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Texas Instruments TPS922053DRRR
- Part No.:
- TPS922053DRRR
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 12-WFDFN Exposed Pad
- Datasheet:
-
TPS922053DRRR.pdf
- Description:
- 65-V, 2-A BUCK LED DRIVER WITH I
- Quantity:
- Payment:
- Shipping:
Inventory:2,281
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Product details
Overview
TPS922053DRRR from Texas Instruments is a 4.5V–65V input, non-synchronous buck LED driver with integrated 150mΩ low-side NMOS FET, 3A cycle-by-cycle current limit, spread spectrum EMI reduction, and inductive fast dimming (IFD) supporting hybrid dimming up to 1,000,000:1 at 120Hz PWM - used in medical surgical lighting and machine vision strobes.
For engineers reviewing the TPS922053DRRR datasheet, TPS922053DRRR pinout, TPS922053DRRR application, or TPS922053DRRR equivalent, key selection considerations include its WSON-12 package thermal performance (RθJA = 47.4°C/W), 150ns minimum PWM pulse width support, configurable 100kHz–2.2MHz switching frequency via FSET resistor, and dual-mode dimming control via ADIM/HD and EN/PWM pins.
Technical Context
The TPS922053DRRR 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 error amplifier transconductance (205–325μA/V) and 200mV current sense threshold are tightly coupled to CSP/CSN feedback for stable CC regulation.
Spread spectrum (±7% modulation, 2kHz) is enabled on this variant for EMI suppression, distinguishing it from TPS922052/54. Thermal foldback is configurable via TEMP pin resistor, and fault detection triggers an open-drain FAULT output with <0.1V low-level voltage at 3mA sink.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 63V - supports wide-range industrial and automotive LED power supplies without external pre-regulation. |
| Output Current Limit | Typical 3A cycle-by-cycle - sets maximum safe inductor current and defines LED drive capability with integrated FET. |
| Switching Frequency | 100kHz to 2.2MHz via FSET resistor - enables layout optimization: lower frequencies improve efficiency; higher frequencies reduce inductor size. |
| Dimming Pulse Width | 150ns minimum - enables ultra-fast PWM dimming for machine vision flash and strobe synchronization. |
| Current Sense Threshold | 200mV ±3mV - determines LED current accuracy and resolution; sets RSENSE = 200mV / ILED. |
| Thermal Shutdown | 165°C with 15°C hysteresis - protects against sustained overload or poor heatsinking in enclosed luminaires. |
| EMI Reduction | Enabled spread spectrum (±7%, 2kHz) - lowers peak radiated emissions without requiring additional filtering components. |
Pinout & Package
TPS922053DRRR uses the WSON-12 (3.0mm × 3.0mm) thermally enhanced package with exposed thermal pad connected to PGND/AGND. Pin count is 12; no leaded or SOIC variants apply to this orderable part.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PGND/AGND (Thermal Pad) | Power & analog ground reference | Primary thermal path and low-noise return for switching and sensing circuits; must be soldered to PCB copper pour. |
| VIN | Main power input | Accepts 4.5–63V DC; powers internal LDO and switching FET; requires local 10µF ceramic input capacitor. |
| VCC | Internal LDO output | 5.15V ±0.15V regulated supply for internal logic; requires 1µF capacitor to AGND for soft-start timing. |
| EN/PWM | Enable or PWM dimming input | Active-high enable; accepts 150ns PWM pulses for direct LED on/off control; logic thresholds: 0.4V low / 1.2V high. |
| ADIM/HD | Analog/hybrid dimming mode select | Pull low for hybrid dimming; PWM input for analog dimming; high for PWM-only mode; defines dimming architecture at startup. |
| FAULT | Open-drain fault indicator | Sinks current when LED open/short, thermal shutdown, or FET fault occurs; requires external pull-up for system-level monitoring. |
| FSET | Frequency set input | Resistor-to-AGND sets switching frequency (e.g., 59kΩ = 400kHz); floating pin disables operation. |
| TEMP | Configurable thermal foldback | Resistor-to-AGND sets foldback curve onset (e.g., 20kΩ = 130°C); direct AGND connection disables foldback. |
| CSP / CSN | High-side current sense inputs | Differential pair measuring voltage across external RSENSE; 200mV threshold enables precise constant-current LED regulation. |
| SW | Switching node | Drives external inductor; connects internally to low-side NMOS FET; requires tight layout to minimize EMI and ringing. |
Key Features
| Feature | Design Value |
|---|---|
| Inductive Fast Dimming (IFD) | Enables hybrid dimming with 1,000,000:1 ratio at 120Hz - eliminates flicker and preserves color consistency in high-speed imaging. |
| Integrated 150mΩ NMOS FET | Eliminates external switch and gate driver; reduces BOM count and PCB area while maintaining >90% efficiency at 2A/24V. |
| Four Configurable Dimming Modes | Single-pin logic configuration (ADIM/HD + EN/PWM) selects PWM, analog, hybrid, or flexible dimming - no firmware or I²C required. |
| Full Fault Protection Suite | Detects LED open/short, sense resistor failure, thermal events, and cycle-by-cycle overcurrent - latches FAULT pin until reset. |
| Common-Anode LED Support | Enables single-layer PCB routing for multi-string arrays - reduces interconnect cost and improves reliability in architectural lighting. |
Applications
| Medical Surgical Lighting | Machine Vision Strobe |
|---|---|
|
Use Scenario: High-CRI, flicker-free illumination during precision surgical procedures under variable ambient light. IC Role / Device Role / Timing Role: Constant-current LED driver with hybrid dimming enabling smooth 0–100% brightness control and instant full-on response. Use Value: 1,000,000:1 dimming range at 120Hz ensures zero perceptible flicker; 150ns PWM pulse width synchronizes with camera exposure windows. |
Use Scenario: Ultra-short-duration, high-intensity flash for high-speed inspection of moving parts on production lines. IC Role / Device Role / Timing Role: Fast-switching buck controller delivering 3A peak current with sub-microsecond turn-on/turn-off timing. Use Value: Inductive fast dimming (IFD) achieves <1µs current rise/fall times; spread spectrum minimizes EMI interference with image sensors. |
| Outdoor Streetlighting | LCD Backlighting |
|
Use Scenario: Adaptive dimming in smart city infrastructure using DALI or 0–10V control signals interfaced via ADIM/HD. IC Role / Device Role / Timing Role: Wide-input buck regulator supporting 48VDC PoE or solar-battery hybrid inputs with thermal foldback for ambient temperature compensation. Use Value: Configurable thermal foldback (via TEMP pin) maintains consistent lumen output across –40°C to +85°C ambient without derating. |
Use Scenario: Constant-voltage backlight driving for large-format LCD panels in kiosks and digital signage. IC Role / Device Role / Timing Role: CC/CV dual-mode source regulating both LED string current and auxiliary bias rails. Use Value: CV charging mode enables direct integration with LCD panel VBIAS supplies; 200mV current sense threshold ensures <1% LED current drift over temperature. |
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); RθJA = 39.1°C/W - 17% lower junction-to-ambient thermal resistance than WSON-12. | Better thermal performance in space-constrained, high-power-density designs; requires different PCB footprint and stencil. | Select DMTR for higher ambient temperatures (>70°C) or continuous 3A operation without forced airflow. |
| TPS922055DRRR | Same WSON-12 package but 6A current limit and identical spread spectrum - higher FET RDS(on) not specified; typical ILIM = 6A. | Supports higher-power LED strings (e.g., 6A @ 24V) but draws more quiescent current (10mA at 2.2MHz vs. 4.6mA). | Select DRRR when scaling to >3A loads; verify inductor saturation and thermal margin with 6A peak current. |
Compared with TPS922053DRRR, TPS922053DMTR offers superior thermal dissipation in compact layouts, while TPS922055DRRR extends current capability at the cost of higher operating current and reduced efficiency at sub-3A loads.
Availability
TPS922053DRRR is available at Aetrix Electronics and suitable for medical lighting, machine vision strobes, outdoor streetlighting, and LCD backlighting requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TPS922053DRRR 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 company specializing in analog, embedded processing, and power management ICs, with leadership in high-reliability LED driver and power conversion solutions.
The TPS92205x product line was designed for high-efficiency, high-dimming-ratio LED systems requiring inductive fast dimming, wide input voltage tolerance, and integrated protection - targeting professional, medical, and industrial lighting.
FAQ
What dimming modes does the TPS922053DRRR support?
The TPS922053DRRR supports four hardware-configurable dimming modes: PWM dimming (150ns minimum pulse width), analog dimming (8-bit resolution), hybrid dimming (up to 1,000,000:1 at 120Hz), and flexible dimming. Mode selection is determined by logic states on the ADIM/HD and EN/PWM pins at startup - no software or communication interface is required. Each mode leverages the same adaptive off-time current mode control to maintain LED current accuracy across the full dimming range.
How is the switching frequency set on the TPS922053DRRR?
The switching frequency of the TPS922053DRRR is set by an external resistor (RFSET) connected between the FSET pin and AGND. Values from 9kΩ (2.2MHz) to 232kΩ (100kHz) configure discrete frequencies per TI's published table. The FSET pin must not be left floating - doing so disables operation. Frequency selection directly impacts efficiency, inductor size, and EMI profile; lower frequencies improve thermal performance, while higher frequencies allow smaller magnetics.
Does the TPS922053DRRR support constant-voltage (CV) operation?
Yes, the TPS922053DRRR supports CC/CV charging mode, enabling dual-role operation as both an LED current source and a regulated voltage supply. In CV mode, it regulates output voltage using the same feedback loop that governs current sensing - making it suitable for LCD bias rails, battery charging, and TEC control. The device automatically transitions between CC and CV based on load conditions, with seamless crossover and full protection retained in both modes.
What protection features are built into the TPS922053DRRR?
The TPS922053DRRR integrates comprehensive protection: LED open/short detection, CSP/CSN sense resistor open/short, cycle-by-cycle current limiting, thermal shutdown (165°C), configurable thermal foldback (via TEMP pin), and switching FET fault detection. All faults assert the open-drain FAULT pin, which remains latched low until the device is cycled or the fault condition clears. No external circuitry is needed to implement these protections - they are fully autonomous and hardware-based.
What is the significance of spread spectrum in the TPS922053DRRR?
Spread spectrum is enabled on the TPS922053DRRR (and TPS922055 variants) to reduce electromagnetic interference (EMI) by modulating the switching frequency ±7% around its center value at 2kHz. This spreads energy across a wider bandwidth, lowering peak emissions and easing compliance with CISPR-11/15 standards. It is particularly valuable in noise-sensitive environments like medical imaging or industrial automation - and is absent in TPS922052/54 for applications prioritizing absolute brightness stability.
TPS922053DRRR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 12-WFDFN Exposed Pad
- 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:
- 12-WSON (3x3)
TPS922053DRRR FAQ
1.How can I place an order for TPS922053DRRR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS922053DRRR 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 TPS922053DRRR reliable?
The price and inventory of TPS922053DRRR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS922053DRRR is usually 5 days.
3.What payment methods are accepted for TPS922053DRRR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS922053DRRR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS922053DRRR?
TPS922053DRRR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS922053DRRR 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 TPS922053DRRR?
For technical support, including TPS922053DRRR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS922053DRRR requirements.
6.How does Aetrix verify that TPS922053DRRR is sourced from the original manufacturer or authorized distributors?
All TPS922053DRRR 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 TPS922053DRRR meets industry standards.
7.What is the process for return or replacement of TPS922053DRRR?
All TPS922053DRRR units undergo pre-shipment inspection (PSI). If there is an issue with TPS922053DRRR, 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 TPS922053DRRR part is unused and in its original packaging.
Return procedure for TPS922053DRRR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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