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Texas Instruments TPS923652DRRR
- Part No.:
- TPS923652DRRR
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 12-WFDFN Exposed Pad
- Datasheet:
-
TPS923652DRRR.pdf
- Description:
- 65-V, 2-A BOOST OR BUCK-BOOST LE
- Quantity:
- Payment:
- Shipping:
Inventory:2,625
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Product details
Overview
TPS923652DRRR from Texas Instruments is a 4.5V–65V input, non-synchronous boost/buck-boost LED driver with integrated 150mΩ low-side NMOS FET, 3A cycle-by-cycle current limit, and support for inductive fast dimming (IFD) in hybrid and flexible modes. It delivers precise constant-current LED control for high-brightness strobe and medical lighting applications requiring sub-150ns PWM pulse handling and 2,000:1 dimming ratio at 20kHz.
For engineers reviewing the TPS923652DRRR datasheet, TPS923652DRRR pinout, TPS923652DRRR application, or TPS923652DRRR equivalent, this page provides verified package mapping (WSON-12), confirmed dimming architecture (adaptive off-time current mode), thermal foldback configurability, fault signaling behavior, and validated alternative options for LED driver selection in industrial and imaging systems.
Technical Context
The TPS923652DRRR implements adaptive off-time current-mode control with external frequency programming via FSET pin (100kHz–2.2MHz), enabling stable regulation across wide input/output voltage ratios. Its dual-dimming-input architecture (EN/PWM and ADIM/HD) supports four distinct dimming modes-PWM, analog, hybrid, and flexible-each configured by static logic levels and dynamic signal edges at startup.
It integrates full protection including LED open/short detection, CSP/CSN sense resistor fault monitoring, thermal foldback with RTEMP-based curve shaping, and thermal shutdown at 165°C. The device uses separate PGND and AGND pins, requires external compensation on COMP, and outputs fault status via open-drain FAULT pin.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 63V - supports wide-range industrial DC supplies and battery-backed lighting systems without pre-regulation. |
| Output Current Capability | Up to 2A continuous LED current - determined by external RSENSE and internal 200mV current-sense reference. |
| Switching FET RDS(on) | 150mΩ typical - enables high-efficiency operation at 2A load with <150mW conduction loss at room temperature. |
| Current Limit | 3A cycle-by-cycle - protects against inductor saturation and short-circuit transients during boost/buck-boost transitions. |
| PWM Minimum Pulse Width | 150ns - ensures reliable LED turn-on/off control for machine vision flash and strobe timing critical to frame synchronization. |
| Thermal Shutdown Threshold | 165°C with 15°C hysteresis - prevents permanent damage while allowing recovery after transient overloads. |
| Operating Junction Temperature | –40°C to +125°C - qualified for outdoor lighting, automotive auxiliary lighting, and industrial embedded environments. |
Pinout & Package
TPS923652DRRR is housed in a 3.0mm × 3.0mm, 12-pin WSON package with exposed thermal pad (PGND/AGND). This thermally enhanced leadless package supports high-power density designs and requires controlled solder reflow per TI's SNOA971.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SW | Switching node | Connects internally to low-side NMOS drain; ties to inductor and Schottky diode anode in boost topology. |
| CSP / CSN | Current sense differential inputs | Measure LED current via external sense resistor; CSP is high-side, CSN is low-side (AGND-referenced). |
| VIN | Main power input | Accepts 4.5V–65V unregulated DC; powers internal LDO and switching FET gate drive. |
| VCC | Internal LDO output | 5.15V ±0.15V regulated supply; requires 1μF capacitor to AGND for soft-start timing and stability. |
| EN/PWM | Enable or PWM dimming input | Active-high enable; accepts 150ns minimum PWM pulses for direct brightness control in PWM/hybrid modes. |
| ADIM/HD | Analog dimming or hybrid mode select | Pull low for hybrid dimming; accept PWM signal for analog dimming; logic level sets dimming architecture at startup. |
| FAULT | Open-drain fault indicator | Pulls low on LED open/short, thermal fault, or current-limit violation; requires external pull-up for system-level alerting. |
| TEMP | Thermal foldback configuration | Resistor-to-AGND sets foldback curve slope; direct AGND connection disables foldback. |
| FSET | Switching frequency programming | Resistor-to-AGND selects 100kHz–2.2MHz; 59kΩ yields 400kHz for optimal efficiency/EMI trade-off. |
| COMP | Error amplifier output | Connects to RC network for loop compensation; bandwidth adjusted via external capacitor value. |
| OVP | Overvoltage protection input | Resistive divider sets LED open-circuit threshold; prevents overvoltage damage to LEDs and downstream circuitry. |
| PGND / AGND | Power and analog ground | Separate ground pins minimize noise coupling; both connect to thermal pad for thermal and electrical integrity. |
Key Features
| Feature | Design Value |
|---|---|
| Inductive Fast Dimming (IFD) | Enables 2,000:1 dimming ratio at 20kHz using hybrid mode - achieves flicker-free illumination without external MOSFETs or complex timing circuits. |
| Configurable Thermal Foldback | RTEMP-based curve shaping allows gradual current reduction before shutdown - preserves LED lifetime under sustained ambient heat or high-power operation. |
| Four Dimming Modes | Single-pin logic configuration (EN/PWM + ADIM/HD) eliminates firmware dependency - supports analog (8-bit), PWM (150ns), hybrid (2,000:1), and flexible (1M:1 at 120Hz) dimming without mode-switching delays. |
| Integrated Low-Side NMOS | 150mΩ RDS(on) FET reduces BOM count and PCB area - eliminates need for external switch in most boost/buck-boost LED topologies up to 2A. |
| Full Fault Protection Suite | Detects LED open/short, sense resistor failure, thermal events, and cycle-by-cycle overcurrent - FAULT pin asserts within microseconds for system-level safety response. |
Applications
| Machine Vision Illumination | Medical Surgical Lighting |
|---|---|
|
Use Scenario: High-intensity, precisely timed LED flash synchronized to camera exposure in automated inspection systems. IC Role / Device Role / Timing Role: Constant-current LED driver with 150ns PWM edge response and inductive fast dimming for sub-millisecond on/off control. Use Value: Eliminates motion blur and enables high-speed capture of moving parts without external dimming controllers or gate drivers. |
Use Scenario: Adjustable-intensity surgical headlight requiring flicker-free, color-stable illumination across 10,000:1 brightness range. IC Role / Device Role / Timing Role: Hybrid dimming controller delivering smooth 4kHz PWM + analog modulation to avoid perceptible flicker at low intensities. Use Value: Meets IEC 60601-2-57 photobiological safety requirements while maintaining CRI >90 across full dimming range. |
| Industrial Strobe Alarms | Professional Outdoor Lighting |
|
Use Scenario: Fire alarm strobes requiring certified flash intensity, repetition rate, and fail-safe fault reporting. IC Role / Device Role / Timing Role: Fault-aware LED driver with open-drain FAULT output tied to building management system for real-time diagnostics. Use Value: Integrates LED open/short, thermal, and overcurrent detection - satisfies UL 1971 and EN 54-23 compliance without external monitoring ICs. |
Use Scenario: Streetlight LED module operating from 12–60V DC solar/battery or PoE-powered infrastructure. IC Role / Device Role / Timing Role: Wide-input boost/buck-boost regulator supporting common-cathode LED strings with single-layer PCB layout. Use Value: Reduces bill-of-materials cost and board space vs. discrete buck-boost solutions while maintaining >92% efficiency at 40V input/36V output. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS923653DRRR | Same WSON-12 package and 3A current limit, but includes enabled spread spectrum (±7%, 2kHz modulation) for lower EMI. | Better suited for EMI-sensitive environments (e.g., medical imaging equipment) where radiated emissions must meet CISPR-11 Class B limits. | Select TPS923653DRRR when EMI filtering cost or board area is constrained; TPS923652DRRR preferred for brightness-critical strobe timing. |
| TPS923654DRRR | Same WSON-12 package but 6.5A current limit and higher RDS(on) tolerance (5.8–7.6A ILIM); no spread spectrum. | Supports higher-power LED arrays (e.g., 4A+ projector light engines) without external current boosting stages. | Choose TPS923654DRRR for >2.5A average LED loads; TPS923652DRRR remains optimal for 2A-class strobe and surgical lighting modules. |
Compared with TPS923652DRRR, TPS923653DRRR adds spread spectrum for EMI reduction but sacrifices minimal brightness stability at ultra-low duty cycles, while TPS923654DRRR doubles current capability at the cost of higher thermal dissipation and reduced dimming resolution below 10%.
Availability
TPS923652DRRR is available at Aetrix Electronics and suitable for machine vision illumination, medical surgical lighting, and industrial strobe alarms requiring stable component supply, long-term lifecycle support, and traceable sourcing for safety-critical deployments.
Supply support for TPS923652DRRR 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 and LED control solutions.
The TPS92365x product line was designed specifically for high-dynamic-range LED applications demanding precise current regulation, multi-mode dimming, and robust fault handling in compact form factors - targeting professional lighting, imaging, and industrial safety systems.
FAQ
What dimming modes does the TPS923652DRRR support, and how are they selected?
The TPS923652DRRR supports four dimming modes: PWM, analog, hybrid, and flexible. Selection occurs at startup based on logic states applied to EN/PWM and ADIM/HD pins. For example, EN/PWM = PWM signal + ADIM/HD = low configures hybrid dimming. All modes are hardware-configured - no firmware or register writes required. Each mode leverages the same adaptive off-time current-mode control engine inside the TPS923652DRRR to ensure consistent regulation accuracy.
Does the TPS923652DRRR include spread spectrum frequency modulation?
No, the TPS923652DRRR has spread spectrum disabled by default. This design choice prioritizes brightness stability and timing precision in low-duty-cycle applications such as strobe flash and surgical lighting. Spread spectrum is only enabled in the TPS923653 and TPS923655 variants. The TPS923652DRRR maintains fixed-frequency operation across its 100kHz–2.2MHz range set by the FSET resistor.
What is the maximum LED string voltage the TPS923652DRRR can drive in boost configuration?
The TPS923652DRRR supports output voltages up to 63V in boost mode, limited by its 65V absolute maximum SW pin rating and internal OVP circuitry. When used with a properly rated external Schottky diode and output capacitor, it reliably drives LED strings requiring up to 60V forward voltage - sufficient for 15–18 white LEDs in series at typical forward voltage (3.2–3.6V per LED). The OVP pin allows setting custom overvoltage thresholds via resistive divider.
How does thermal foldback work on the TPS923652DRRR, and can it be disabled?
Thermal foldback on the TPS923652DRRR is configured via the TEMP pin: connecting a resistor to AGND sets the foldback curve slope, while shorting TEMP directly to AGND disables foldback entirely. Once enabled, foldback begins reducing LED current at 130°C junction temperature (Tth) before reaching thermal shutdown at 165°C. This staged response preserves LED lifetime and system uptime - a key feature distinguishing the TPS923652DRRR from basic thermal shutdown-only drivers.
Is the TPS923652DRRR pin-compatible with other members of the TPS92365x family?
Yes, the TPS923652DRRR shares identical pinout and footprint with TPS923653DRRR, TPS923654DRRR, and TPS923655DRRR in the WSON-12 package. This allows direct substitution in existing layouts when upgrading current capability (e.g., TPS923652DRRR → TPS923654DRRR) or adding spread spectrum (TPS923652DRRR → TPS923653DRRR), provided thermal and EMI validation is repeated for the new variant. All share identical COMP, FAULT, OVP, and FSET interface behavior.
TPS923652DRRR 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), Step-Up (Boost)
- 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
- Supplier Device Package:
- 12-WSON (3x3)
TPS923652DRRR FAQ
1.How can I place an order for TPS923652DRRR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS923652DRRR 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 TPS923652DRRR reliable?
The price and inventory of TPS923652DRRR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS923652DRRR is usually 5 days.
3.What payment methods are accepted for TPS923652DRRR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS923652DRRR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS923652DRRR?
TPS923652DRRR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS923652DRRR 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 TPS923652DRRR?
For technical support, including TPS923652DRRR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS923652DRRR requirements.
6.How does Aetrix verify that TPS923652DRRR is sourced from the original manufacturer or authorized distributors?
All TPS923652DRRR 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 TPS923652DRRR meets industry standards.
7.What is the process for return or replacement of TPS923652DRRR?
All TPS923652DRRR units undergo pre-shipment inspection (PSI). If there is an issue with TPS923652DRRR, 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 TPS923652DRRR part is unused and in its original packaging.
Return procedure for TPS923652DRRR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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