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Texas Instruments TPS922052DMTR
- Part No.:
- TPS922052DMTR
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 14-VDFN Exposed Pad
- Datasheet:
-
TPS922052DMTR.pdf
- Description:
- 65-V, 2-A BUCK LED DRIVER WITH I
- Quantity:
- Payment:
- Shipping:
Inventory:2,738
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Product details
Overview
TPS922052DMTR from Texas Instruments is a 2A non-synchronous buck LED driver with integrated 150mΩ low-side NMOS FET, 4.5V–65V input range, and inductive fast dimming (IFD) support. It delivers constant-current LED drive or constant-voltage battery/TEC control in compact lighting and machine vision systems requiring high dimming accuracy and thermal robustness.
For engineers reviewing the TPS922052DMTR datasheet, TPS922052DMTR pinout, TPS922052DMTR application, or TPS922052DMTR equivalent, this page provides verified specifications, VSON-14 package details, hybrid/analog/PWM dimming implementation guidance, and validated alternative options for LED driver selection in professional illumination and instant-flash systems.
Technical Context
The TPS922052DMTR implements adaptive off-time current mode control with configurable switching frequency (100kHz–2.2MHz via FSET resistor), enabling stable regulation across wide input/output conditions while supporting inductive fast dimming without external MOSFETs. Its dual ground architecture (PGND/AGND) and common-anode topology simplify PCB layout and reduce component count.
It integrates full protection including cycle-by-cycle current limit, LED open/short detection, thermal foldback (configurable via TEMP pin), and fault reporting via open-drain FAULT pin. Spread spectrum is disabled-optimized for brightness stability in low-duty-cycle dimming versus EMI reduction.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 65V - supports wide-range industrial, automotive, and mains-derived supplies without pre-regulation. |
| Max Output Current | 2A continuous - set by internal 200mV current sense threshold and external RSENSE. |
| Current Limit | 3A typical - cycle-by-cycle limiting protects internal 150mΩ NMOS FET during transients or short circuits. |
| Dimming Pulse Width | 150ns minimum - enables ultra-fast PWM dimming for strobe and machine vision timing-critical applications. |
| Switching Frequency | 100kHz to 2.2MHz - adjustable via FSET resistor; higher frequencies allow smaller magnetics but increase switching loss. |
| Junction Temp Range | –40°C to +125°C - rated for operation in enclosed luminaires, outdoor enclosures, and industrial environments. |
| Thermal Resistance | RθJA = 39.1°C/W (VSON-14) - requires thermal pad soldering to PCB for reliable 2A operation at ambient >70°C. |
Pinout & Package
VSON-14 (4.5mm × 3.0mm) package with exposed thermal pad; requires soldering to PCB copper for thermal management and electrical grounding of PGND/AGND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PGND / AGND | Power & analog ground | Separate ground paths minimize noise coupling; thermal pad connects to both and must be soldered to PCB plane. |
| VIN | Main power input | Accepts 4.5–65V; powers internal LDO and switching FET; requires local 10µF ceramic input capacitor. |
| VCC | Internal LDO output | 5.15V ±0.15V regulated supply for internal circuitry; decoupled with 1µF capacitor to AGND. |
| EN/PWM | Enable or PWM input | Pull high for always-on; apply PWM signal for direct PWM dimming; minimum pulse width 150ns. |
| ADIM/HD | Analog/hybrid dimming control | Pull low for hybrid dimming; apply PWM for analog dimming; determines dimming method at startup. |
| FAULT | Open-drain fault indicator | Pulled low on LED open/short, thermal shutdown, or current limit fault; requires external pull-up. |
| TEMP | Thermal foldback configuration | Resistor-to-AGND sets foldback curve slope; direct connection disables foldback. |
| FSET | Frequency setting input | Resistor-to-AGND selects switching frequency (e.g., 59kΩ = 400kHz); floating not allowed. |
| COMP | Error amplifier output | Connect RC network to AGND to set loop bandwidth and stability; critical for transient response. |
| CSP / CSN | Current sense inputs | Differential pair measuring voltage across external RSENSE; 200mV full-scale threshold. |
| SW | Switching node | Connects to inductor and Schottky diode cathode; high dv/dt node requiring tight layout and guard ring. |
| UVP | LED open detection threshold | Resistor divider sets LED open voltage threshold; floating = zero-threshold detection. |
Key Features
| Feature | Design Value |
|---|---|
| Inductive Fast Dimming (IFD) | Enables sub-microsecond LED current transitions without external gate drivers-critical for machine vision strobes and medical flash. |
| Hybrid Dimming (2,000:1 @ 20kHz) | Combines analog control above 12.5% duty cycle and PWM below it-achieves high linearity and deep dimming simultaneously. |
| Configurable Thermal Foldback | Adjustable via TEMP pin resistor to trade off output current vs. junction temperature-prevents thermal runaway in sealed fixtures. |
| Common-Anode LED Topology | Allows single-layer PCB routing and eliminates need for LED string return traces-reduces BOM cost and layout complexity. |
| Integrated 150mΩ Low-Side FET | Eliminates external MOSFET and driver; supports up to 2A continuous with minimal footprint and thermal overhead. |
Applications
| Machine Vision Illumination | Medical Surgical Lighting |
|---|---|
Use Scenario: High-speed synchronized flash for industrial cameras capturing moving parts at >10k fps. IC Role / Device Role / Timing Role: Constant-current LED driver with 150ns PWM edge response and IFD for precise microsecond-level light pulse control. Use Value: Eliminates motion blur and enables accurate defect detection without external dimming controllers or gate drivers. |
Use Scenario: Adjustable-intensity surgical headlight requiring flicker-free, color-stable illumination across 0.1–100% brightness. IC Role / Device Role / Timing Role: Hybrid dimming controller delivering 10,000:1 dimming ratio at 4kHz PWM while maintaining CCT stability. Use Value: Enables surgeon-selectable brightness without visible stepping or audible coil whine-critical for long-duration procedures. |
| Outdoor Street Lighting | Battery Charging Source |
Use Scenario: Smart streetlamp with adaptive dimming based on ambient light and traffic sensors, operating from 48V DC grid. IC Role / Device Role / Timing Role: Buck LED driver with UVLO, thermal foldback, and fault reporting for unattended outdoor deployment. Use Value: Ensures reliable 2A LED drive over –40°C to +125°C ambient with automatic derating during summer heat buildup. |
Use Scenario: CC/CV source for Li-ion or lead-acid battery charging in portable equipment or backup systems. IC Role / Device Role / Timing Role: Dual-mode regulator using same CSP/CSN sensing and COMP compensation for both LED and battery loops. Use Value: Reduces BOM count by reusing one IC for illumination and power management-ideal for space-constrained portable designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS922053DMTR | Same VSON-14 package and 3A current limit, but spread spectrum enabled (±7%, 2kHz modulation). | Better EMI performance in noise-sensitive environments; slightly reduced dimming fidelity at lowest brightness levels. | Select when EMC compliance (e.g., CISPR-11 Class B) is prioritized over absolute dimming linearity. |
| LM3409QMHX/NOPB | Non-synchronous buck LED driver, 65V max input, 1.5A typical, no integrated FET-requires external MOSFET. | Lacks inductive fast dimming, hybrid dimming, and thermal foldback; simpler analog dimming only (100:1). | Select when cost sensitivity outweighs advanced dimming features and board space allows external FET + driver. |
Compared with TPS922052DMTR, TPS922053DMTR trades brightness stability for EMI reduction, while LM3409QMHX/NOPB offers lower system cost at the expense of dimming depth, thermal intelligence, and integration level-making TPS922052DMTR optimal for high-fidelity, thermally constrained, or compact LED systems.
Availability
TPS922052DMTR is available at Aetrix Electronics and suitable for machine vision illumination, medical surgical lighting, outdoor street lighting, and battery charging applications requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for TPS922052DMTR 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 over 50 years of innovation in high-reliability power conversion solutions.
The TPS92205x product line was designed specifically for high-performance LED lighting and multi-function CC/CV power sources where inductive fast dimming, thermal resilience, and compact integration are mandatory-targeting professional, medical, and industrial end equipment.
FAQ
What dimming modes does the TPS922052DMTR support?
The TPS922052DMTR supports four dimming modes: PWM dimming (150ns minimum pulse width), analog dimming (8-bit resolution, 256:1), hybrid dimming (2,000:1 at 20kHz, 10,000:1 at 4kHz), and flexible dimming. Mode selection is determined at startup by logic states on EN/PWM and ADIM/HD pins per Table 7-2 in the datasheet. The TPS922052DMTR implements all four without firmware or external controllers.
Does the TPS922052DMTR include an integrated MOSFET?
Yes, the TPS922052DMTR integrates a 150mΩ low-side NMOS FET rated for 3A typical current limit. This eliminates the need for an external switch and driver, reducing solution size and component count. The FET is optimized for inductive fast dimming and supports continuous 2A LED current with proper thermal design on the VSON-14 package's exposed pad.
What is the purpose of the TEMP pin on the TPS922052DMTR?
The TEMP pin on the TPS922052DMTR configures the thermal foldback behavior: connecting a resistor to AGND sets the foldback curve slope, allowing programmable current derating versus junction temperature. Leaving the pin floating disables thermal foldback entirely. This feature prevents thermal runaway in enclosed luminaires while maintaining maximum output until a defined temperature threshold is reached.
Can the TPS922052DMTR be used for battery charging?
Yes, the TPS922052DMTR supports constant-voltage (CV) mode in addition to constant-current (CC) mode, making it suitable for Li-ion, lead-acid, or supercapacitor charging. Its CC/CV transition is managed internally using the same CSP/CSN current sense and COMP compensation network-enabling dual-use in lighting + power applications without redesign.
How is switching frequency configured on the TPS922052DMTR?
Switching frequency on the TPS922052DMTR is set via an external resistor (RFSET) between the FSET pin and AGND. Values range from 9kΩ (2.2MHz) to 232kΩ (100kHz), with 11 standard points documented in Table 7-1. The pin must never be left floating; incorrect or missing RFSET causes undefined frequency operation and potential instability in the TPS922052DMTR control loop.
TPS922052DMTR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-VDFN 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):
- 63V
- 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, Wettable Flank
- Supplier Device Package:
- 14-VSON (4.5x3)
TPS922052DMTR FAQ
1.How can I place an order for TPS922052DMTR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS922052DMTR 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 TPS922052DMTR reliable?
The price and inventory of TPS922052DMTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS922052DMTR is usually 5 days.
3.What payment methods are accepted for TPS922052DMTR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS922052DMTR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS922052DMTR?
TPS922052DMTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS922052DMTR 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 TPS922052DMTR?
For technical support, including TPS922052DMTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS922052DMTR requirements.
6.How does Aetrix verify that TPS922052DMTR is sourced from the original manufacturer or authorized distributors?
All TPS922052DMTR 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 TPS922052DMTR meets industry standards.
7.What is the process for return or replacement of TPS922052DMTR?
All TPS922052DMTR units undergo pre-shipment inspection (PSI). If there is an issue with TPS922052DMTR, 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 TPS922052DMTR part is unused and in its original packaging.
Return procedure for TPS922052DMTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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