My Inquiry
My Account
Texas Instruments TPS923652DMTR
- Part No.:
- TPS923652DMTR
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 14-VDFN Exposed Pad
- Datasheet:
-
TPS923652DMTR.pdf
- Description:
- 65-V, 2-A BOOST OR BUCK-BOOST LE
- Quantity:
- Payment:
- Shipping:
Inventory:2,685
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TPS923652DMTR from Texas Instruments is a 2A non-synchronous boost/buck-boost LED driver with 4.5V–65V input range, integrated 150mΩ low-side NMOS switch, and inductive fast dimming (IFD) support. It delivers constant-current LED drive or constant-voltage output for battery charging/TEC control, targeting high-precision illumination systems requiring sub-150ns PWM pulse handling and thermal foldback control.
For engineers reviewing the TPS923652DMTR datasheet, TPS923652DMTR pinout, TPS923652DMTR application, or TPS923652DMTR equivalent, this device is selected for machine vision strobes, medical surgical lighting, and LCD backlighting where hybrid dimming linearity (2,000:1 at 20kHz), cycle-by-cycle current limiting, and VSON-14 package thermal performance (RθJA = 39.1°C/W) are critical design requirements.
Technical Context
The TPS923652DMTR implements adaptive off-time current mode control with configurable switching frequency (100kHz–2.2MHz via FSET resistor) and no spread spectrum-enabling stable EMI behavior for brightness-critical applications. Its dual ground architecture (PGND/AGND) isolates power and analog paths, while the CSP/CSN differential current sense interface supports accurate LED current regulation down to 1.17% of full scale.
Dimming mode selection is determined at startup by logic states on EN/PWM and ADIM/HD pins: hybrid dimming (EN/PWM = PWM, ADIM/HD = low) enables 2,000:1 dimming ratio at 20kHz, while analog dimming (EN/PWM = high, ADIM/HD = PWM) provides 256:1 resolution with 8-bit duty-cycle mapping to VREF (20mV–180mV). Fault detection includes open/short LED, sense resistor failure, and thermal shutdown at 165°C with 15°C hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 63V - supports wide-range industrial and automotive LED systems without external pre-regulation. |
| Output Current Capability | 2A typical - set by external RSENSE with 200mV reference; full-scale current accuracy ±3% over temperature. |
| Switching FET RDS(on) | 150mΩ typical - enables high-efficiency operation up to 65V input with minimal conduction loss. |
| PWM Minimum Pulse Width | 150ns - allows ultra-fast LED turn-on/off for machine vision flash timing and strobe synchronization. |
| Cycle-by-Cycle Current Limit | 3A typical - protects MOSFET and inductor during transient overloads without latch-off. |
| Junction Temperature Range | –40°C to +125°C - validated for continuous operation in enclosed luminaires and industrial enclosures. |
| Thermal Foldback Threshold | 130°C (RTEMP = 20kΩ) - programmable thermal derating prevents thermal runaway under sustained high-power load. |
Pinout & Package
VSON-14 package (4.5mm × 3.0mm, 0.5mm pitch) with exposed thermal pad for enhanced PCB heat dissipation; RθJA = 39.1°C/W enables 2A operation without forced air in compact layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SW | Switching node | Connects to inductor and Schottky diode; carries high di/dt current; requires tight layout and Kelvin sensing. |
| CSP / CSN | Differential current sense inputs | Measure LED current via external sense resistor; reject common-mode noise for stable CC regulation. |
| EN/PWM | Enable or PWM dimming input | High = always-on; low = disable; PWM signal = direct PWM dimming with 150ns minimum pulse width. |
| ADIM/HD | Analog/hybrid dimming control | Low = hybrid dimming mode; high = PWM-only; PWM signal = analog dimming (8-bit resolution). |
| FSET | Frequency set input | Resistor-to-AGND sets switching frequency from 100kHz to 2.2MHz; determines EMI profile and inductor size. |
| TEMP | Thermal foldback configuration | Resistor-to-AGND selects foldback curve slope; open = disable; 20kΩ = 130°C activation threshold. |
| FAULT | Open-drain fault indicator | Pulled low on LED open/short, thermal shutdown, or current limit fault; requires external pull-up for system monitoring. |
| PGND / AGND | Power and analog ground | Separate ground pins minimize noise coupling between switching and feedback paths; connect to thermal pad. |
Key Features
| Feature | Design Value |
|---|---|
| Inductive Fast Dimming (IFD) | Enables hybrid dimming with 2,000:1 ratio at 20kHz by combining analog control (12.5–100%) and PWM (0–12.5%), eliminating flicker and enabling precise machine vision exposure. |
| Configurable Thermal Foldback | Programmable via TEMP pin resistor to reduce LED current before thermal shutdown, preserving light output continuity in thermally constrained fixtures. |
| CC/CV Dual-Mode Operation | Supports constant-current LED drive and constant-voltage battery charging/TEC control using same IC-reducing BOM count in multi-function power stages. |
| Integrated Low-Side NMOS | 150mΩ RDS(on) MOSFET eliminates external switch, reduces board area, and improves efficiency in boost/buck-boost topologies up to 65V. |
| Full System Protection Suite | Includes LED open/short, sense resistor failure, cycle-by-cycle current limit, and thermal shutdown with fault pin assertion-no external supervision required. |
Applications
| Machine Vision Strobe | Medical Surgical Lighting |
|---|---|
Use Scenario: High-speed camera illumination synchronized to exposure timing with microsecond-level on/off control. IC Role / Device Role / Timing Role: LED driver with inductive fast dimming (IFD) delivering 150ns minimum PWM pulses and hybrid dimming for 2,000:1 brightness range at 20kHz. Use Value: Eliminates motion blur in automated inspection systems by matching LED on-time precisely to sensor integration window. |
Use Scenario: Adjustable-intensity surgical headlight requiring flicker-free, color-stable illumination across wide dimming range. IC Role / Device Role / Timing Role: Constant-current LED driver with analog dimming (256:1) and thermal foldback to maintain consistent CCT during prolonged use. Use Value: Enables smooth, silent dimming without audible coil whine or visible flicker-critical for surgeon focus and patient comfort. |
| LCD Backlighting | Battery Charging Source |
Use Scenario: Edge-lit display backlight requiring uniform brightness and dynamic contrast enhancement via local dimming zones. IC Role / Device Role / Timing Role: Boost converter operating in constant-voltage mode to supply regulated voltage to LED strings with fast transient response. Use Value: Supports high-efficiency, single-layer PCB design with common-cathode LED connection-reducing interconnect cost and improving reliability. |
Use Scenario: Portable medical device battery charger needing programmable CC/CV profiles and fault-safe termination. IC Role / Device Role / Timing Role: Dual-mode controller delivering constant-current charge until battery voltage reaches threshold, then switching to constant-voltage regulation. Use Value: Integrates charging control and LED drive in one IC-reducing component count and footprint in space-constrained handheld devices. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS923653DMTR | Same VSON-14 package and 3A current limit, but includes enabled spread spectrum (±7%, 2kHz modulation) for lower EMI. | Better suited for EMI-sensitive environments (e.g., portable diagnostics equipment); trades slight brightness stability for reduced conducted emissions. | Select when EMC compliance outweighs absolute dimming fidelity at lowest brightness levels. |
| TPS923654DMTR | Same VSON-14 package but 6.5A current limit and higher RDS(on) tolerance (5.8–7.6A ILIM); no spread spectrum. | Targets higher-power LED arrays (e.g., architectural floodlights); requires larger inductor and sense resistor for same current resolution. | Select when >2A output is needed and thermal management allows higher peak currents. |
Compared with TPS923652DMTR, TPS923653DMTR adds spread spectrum for EMI reduction at the cost of minor brightness ripple, while TPS923654DMTR doubles current capability but increases board-level power loss and thermal design complexity.
Availability
TPS923652DMTR is available at Aetrix Electronics and suitable for machine vision strobes, medical surgical lighting, and LCD backlighting requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for TPS923652DMTR 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 decades of expertise in high-reliability LED driver design.
The TPS92365x product line was engineered for high-dynamic-range LED illumination systems demanding precision dimming, robust protection, and flexible topology support (boost/buck-boost) in industrial, medical, and imaging applications.
FAQ
What dimming modes does the TPS923652DMTR support, and how are they configured?
The TPS923652DMTR supports four dimming modes: PWM, analog, hybrid, and flexible. Configuration occurs at startup based on logic states applied to EN/PWM and ADIM/HD pins. For example, hybrid dimming activates when EN/PWM receives a PWM signal and ADIM/HD is held low-enabling 2,000:1 dimming ratio at 20kHz. The TPS923652DMTR datasheet Table 7-2 defines all combinations, with mode selection finalized within 1ms after VIN exits UVLO.
Does the TPS923652DMTR include spread spectrum frequency modulation?
No, the TPS923652DMTR disables spread spectrum to prioritize brightness stability in low-light conditions. This distinguishes it from the TPS923653DMTR and TPS923655DMTR, which enable ±7% frequency dithering at 2kHz to reduce EMI peaks. The absence of spread spectrum in the TPS923652DMTR ensures consistent LED output without perceptible flicker during analog or hybrid dimming.
How is the LED current set and regulated in the TPS923652DMTR?
LED current is set by an external sense resistor between CSP and CSN pins, referenced to a fixed 200mV internal voltage (VREF). The TPS923652DMTR uses adaptive off-time current mode control: the error amplifier compares sensed voltage to VREF, adjusts COMP voltage, and regulates MOSFET on-time to maintain average current. Full-scale accuracy is ±3% over temperature, and dimming resolution reaches 8-bit (256:1) in analog mode.
What protection features are integrated into the TPS923652DMTR?
The TPS923652DMTR integrates LED open/short detection, switching FET open/short protection, external component failure monitoring (e.g., sense resistor open/short), cycle-by-cycle current limiting, thermal shutdown at 165°C, and configurable thermal foldback. All faults assert the open-drain FAULT pin within microseconds, enabling immediate system response without external supervision circuitry.
What is the recommended PCB layout practice for the TPS923652DMTR's thermal pad?
The TPS923652DMTR's VSON-14 package includes an exposed thermal pad that must be soldered to a large copper pour connected to PGND. TI recommends a 4×4 array of 0.3mm vias (minimum) beneath the pad, each filled or capped, to transfer heat to inner or bottom layers. This achieves the specified RθJA of 39.1°C/W and sustains 2A continuous operation without exceeding 125°C junction temperature in still-air conditions.
TPS923652DMTR 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):
- 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)
TPS923652DMTR FAQ
1.How can I place an order for TPS923652DMTR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS923652DMTR 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 TPS923652DMTR reliable?
The price and inventory of TPS923652DMTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS923652DMTR is usually 5 days.
3.What payment methods are accepted for TPS923652DMTR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS923652DMTR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS923652DMTR?
TPS923652DMTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS923652DMTR 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 TPS923652DMTR?
For technical support, including TPS923652DMTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS923652DMTR requirements.
6.How does Aetrix verify that TPS923652DMTR is sourced from the original manufacturer or authorized distributors?
All TPS923652DMTR 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 TPS923652DMTR meets industry standards.
7.What is the process for return or replacement of TPS923652DMTR?
All TPS923652DMTR units undergo pre-shipment inspection (PSI). If there is an issue with TPS923652DMTR, 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 TPS923652DMTR part is unused and in its original packaging.
Return procedure for TPS923652DMTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPS923652DMTR 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…
