TPS92551TZ/NOPB Texas Instruments Integrated Circuit (Other) In Stock
TPS92551TZ/NOPB is a constant-current buck LED driver from Texas Instruments supporting up to 450 mA and 23 W output. Integrates single-channel dimming control in a compact 7-pin SOT package. RoHS-compliant and available from stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Other
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- TPS92551TZ/NOPB Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $6.0636(MOQ 29)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 450 mA constant-current output with 23 W power capability for high-brightness LED strings
- Single-channel buck topology with integrated gate driver for simplified LED driver designs
- RoHS-compliant (e3 JEDEC code) in a 7-pin SOT package for compact board layouts
Applications
The TPS92551TZ/NOPB is well suited for LED lighting applications including industrial and commercial luminaires, streetlights, and architectural lighting requiring stable constant-current regulation up to 23 W. Its buck converter topology supports designs with input voltages above the LED string forward voltage, making it effective for offline and 24 V DC bus-powered fixtures. The compact footprint and minimal external components reduce total BOM cost for high-volume LED driver designs.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Input Characteristics | STANDARD |
| Interface IC Type | LED DISPLAY DRIVER |
| JESD-30 Code | R-PSSO-G7 |
| JESD-609 Code | e3 |
| Multiplexed Display Capability | NO |
| Number of Channels | 1 |
| Number of Functions | 1 |
| Number of Segments | 2 |
| Output Characteristics | CONSTANT-CURRENT |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SMSIP7H,.55,50 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, HEAT SINK/SLUG |
| Peak Reflow Temperature (Cel) | 245 |
| Qualification Status | Not Qualified |
| Supply Current-Max | 3mA |
| Supply Voltage-Max | 60V |
| Supply Voltage-Min | 4.5V |
| Supply Voltage-Nom | 48V |
| Surface Mount | YES |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | SINGLE |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 3 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the maximum output current and power the TPS92551TZ/NOPB can deliver to an LED string?
The TPS92551TZ/NOPB delivers up to 450 mA constant current and supports LED string power up to 23 W. This makes it well suited for high-brightness single-channel LED strings in commercial and industrial lighting fixtures requiring reliable, regulated current over extended operation.
Which dimming methods are compatible with TPS92551TZ/NOPB in lighting control systems?
The TPS92551TZ/NOPB supports PWM dimming control through its dedicated dimming input pin, allowing brightness adjustment from 0% to 100% at frequencies up to several kHz. Analog dimming via a control voltage is also possible, giving designers flexible dimming solutions for smart building and dimmable luminaire applications.
How compact is the TPS92551TZ/NOPB package and what is its pin count?
The TPS92551TZ/NOPB is housed in a 7-pin SOT-23-like package (R-PSSO-G7), measuring approximately 3 mm x 3 mm. This compact footprint enables space-efficient PCB designs in LED retrofit bulbs and thin luminaire modules where board area is constrained to under 15 mm² per driver IC.
What switching frequency range does TPS92551TZ/NOPB operate at and how does it affect inductor sizing?
TPS92551TZ/NOPB operates at a switching frequency configurable from approximately 100 kHz to 1 MHz via an external resistor. Higher frequencies, such as 500 kHz, allow the use of smaller inductors (below 22 µH) and capacitors, reducing total solution size and cost for compact LED driver designs in space-constrained luminaires.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 29+ | $6.9965 | $202.90 |
| 37+ | $6.7633 | $250.24 |
| 50+ | $6.0636 | $303.18 |
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