer as a ground pour stitched with vias around the switch loop.
Compliance Information
RoHS compliant per TI product page. Not AEC-Q100 qualified - choose TPS92515HVQDGQRQ1 for automotive.
