My Inquiry
My Account
Texas Instruments TPS923654MDMTR
- Part No.:
- TPS923654MDMTR
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 14-VDFN Exposed Pad
- Datasheet:
-
TPS923654MDMTR.pdf
- Description:
- 65-V, 4-A BOOST OR BUCK-BOOST LE
- Quantity:
- Payment:
- Shipping:
Inventory:2,980
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TPS923654MDMTR from Texas Instruments is a 65V, 4A non-synchronous boost/buck-boost LED driver with integrated 150mΩ low-side NMOS FET, 6.5A cycle-by-cycle current limit, and inductive fast dimming (IFD) support. It operates from 4.5V–63V input, delivers up to 2A/4A LED output, and enables ultra-fast PWM dimming with 150ns minimum pulse width - used in high-speed machine vision lighting and medical surgical illumination.
For engineers reviewing the TPS923654MDMTR datasheet, TPS923654MDMTR pinout, TPS923654MDMTR application, or TPS923654MDMTR equivalent, key selection criteria include its –55°C to 125°C operating junction temperature range, VSON-14 package with 4.5mm × 3.0mm footprint, configurable 100kHz–2.2MHz switching frequency, and hybrid dimming capability achieving 2,000:1 contrast at 20kHz PWM.
Technical Context
The TPS923654MDMTR implements adaptive off-time current mode control with smart sampling for precise inductive fast dimming (IFD), enabling sub-microsecond LED current settling. Its dual-input dimming logic (EN/PWM and ADIM/HD pins) configures four distinct dimming modes - PWM, analog, hybrid, and flexible - without external microcontroller intervention.
It integrates constant-current (CC) and constant-voltage (CV) regulation, supports common-cathode LED topology, and features full protection including LED open/short, sense resistor fault detection, thermal foldback with configurable curve via TEMP pin, and open-drain FAULT signaling. Spread spectrum is disabled per device variant specification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 63V - supports wide-range industrial and automotive power rails without pre-regulation. |
| Max Output Current | 4A - enables high-brightness multi-string LED arrays in projector and laser TV backlighting. |
| FET RDS(on) | 150mΩ - reduces conduction loss and thermal stress in high-current boost configurations. |
| Current Limit | 6.5A typical - provides robust overcurrent protection during transient load or short-circuit events. |
| Dimming Pulse Width | 150ns minimum - ensures reliable LED on/off control for strobe and machine vision flash timing. |
| Junction Temp Range | –55°C to 125°C - qualified for extended-temperature industrial and outdoor lighting environments. |
| Switching Frequency | 100kHz to 2.2MHz - allows EMI-optimized layout with small magnetics and ceramic capacitors. |
Pinout & Package
VSON-14 package (4.5mm × 3.0mm, 0.45mm height), thermally enhanced with exposed thermal pad connected to PGND/AGND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PGND / AGND | Power & analog ground | Separate ground paths minimize noise coupling between power switching and feedback circuits. |
| VIN | Main input supply | Accepts 4.5V–63V; powers internal LDO and gate driver; requires local 10µF ceramic input capacitor. |
| VCC | Internal LDO output | 5.15V ±0.15V regulated supply for analog circuitry; decoupled with 1µF capacitor to AGND. |
| EN/PWM | Enable or PWM input | Pull-high for continuous operation; accepts 150ns PWM pulses for direct LED brightness control. |
| ADIM/HD | Analog/hybrid dimming select | Pull-low enables hybrid dimming; PWM input enables analog dimming; determines dimming architecture at startup. |
| FAULT | Open-drain fault indicator | Asserts low on LED open/short, thermal shutdown, or FET fault; requires external pull-up for system monitoring. |
| TEMP | Thermal foldback control | Resistor-to-AGND sets foldback threshold curve; disables thermal shutdown hysteresis when grounded. |
| FSET | Frequency set input | Resistor-to-AGND selects switching frequency from 100kHz–2.2MHz; enables EMI optimization. |
| COMP | Error amplifier output | Connects to RC compensation network; bandwidth and phase margin tuned via external capacitor. |
| CSP / CSN | Current sense inputs | Differential pair measuring voltage across external sense resistor; 200mV threshold sets full-scale LED current. |
| SW | Switching node | Drives external inductor and Schottky diode; requires tight layout and Kelvin connection to minimize ringing. |
| OVP | Overvoltage protection | Resistor divider sets LED open-circuit detection threshold; prevents overvoltage damage to LEDs. |
Key Features
| Feature | Design Value |
|---|---|
| Inductive Fast Dimming (IFD) | Enables <1µs LED current settling via adaptive off-time control and accurate current sampling - critical for machine vision synchronization. |
| Hybrid Dimming Architecture | Combines analog dimming (12.5–100% brightness) with PWM dimming (0–12.5%) to achieve 2,000:1 contrast at 20kHz without flicker or color shift. |
| Configurable Thermal Foldback | Adjustable foldback curve via TEMP pin resistor - maintains safe operation under sustained high ambient temperatures without abrupt shutdown. |
| Integrated Low-Side NMOS | 150mΩ RDS(on), 6.5A current limit - eliminates external MOSFET, reduces BOM count, and enables compact single-layer PCB designs. |
| CC/CV Dual-Mode Regulation | Supports both constant-current LED driving and constant-voltage battery charging or TEC control - one IC for multiple power conversion tasks. |
Applications
| Machine Vision Lighting | Medical Surgical Illumination |
|---|---|
Use Scenario: High-speed synchronized strobe lighting for industrial camera inspection systems requiring µs-level timing precision. IC Role / Device Role / Timing Role: LED driver with 150ns PWM input capability and IFD for sub-microsecond LED current rise/fall control. Use Value: Eliminates motion blur in 10k+ fps imaging by enabling precise, jitter-free flash triggering aligned to camera exposure windows. | Use Scenario: Adjustable-intensity surgical headlight with flicker-free dimming across 6-decade brightness range. IC Role / Device Role / Timing Role: Constant-current LED driver supporting hybrid dimming (2,000:1 at 20kHz) and thermal foldback for stable output during prolonged use. Use Value: Maintains consistent color temperature and eliminates perceptible flicker during critical procedures, even at lowest illumination levels. |
| Laser TV Backlighting | Fire Alarm Strobe |
Use Scenario: High-efficiency, high-dynamic-range backlight for RGB laser projection systems requiring precise luminance control. IC Role / Device Role / Timing Role: Boost/buck-boost LED driver with CC/CV mode, 4A output, and flexible dimming supporting 1,000,000:1 contrast at 120Hz PWM. Use Value: Enables deep black levels and wide color gamut by delivering stable current to laser diodes across full dimming range without droop or overshoot. | Use Scenario: High-intensity emergency strobe compliant with UL 1971 and EN 54-23 standards requiring rapid, repeatable flash bursts. IC Role / Device Role / Timing Role: Instant-on LED driver with 150ns PWM response and fault-latched FAULT output for system-level safety monitoring. Use Value: Guarantees certified flash intensity and timing repeatability over temperature and lifetime, with built-in open/short LED protection. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS923654DMTR | Same VSON-14 package and 6.5A current limit, but rated for –40°C to 125°C junction temperature. | Suitable for commercial/industrial environments where extended low-temp operation is not required. | Select TPS923654DMTR if operating below –40°C is unnecessary and cost optimization is prioritized. |
| TPS923654DRRR | WSON-12 package (3.0mm × 3.0mm), same 6.5A current limit and –40°C to 125°C rating; no extended –55°C option. | Better thermal performance (RθJA = 47.4°C/W vs. 39.1°C/W) but smaller footprint; lacks extended temperature grade. | Choose TPS923654DRRR for space-constrained designs needing improved thermal resistance, accepting standard temp range. |
Compared with TPS923654DMTR and TPS923654DRRR, the TPS923654MDMTR uniquely supports –55°C operation while retaining the VSON-14 mechanical interface and 6.5A current capability - making it the only option for cold-environment outdoor lighting, aerospace avionics, or polar instrumentation.
Availability
TPS923654MDMTR is available at Aetrix Electronics and suitable for machine vision lighting, medical surgical illumination, and fire alarm strobe applications requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TPS923654MDMTR 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 90 years of innovation in high-reliability power conversion solutions.
The TPS92365x product line was designed for high-performance, thermally robust LED driving in demanding applications - including industrial machine vision, medical lighting, and safety-critical strobes - where precision dimming, wide input range, and extended temperature operation are essential.
FAQ
What is the operating junction temperature range of the TPS923654MDMTR?
The TPS923654MDMTR is specified for an operating junction temperature range of –55°C to 125°C. This extended low-temperature rating distinguishes it from standard variants like TPS923654DMTR (–40°C to 125°C) and enables deployment in outdoor, aerospace, and cold-storage lighting systems where ambient temperatures fall below –40°C. The device maintains full functionality and protection features across this entire range.
Does the TPS923654MDMTR support spread spectrum modulation?
No, the TPS923654MDMTR does not support spread spectrum modulation. Per the device comparison table and feature description, spread spectrum is explicitly disabled for all TPS923654 variants, including TPS923654MDMTR. This design choice prioritizes brightness stability and reduced low-frequency noise in dimming-sensitive applications such as medical and professional lighting, unlike TPS923653/TPS923655 which enable spread spectrum for EMI reduction.
What dimming methods does the TPS923654MDMTR support, and how are they configured?
The TPS923654MDMTR supports four dimming methods: PWM, analog, hybrid, and flexible dimming - selected at startup via logic states on EN/PWM and ADIM/HD pins. For example, hybrid dimming activates when ADIM/HD is pulled low and EN/PWM receives a PWM signal; analog dimming requires EN/PWM held high while ADIM/HD accepts a PWM input. Each method is implemented entirely in hardware with no firmware dependency, and hybrid dimming achieves 2,000:1 contrast at 20kHz PWM.
How is the LED current set in the TPS923654MDMTR?
The LED current in the TPS923654MDMTR is set by an external sense resistor connected between CSP and CSN pins. With a fixed internal reference voltage of 200mV, the full-scale LED current ILED_FS is calculated as RSENSE = 200mV / ILED_FS. For example, a 100mΩ resistor sets 2A full-scale current. The device uses adaptive off-time current mode control to maintain regulation accuracy across input voltage, temperature, and load variations - critical for consistent luminance in professional lighting.
What protection features are integrated into the TPS923654MDMTR?
The TPS923654MDMTR integrates comprehensive protection: LED open/short detection via OVP pin, switching FET open/short protection, external component failure detection (e.g., sense resistor open/short), cycle-by-cycle current limiting, thermal shutdown at 165°C, and configurable thermal foldback via the TEMP pin. All faults assert the open-drain FAULT pin, enabling system-level monitoring and safe shutdown - essential for reliability in medical, safety, and industrial lighting applications.
TPS923654MDMTR 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), Step-Up (Boost)
- Internal Switch(s):
- Yes
- Number of Outputs:
- 1
- Voltage - Supply (Min):
- 4.5V
- Voltage - Supply (Max):
- 65V
- Voltage - Output:
- 0V ~ 63V
- Current - Output / Channel:
- 4A
- Frequency:
- 100kHz ~ 2.2MHz
- Dimming:
- Analog, PWM
- Applications:
- Backlight, Lighting
- Operating Temperature:
- -55°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 14-VSON (4.5x3)
TPS923654MDMTR FAQ
1.How can I place an order for TPS923654MDMTR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS923654MDMTR 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 TPS923654MDMTR reliable?
The price and inventory of TPS923654MDMTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS923654MDMTR is usually 5 days.
3.What payment methods are accepted for TPS923654MDMTR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS923654MDMTR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS923654MDMTR?
TPS923654MDMTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS923654MDMTR 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 TPS923654MDMTR?
For technical support, including TPS923654MDMTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS923654MDMTR requirements.
6.How does Aetrix verify that TPS923654MDMTR is sourced from the original manufacturer or authorized distributors?
All TPS923654MDMTR 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 TPS923654MDMTR meets industry standards.
7.What is the process for return or replacement of TPS923654MDMTR?
All TPS923654MDMTR units undergo pre-shipment inspection (PSI). If there is an issue with TPS923654MDMTR, 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 TPS923654MDMTR part is unused and in its original packaging.
Return procedure for TPS923654MDMTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPS923654MDMTR Tags
-
BCR402RE6327HTSA1
Infineon Technologies
-
BCR430UXTSA2
Infineon Technologies
-
BCR420UE6433HTMA1
Infineon Technologies
-
BCR420UE6327HTSA1
Infineon Technologies
-
BCR421UE6327HTSA1
Infineon Technologies
-
LYT1604D-TL
Power Integrations
-
HV9910CLG-G
Microchip Technology
-
CL2N8-G
Microchip Technology
-
BCR420UW6-7
Diodes Incorporated
-
BCR421UW6-7
Diodes Incorporated
-
BCR420UFD-7
Diodes Incorporated
-
BCR421UFD-7
Diodes Incorporated
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
