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Texas Instruments TPS922053DYYR
- Part No.:
- TPS922053DYYR
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- SOT-23-14 Thin, SOT-23 Variant
- Datasheet:
-
TPS922053DYYR.pdf
- Description:
- 65-V, 2-A BUCK LED DRIVER WITH I
- Quantity:
- Payment:
- Shipping:
Inventory:2,677
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Product details
Overview
TPS922053DYYR from Texas Instruments is a 4.5V–65V input, 2A/4A non-synchronous buck LED driver with integrated 150mΩ low-side NMOS FET, supporting inductive fast dimming (IFD), hybrid/flexible dimming up to 1,000,000:1 at 120Hz PWM, and spread spectrum EMI reduction. It operates in constant-current (CC) or constant-voltage (CV) mode for LED lighting and battery charging applications.
For engineers reviewing the TPS922053DYYR datasheet, TPS922053DYYR pinout, TPS922053DYYR application, or TPS922053DYYR equivalent, this device delivers verified 150ns minimum PWM pulse width, 3A typical current limit, SOT-23-THN (14-pin) package with thermal pad, -40°C to +125°C junction operation, and configurable 100kHz–2.2MHz switching frequency - critical for machine vision strobes, medical lighting, and LCD backlighting designs.
Technical Context
The TPS922053DYYR implements adaptive off-time current-mode control with smart sampling to enable inductive fast dimming (IFD), achieving high dimming accuracy across analog, PWM, hybrid, and flexible modes. Its internal 200mV current-sense reference and cycle-by-cycle current limiting ensure stable LED current regulation under dynamic load and input conditions.
Spread spectrum modulation (±7% center frequency, 2kHz rate) is enabled on this variant for reduced EMI emissions, while thermal foldback is configurable via external resistor on TEMP pin and fault signaling is provided through open-drain FAULT output - all operating within a validated -40°C to +125°C junction range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 63V - supports wide-range industrial and automotive DC bus inputs without pre-regulation. |
| Output Current Capability | 2A/4A nominal with 3A typical cycle-by-cycle current limit - enables driving multi-string LEDs or charging batteries up to ~24W at 12V output. |
| Switching Frequency | 100kHz to 2.2MHz - adjustable via FSET pin resistor; lower frequencies improve efficiency, higher frequencies reduce inductor size. |
| Dimming Resolution | Up to 1,000,000:1 at 120Hz PWM - achieved via hybrid dimming combining analog control (12.5–100%) and PWM switching (0–12.5%). |
| Minimum PWM Pulse Width | 150ns - enables precise timing control for ultra-fast camera flash and machine vision illumination. |
| Thermal Protection | Configurable thermal foldback starting at 130°C and thermal shutdown at 165°C - ensures safe operation under sustained overload or poor heatsinking. |
| Package | SOT-23-THN (14-pin) with exposed thermal pad - 4.2mm × 3.3mm footprint optimized for compact, single-layer PCB layouts. |
Pinout & Package
SOT-23-THN (14-pin) package with exposed thermal pad (PGND/AGND); 4.2mm × 3.3mm body size, 0.65mm pitch; designed for high-power density and thermal performance in space-constrained LED drivers.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PGND / AGND | Power & Analog Ground | Separate ground pins for power return (PGND) and analog reference (AGND); both connected to thermal pad for optimal thermal and noise performance. |
| VIN | Main Input Supply | Accepts 4.5V–63V DC input; powers internal LDO and switching FET; requires local 10µF ceramic capacitor. |
| VCC | Internal LDO Output | 5.15V regulated supply for internal circuitry; requires 1µF capacitor to AGND; soft-start time depends on capacitor value. |
| EN/PWM | Enable / PWM Dimming Input | Digital input: high = enable, low = disable; accepts PWM signal for direct PWM dimming (150ns min pulse width). |
| ADIM/HD | Analog Dimming / Hybrid Mode Select | Configures dimming method: high = PWM only, low = hybrid, PWM signal = analog/flexible; threshold 0.4V/1.2V. |
| FAULT | Fault Indicator Output | Open-drain output pulled low during LED open/short, overtemperature, or FET fault; requires external pull-up. |
| TEMP | Thermal Foldback Control | Resistor-to-AGND sets foldback curve; direct connection to AGND disables foldback; enables graceful current derating before shutdown. |
| FSET | Frequency Set Input | Resistor-to-AGND selects switching frequency (e.g., 59kΩ = 400kHz); avoids floating to prevent erratic operation. |
| COMP | Error Amplifier Output | Connects to RC compensation network; bandwidth and stability tuned via external capacitor and resistor values. |
| CSP / CSN | Current Sense Inputs | Differential pair sensing voltage across external RSENSE; 200mV full-scale reference enables accurate CC regulation. |
| SW | Switching Node | Drives external inductor and catch diode; connects internally to 150mΩ NMOS FET; requires low-inductance layout. |
| UVP | LED Open Detection | Resistor divider sets LED open-circuit detection threshold; floating disables UVP protection. |
Key Features
| Feature | Design Value |
|---|---|
| Inductive Fast Dimming (IFD) | Enables sub-microsecond LED current transitions using adaptive off-time control and smart sampling - critical for strobe and machine vision timing precision. |
| Hybrid Dimming (2,000:1–1,000,000:1) | Combines analog dimming (12.5–100% brightness) with PWM dimming (0–12.5%) to achieve ultra-high contrast ratios without color shift or flicker. |
| Spread Spectrum Modulation | ±7% frequency dithering at 2kHz reduces peak EMI by >10dB at fundamental and harmonics - simplifies input filter design and EMC certification. |
| Configurable Thermal Foldback | External resistor on TEMP pin defines foldback slope (e.g., 20kΩ → 130°C start), enabling controlled current reduction before thermal shutdown. |
| Full Fault Protection Suite | Integrated detection of LED open/short, sense resistor failure, FET open/short, cycle-by-cycle overcurrent, and thermal events - all signaled via FAULT pin. |
Applications
| Machine Vision Illumination | Medical Surgical Lighting |
|---|---|
|
Use Scenario: High-speed synchronized strobing for industrial inspection cameras capturing moving parts at >10k fps. IC Role / Device Role / Timing Role: TPS922053DYYR acts as a precision current source with 150ns PWM edge response, enabling exact LED on/off timing aligned to camera shutter. Use Value: Eliminates motion blur and ensures consistent exposure across frames via deterministic IFD and hybrid dimming linearity. |
Use Scenario: Adjustable-intensity surgical headlamps requiring flicker-free, color-stable illumination across 0.1–100% brightness. IC Role / Device Role / Timing Role: TPS922053DYYR provides constant-current LED drive with hybrid dimming to maintain CCT stability while achieving >100,000:1 dimming range. Use Value: Enables smooth, silent, stepless dimming without audible coil whine or visible flicker - meeting IEC 62368-1 and IEC 60601-1 requirements. |
| LCD Backlighting | Battery Charging (CC/CV) |
|
Use Scenario: Edge-lit LCD displays in portable medical monitors and industrial HMIs requiring uniform brightness and low EMI. IC Role / Device Role / Timing Role: TPS922053DYYR serves as a programmable CC source with spread spectrum to suppress conducted EMI into sensitive analog front-ends. Use Value: Reduces input filter component count and board area while maintaining <±1% LED current matching across strings. |
Use Scenario: Single-chip CC/CV charging for Li-ion or lead-acid batteries in portable diagnostic equipment and emergency lighting. IC Role / Device Role / Timing Role: TPS922053DYYR regulates output voltage and current using same feedback path, switching seamlessly between CC and CV phases. Use Value: Replaces dual-controller solutions; supports programmable charge profiles via external resistors and thermal foldback for safe charging in confined enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS922053DMTR | VSON-14 package (4.5mm × 3.0mm); higher thermal performance (RθJA = 39.1°C/W vs. 96.0°C/W); same spread spectrum and 3A current limit. | Better suited for thermally constrained, high-power-density designs where PCB real estate allows larger VSON footprint. | Select TPS922053DMTR when thermal management is prioritized over board area; not drop-in due to different pinout and package. |
| TPS922055DRRR | WSON-12 package (3.0mm × 3.0mm); 6A current limit; spread spectrum enabled; identical functional features and pin compatibility within WSON family. | Required for higher-output-current applications (e.g., >3A LED strings or faster battery charging) with tighter board area than VSON but larger than SOT-23-THN. | Choose TPS922055DRRR only if 6A capability is needed; pinout differs from TPS922053DYYR - redesign required. |
Compared with TPS922053DYYR, TPS922053DMTR offers superior thermal dissipation in a larger VSON package, while TPS922055DRRR delivers double the current capacity in a smaller WSON footprint - neither is pin-compatible, but both share identical control architecture and dimming feature set.
Availability
TPS922053DYYR is available at Aetrix Electronics and suitable for machine vision strobes, medical lighting systems, and LCD backlighting applications requiring stable component supply, long-term manufacturability, and guaranteed traceability.
Supply support for TPS922053DYYR 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 ICs, with decades of expertise in high-reliability LED driver and power conversion solutions.
The TPS92205x product line was engineered specifically for high-dynamic-range LED lighting and dual-mode (CC/CV) power delivery in space- and thermal-constrained applications - emphasizing inductive fast dimming, EMI robustness, and comprehensive fault protection.
FAQ
What dimming methods does the TPS922053DYYR support?
The TPS922053DYYR supports four distinct dimming modes: analog dimming (256:1), fast PWM dimming (150ns minimum pulse width), hybrid dimming (2,000:1 at 20kHz, 10,000:1 at 4kHz, 1,000,000:1 at 120Hz), and flexible dimming. Mode selection is determined by logic states applied to EN/PWM and ADIM/HD pins at startup, as defined in Table 7-2 of the datasheet. Each method is fully implemented in silicon and validated across temperature and input voltage ranges.
Does the TPS922053DYYR include spread spectrum modulation?
Yes, the TPS922053DYYR has spread spectrum modulation enabled by default - a key differentiator from the TPS922052 variants. It applies ±7% frequency dithering at 2kHz to reduce peak EMI emissions at the fundamental switching frequency and its harmonics, easing compliance with CISPR 11/32 and FCC Part 15 standards without increasing input filter complexity.
What is the maximum output current capability of the TPS922053DYYR?
The TPS922053DYYR has a typical cycle-by-cycle current limit of 3A and is rated for continuous 2A/4A LED driving depending on thermal design and input/output conditions. Its integrated 150mΩ NMOS FET and adaptive off-time control enable stable operation up to 3A average output current with proper PCB layout and heatsinking - confirmed in Figure 6-1 and Table 6-5 of the datasheet.
How is thermal protection implemented in the TPS922053DYYR?
The TPS922053DYYR implements two-tier thermal protection: configurable thermal foldback (starting at 130°C with RTEMP = 20kΩ) and hard thermal shutdown at 165°C. The foldback behavior is set via an external resistor on the TEMP pin, allowing designers to define the current derating slope before shutdown - ensuring graceful degradation rather than abrupt failure under sustained overload.
What package type is used for the TPS922053DYYR?
The TPS922053DYYR uses the SOT-23-THN (14-pin) package with an exposed thermal pad, measuring 4.2mm × 3.3mm. This thermally enhanced variant supports high-power density designs on single-layer PCBs and provides dedicated PGND and AGND pins for improved noise immunity - distinct from the VSON-14 and WSON-12 packages used in other TPS92205x variants.
TPS922053DYYR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SOT-23-14 Thin, SOT-23 Variant
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- DC DC Regulator
- Topology:
- Step-Down (Buck)
- Internal Switch(s):
- Yes
- Number of Outputs:
- 1
- Voltage - Supply (Min):
- 4.5V
- Voltage - Supply (Max):
- 65V
- Voltage - Output:
- 0V ~ 63V
- Current - Output / Channel:
- 2A
- Frequency:
- 100kHz ~ 2.2MHz
- Dimming:
- Analog, PWM
- Applications:
- Backlight, Lighting
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOT-23-THIN
TPS922053DYYR FAQ
1.How can I place an order for TPS922053DYYR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS922053DYYR 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 TPS922053DYYR reliable?
The price and inventory of TPS922053DYYR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS922053DYYR is usually 5 days.
3.What payment methods are accepted for TPS922053DYYR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS922053DYYR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS922053DYYR?
TPS922053DYYR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS922053DYYR 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 TPS922053DYYR?
For technical support, including TPS922053DYYR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS922053DYYR requirements.
6.How does Aetrix verify that TPS922053DYYR is sourced from the original manufacturer or authorized distributors?
All TPS922053DYYR 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 TPS922053DYYR meets industry standards.
7.What is the process for return or replacement of TPS922053DYYR?
All TPS922053DYYR units undergo pre-shipment inspection (PSI). If there is an issue with TPS922053DYYR, 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 TPS922053DYYR part is unused and in its original packaging.
Return procedure for TPS922053DYYR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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