My Inquiry
My Account
Texas Instruments TPS923653DYYR
- Part No.:
- TPS923653DYYR
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- SOT-23-14 Thin, SOT-23 Variant
- Datasheet:
-
TPS923653DYYR.pdf
- Description:
- 65-V, 2-A BOOST OR BUCK-BOOST LE
- Quantity:
- Payment:
- Shipping:
Inventory:2,956
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TPS923653DYYR 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). It delivers up to 2A LED output current in common-cathode configurations and enables high-accuracy dimming across analog, PWM, hybrid, and flexible modes - ideal for machine vision strobes and medical surgical lighting requiring sub-150ns pulse control.
For engineers reviewing the TPS923653DYYR datasheet, TPS923653DYYR pinout, TPS923653DYYR application, or TPS923653DYYR equivalent, this device offers confirmed spread spectrum EMI reduction, configurable thermal foldback via TEMP pin, 200mV current sense threshold, adaptive off-time current mode control, and SOT-23-THN (14-pin) package compatibility with single-layer PCB layout support.
Technical Context
The TPS923653DYYR 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-input dimming architecture uses EN/PWM and ADIM/HD pins to configure four distinct dimming modes without external microcontroller intervention.
It integrates full protection including LED open/short detection, CSP/CSN sense resistor fault monitoring, cycle-by-cycle current limiting, thermal shutdown at 165°C, and open-drain FAULT signaling. The device supports CC/CV operation for battery charging and TEC control, with VCC LDO output regulated at 5.15V (±0.15V) and 47mA current limit.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 63V - supports 12V/24V/48V industrial rails and automotive cold-crank transients. |
| Output Current Capability | Up to 2A continuous LED current - determined by external RSENSE and thermal design. |
| Current Sense Threshold | 200mV ±3mV - sets full-scale LED current with <1.5% error over temperature. |
| Switching Frequency Range | 100kHz to 2.2MHz - adjustable via resistor on FSET pin; spread spectrum enabled for EMI reduction. |
| PWM Minimum Pulse Width | 150ns - enables ultra-fast strobe timing for machine vision and camera flash applications. |
| Thermal Shutdown Threshold | 165°C with 15°C hysteresis - protects against sustained overload or poor heatsinking. |
| Operating Junction Temperature | –40°C to +125°C - qualified for industrial and outdoor lighting environments. |
Pinout & Package
SOT-23-THN (14-pin) package, 4.2mm × 3.3mm body size, with exposed thermal pad connected to PGND/AGND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PGND / AGND | Power and analog ground | Separate ground paths minimize noise coupling; thermal pad must be soldered for thermal performance. |
| VIN | Main power input | Accepts 4.5V–63V; powers internal LDO and switching FET; requires local 1μF ceramic decoupling. |
| VCC | Internal LDO output | 5.15V ±0.15V supply for control circuitry; capacitor value sets soft-start time. |
| EN/PWM | Enable or PWM dimming input | Active-high enable; accepts 150ns minimum PWM pulses for direct brightness control. |
| ADIM/HD | Analog dimming/hybrid dimming select | Pull low for hybrid dimming; PWM input for analog dimming; configures dimming mode at startup. |
| FAULT | Open-drain fault indicator | Pulled low on LED open/short, thermal fault, or current-limit violation; requires external pull-up. |
| TEMP | Thermal foldback configuration | Resistor-to-AGND sets foldback curve slope; direct AGND connection disables foldback. |
| FSET | Switching frequency set | Resistor-to-AGND selects 100kHz–2.2MHz; spread spectrum active in TPS923653DYYR. |
| COMP | Error amplifier output | Connects to external RC network for loop compensation; bandwidth tuned per application. |
| OVP | Overvoltage protection input | Resistive divider sets LED open-circuit detection threshold; prevents overvoltage damage. |
| CSP / CSN | Current sense differential inputs | 200mV threshold; measures LED current via external sense resistor; rejects common-mode noise. |
| SW | Switching node | Connects to inductor and Schottky diode; carries high di/dt; requires tight layout and ground plane. |
Key Features
| Feature | Design Value |
|---|---|
| Inductive Fast Dimming (IFD) | Enables sub-150ns LED turn-on/off transitions without external MOSFET drivers - critical for strobe synchronization. |
| Hybrid Dimming (2,000:1 @ 20kHz) | Combines analog control above 12.5% duty cycle and PWM below - achieves high linearity and deep dimming simultaneously. |
| Spread Spectrum Modulation | ±7% frequency dither at 2kHz reduces peak EMI emissions - lowers input filter component count and cost. |
| Configurable Thermal Foldback | Adjustable via TEMP pin resistor - allows trade-off between power derating and thermal reliability in constrained enclosures. |
| CC/CV Dual-Mode Operation | Supports constant-current LED drive and constant-voltage battery charging or TEC control from same IC - reduces BOM count. |
Applications
| Machine Vision Strobe | Medical Surgical Lighting |
|---|---|
Use Scenario: High-speed imaging of moving parts under pulsed illumination with precise timing alignment. IC Role / Device Role / Timing Role: LED driver with 150ns PWM minimum pulse width and IFD for nanosecond-level LED turn-on control. Use Value: Eliminates motion blur in automated inspection systems by synchronizing LED flash with camera shutter. |
Use Scenario: Adjustable-intensity illumination for minimally invasive surgery requiring flicker-free, color-stable light. IC Role / Device Role / Timing Role: Constant-current LED driver with hybrid dimming and thermal foldback for stable output during prolonged use. Use Value: Maintains consistent CCT and lumen output across 2,000:1 dimming range without visible steps or flicker. |
| Fire Alarm Strobe | LCD Backlighting |
Use Scenario: High-intensity visual alert in emergency systems requiring certified flash patterns and reliability. IC Role / Device Role / Timing Role: Boost/buck-boost driver supporting wide input (12–48V DC) and programmable flash timing. Use Value: Meets UL 1971 strobe intensity requirements while enabling synchronized multi-unit flashing via FAULT pin feedback. |
Use Scenario: Energy-efficient backlight for industrial displays operating from 12V or 24V bus supplies. IC Role / Device Role / Timing Role: CC/CV-capable driver delivering constant current to LED strings and CV mode for auxiliary circuits. Use Value: Reduces system-level power conversion stages by integrating backlight drive and auxiliary rail generation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS923652DYYR | No spread spectrum; identical pinout, package, and 3A current limit. | Better brightness stability at low dimming levels; higher EMI without spread spectrum. | Select when EMI filtering budget is available and ultra-low flicker at 0.1% brightness is prioritized. |
| TPS923655DRRR | WSON-12 package; 6.5A current limit; spread spectrum enabled; different thermal resistance (RθJA = 47.4°C/W). | Higher output current capability; smaller footprint but lower power dissipation margin than SOT-23-THN. | Select when >2A LED current is required and board space is constrained, accepting revised thermal layout. |
Compared with TPS923653DYYR, TPS923652DYYR trades EMI reduction for improved low-brightness stability, while TPS923655DRRR increases current capacity at the expense of package compatibility and thermal performance - all three share identical dimming architecture and protection features.
Availability
TPS923653DYYR is available at Aetrix Electronics and suitable for machine vision strobes, medical surgical lighting, fire alarm systems, and LCD backlighting requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for TPS923653DYYR 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 and embedded processing technologies, with leadership in power management and LED driver innovation since 2005.
The TPS92365x product line was designed for high-performance, thermally robust LED driving in industrial, medical, and safety-critical illumination systems - emphasizing inductive fast dimming, multi-mode flexibility, and integrated protection.
FAQ
What dimming modes does the TPS923653DYYR support?
The TPS923653DYYR supports four dimming modes: PWM dimming (150ns minimum pulse width), analog dimming (256:1 ratio), hybrid dimming (2,000:1 at 20kHz), and flexible dimming (1,000,000:1 at 120Hz). Mode selection is configured at startup using logic states on the EN/PWM and ADIM/HD pins, with no firmware required. Each mode leverages the same adaptive off-time current mode control for consistent regulation accuracy.
Does the TPS923653DYYR include spread spectrum modulation?
Yes, the TPS923653DYYR has spread spectrum modulation enabled by default - ±7% frequency dither at 2kHz - to reduce EMI peak emissions and simplify input filter design. This feature distinguishes it from the TPS923652DYYR variant, which disables spread spectrum for enhanced brightness stability in low-dimming scenarios.
What is the current limit and MOSFET RDS(on) of the TPS923653DYYR?
The TPS923653DYYR has a typical cycle-by-cycle current limit of 3A and an integrated low-side NMOS FET with RDS(on) of 150mΩ (typical) at VIN ≥ 5V. These values are confirmed in the device comparison table and electrical characteristics section of the official datasheet, and define maximum safe operating current and conduction loss under steady-state conditions.
How is thermal protection implemented in the TPS923653DYYR?
The TPS923653DYYR implements two-tier thermal protection: configurable thermal foldback (via resistor on TEMP pin) and hard thermal shutdown at 165°C (with 15°C hysteresis). Foldback allows gradual current reduction before shutdown, preserving functionality under transient overload. Both features are active and verified across –40°C to +125°C junction temperature range.
What package type and pin count does the TPS923653DYYR use?
The TPS923653DYYR uses the SOT-23-THN package with 14 pins and a 4.2mm × 3.3mm body size. It shares pin compatibility with other TPS92365x variants in this package, including identical pin functions and thermal pad grounding to PGND/AGND - confirmed in Figure 5-3 and Table 5-1 of the datasheet.
TPS923653DYYR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SOT-23-14 Thin, SOT-23 Variant
- 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:
- 14-SOT-23-THIN
TPS923653DYYR FAQ
1.How can I place an order for TPS923653DYYR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS923653DYYR 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 TPS923653DYYR reliable?
The price and inventory of TPS923653DYYR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS923653DYYR is usually 5 days.
3.What payment methods are accepted for TPS923653DYYR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS923653DYYR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS923653DYYR?
TPS923653DYYR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS923653DYYR 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 TPS923653DYYR?
For technical support, including TPS923653DYYR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS923653DYYR requirements.
6.How does Aetrix verify that TPS923653DYYR is sourced from the original manufacturer or authorized distributors?
All TPS923653DYYR 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 TPS923653DYYR meets industry standards.
7.What is the process for return or replacement of TPS923653DYYR?
All TPS923653DYYR units undergo pre-shipment inspection (PSI). If there is an issue with TPS923653DYYR, 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 TPS923653DYYR part is unused and in its original packaging.
Return procedure for TPS923653DYYR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPS923653DYYR 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…
