My Inquiry
My Account
Texas Instruments TPS54140QDRCRQ1
- Part No.:
- TPS54140QDRCRQ1
- Manufacturer:
- Texas Instruments
- Package:
- 10-VFDFN Exposed Pad
- Datasheet:
-
TPS54140QDRCRQ1.pdf
- Description:
- IC REG BUCK ADJ 1.5A 10VSON
- Quantity:
- Payment:
- Shipping:
Inventory:1,137
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TPS54140QDRCRQ1 from Texas Instruments is an automotive-grade 42-V input, 1.5-A synchronous step-down DC/DC converter with integrated 200-mΩ high-side MOSFET, 0.8-V internal reference, Eco-mode™ pulse-skipping control, and adjustable 100-kHz–2.5-MHz switching frequency. It delivers regulated 3.3-V or 5-V output in 12-V/24-V automotive power systems with 116-μA quiescent current and open-drain PWRGD monitoring.
For engineers reviewing the TPS54140QDRCRQ1 datasheet, TPS54140QDRCRQ1 pinout, TPS54140QDRCRQ1 application, or TPS54140QDRCRQ1 equivalent, key selection criteria include input UVLO adjustability via EN pin, BOOT-PH undervoltage lockout for 100% duty-cycle operation, RT/CLK synchronization capability, SS/TR sequencing support, and thermal shutdown at 182°C - all validated for AEC-Q100 Grade 1 (–40°C to +125°C ambient).
Technical Context
This current-mode buck regulator implements fixed-frequency PWM control with slope compensation to prevent subharmonic oscillation across full duty cycle range. Its transconductance error amplifier (97 μA/V typical) compares VSENSE against either 0.8-V internal reference or SS/TR voltage, enabling precise output tracking and soft-start ramp control.
The device integrates a boot charge circuit with UVLO monitoring on BOOT–PH (threshold 2.1 V), enabling high-duty-cycle operation and dropout recovery via low-side diode conduction. Its PLL-based RT/CLK pin supports both resistor-set frequency tuning (100 kHz–2.5 MHz) and external clock synchronization with 100-μs lock time.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.5 V to 42 V - supports 12-V and 24-V automotive battery rails including cold-crank transients up to 42 V. |
| Output Current | 1.5 A continuous - delivered via integrated 200-mΩ high-side MOSFET (at 12 VIN, 25°C), enabling compact single-chip solution. |
| Quiescent Current | 116 μA - enables ultra-low-power sleep mode during light loads, critical for always-on automotive modules. |
| Switching Frequency | 100 kHz to 2.5 MHz - adjustable via RT resistor or external CLK signal; allows optimization of efficiency vs. size using small inductors & capacitors. |
| Reference Voltage | 0.8 V ±2% - stable over –40°C to +150°C junction temperature, used with external resistor divider to set output voltage (e.g., 3.3 V or 5 V). |
| Power-Good Threshold | 92%–109% of nominal VOUT - open-drain PWRGD asserts low outside this window, supporting system-level fault detection and sequencing. |
| Thermal Shutdown | 182°C - protects against sustained overload; recovery requires junction temperature fall below hysteresis threshold. |
Pinout & Package
TPS54140QDRCRQ1 is housed in a 10-pin SON (Small Outline No-lead) package with exposed thermal pad (DRC), optimized for high-power-density automotive PCB layouts and efficient heat dissipation (θJA = 56.5°C/W on standard board).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Main input supply connection | Accepts 3.5–42 V; powers internal bias circuits and high-side gate driver; must be decoupled near package. |
| GND | Power and signal ground reference | Common return path; thermal pad must be soldered to PCB ground plane for thermal and electrical performance. |
| BOOT | High-side gate drive bootstrap node | Connects to 0.1-μF X7R/X5R ceramic capacitor between BOOT and PH; monitored for UVLO to prevent shoot-through. |
| VSENSE | Inverting input of error amplifier | Feedback node for output regulation; compares against 0.8-V reference or SS/TR voltage; max input 3 V. |
| COMP | Error amplifier output | Drives PWM comparator; connects to RC compensation network (to GND) for loop stability and transient response. |
| EN | Enable and UVLO adjustment input | Pulled up internally (0.9 μA); float = enabled; <1.2 V = disabled; supports resistor-divider UVLO hysteresis. |
| RT/CLK | Frequency setting / clock sync input | Resistor-to-GND sets fSW; >2.2 V triggers PLL sync mode; supports external clock input with 40-ns min pulse width. |
| SS/TR | Slow-start and tracking control | Charged by 2-μA current source; overrides reference during startup; enables output sequencing and inrush limiting. |
| PWRGD | Open-drain power-good indicator | Asserts low when VOUT <92% or >109% of nominal; requires external pull-up; leakage <10 nA at 5.5 V. |
| PH | Power switch source terminal | Connects to inductor and BOOT capacitor; carries high di/dt switching current; layout critical for EMI and efficiency. |
Key Features
| Feature | Design Value |
|---|---|
| Eco-mode™ pulse-skipping | Reduces no-load input current to 116 μA by disabling switching until output droop triggers wake-up - extends battery life in always-on systems. |
| Adjustable UVLO with hysteresis | EN pin supports resistor-divider configuration to raise default 2.5-V UVLO threshold and add programmable hysteresis (e.g., 0.9 μA + 2.9 μA). |
| Integrated boot recharge diode | Eliminates external Schottky diode; reduces BOM count and layout area while maintaining reliable high-side gate drive under 100% duty cycle. |
| PLL-based RT/CLK synchronization | Enables deterministic timing alignment with system clocks; lock time <100 μs ensures fast re-synchronization after clock interruptions. |
| Overvoltage protection via PWRGD | OV comparator disables high-side MOSFET when VSENSE >109% VREF, preventing output overshoot during load dump or transient events. |
Applications
| Automotive Infotainment Power Supply | ADAS Camera Module Bias Rail |
|---|---|
|
Use Scenario: Powers display controllers, audio codecs, and USB hubs in head-unit systems with wide-input 12-V battery rail subject to cold-crank and load-dump transients. IC Role / Device Role / Timing Role: Primary buck regulator delivering stable 3.3-V/5-V outputs; PWRGD signals MCU when rail is valid; SS/TR enables controlled power-up sequence. Use Value: 42-V absolute max rating withstands 36-V load-dump spikes; 116-μA quiescent current meets ISO 16750-2 standby requirements; AEC-Q100 Grade 1 qualification ensures reliability. |
Use Scenario: Supplies image sensor and ISP in rear-view or surround-view cameras requiring low-noise, tightly regulated 1.8-V or 2.8-V rails. IC Role / Device Role / Timing Role: Secondary buck stage stepping down from main 5-V domain; RT/CLK synchronized to system pixel clock to minimize switching noise in analog video paths. Use Value: Adjustable switching frequency avoids sensitive frequency bands; Eco-mode maintains efficiency at microamp-level sensor idle currents; thermal shutdown prevents damage during sealed housing operation. |
| Industrial Telematics Gateway | Electric Power Steering (EPS) Auxiliary Rail |
|
Use Scenario: Generates isolated 3.3-V logic supply for cellular modem, GNSS receiver, and CAN transceivers in vehicle-to-cloud communication units. IC Role / Device Role / Timing Role: High-reliability DC/DC converter with EN-controlled sequencing; PWRGD feeds watchdog timer; BOOT-PH UVLO ensures robustness during deep discharge. Use Value: 150°C max junction temperature supports under-hood mounting; 1.3-μA shutdown current enables firmware-controlled deep sleep; MSOP/DRC package options allow layout flexibility. |
Use Scenario: Provides auxiliary 5-V rail for EPS motor controller logic, position sensors, and interface ICs in safety-critical steering systems. IC Role / Device Role / Timing Role: Safety-relevant power converter with diagnostic PWRGD output; SS/TR tracks main MCU supply for coordinated reset behavior. Use Value: AEC-Q100 Grade 1 qualification and built-in OV/UV/thermal protections meet ASIL-B functional safety requirements; 200-mΩ RDS(on) minimizes power loss at 1.5-A peak load. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM5143AQDGQRQ1 | 42-V, 3-A dual-channel synchronous buck; higher current, spread-spectrum EMI reduction, no Eco-mode | Used where >1.5-A output or multi-rail generation is required; lacks pulse-skipping for ultra-low-IQ | Select when higher output current or EMI-sensitive environments dominate; not drop-in due to different pinout and control architecture. |
| TPS54340QDRCRQ1 | 42-V, 3-A variant of same family; identical pinout, package, and feature set except higher current limit (3 A vs 1.5 A) | Direct replacement where higher load current is needed without changing PCB layout or compensation | Choose for scalability - same footprint, same control features, only RDS(on) and current limit differ; verified pin-compatible per TI documentation. |
Compared with LM5143AQDGQRQ1, TPS54140QDRCRQ1 offers superior light-load efficiency via Eco-mode but lower output current; versus TPS54340QDRCRQ1, it provides identical functionality at reduced cost and thermal footprint for sub-2-A applications - making it optimal for space-constrained, always-on automotive nodes.
Availability
TPS54140QDRCRQ1 is available at Aetrix Electronics and suitable for automotive infotainment, ADAS camera modules, and telematics gateways requiring stable component supply with AEC-Q100 qualification, long-term lifecycle assurance, and traceable sourcing.
Supply support for TPS54140QDRCRQ1 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 automotive ICs, with decades of experience in power management innovation and automotive qualification.
The TPS54140-Q1 belongs to TI's SWIFT™ automotive DC/DC converter product line, designed specifically for high-reliability, wide-input-voltage power conversion in harsh automotive environments - emphasizing efficiency at light loads, robust fault protection, and seamless integration into vehicle E/E architectures.
FAQ
What is the maximum input voltage rating for TPS54140QDRCRQ1?
The TPS54140QDRCRQ1 has an absolute maximum input voltage rating of 47 V, with specified operational range from 3.5 V to 42 V. This 42-V operating limit ensures compatibility with 24-V commercial vehicles and 12-V automotive systems under load-dump conditions per ISO 7637-2, while the 47-V absolute max guards against transient overstress.
How does the Eco-mode™ function improve efficiency in TPS54140QDRCRQ1?
Eco-mode™ in the TPS54140QDRCRQ1 enables pulse-skipping operation at light loads, reducing switching activity and gate drive losses. When output voltage remains within regulation, the device enters sleep mode drawing only 116 μA input current - significantly extending battery runtime in always-on automotive modules like telematics or alarm systems.
Can TPS54140QDRCRQ1 synchronize to an external clock, and what are the timing requirements?
Yes, TPS54140QDRCRQ1 supports external clock synchronization via its RT/CLK pin. When pulled above 2.2 V, the internal oscillator disables and the pin becomes a high-impedance clock input to the PLL. Minimum clock pulse width is 40 ns, and PLL lock time is ≤100 μs - enabling deterministic timing alignment with system clocks for EMI reduction in noise-sensitive applications.
What is the role of the BOOT–PH UVLO circuit in TPS54140QDRCRQ1?
The BOOT–PH UVLO circuit monitors the bootstrap capacitor voltage and forces the high-side MOSFET off if it falls below 2.1 V. This prevents shoot-through and ensures safe gate drive during 100% duty-cycle operation or dropout conditions. The low-side diode then conducts to recharge the BOOT capacitor, enabling robust low-VIN/VOUT ratio operation.
How is output voltage adjusted on TPS54140QDRCRQ1, and what tolerance is achievable?
Output voltage on TPS54140QDRCRQ1 is set using a resistor divider from VOUT to VSENSE, referenced to the 0.8-V internal bandgap (±2% over temperature). Using 1% tolerance resistors yields typical output accuracy of ±2.5%; tighter tolerances and Kelvin sensing further improve precision in production designs.
TPS54140QDRCRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- Eco-Mode™
- Package/Case:
- 10-VFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3.5V
- Voltage - Input (Max):
- 42V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 39V
- Current - Output:
- 1.5A
- Frequency - Switching:
- 100kHz ~ 2.5MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-VSON (3x3)
TPS54140QDRCRQ1 FAQ
1.How can I place an order for TPS54140QDRCRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS54140QDRCRQ1 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 TPS54140QDRCRQ1 reliable?
The price and inventory of TPS54140QDRCRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS54140QDRCRQ1 is usually 5 days.
3.What payment methods are accepted for TPS54140QDRCRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS54140QDRCRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS54140QDRCRQ1?
TPS54140QDRCRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS54140QDRCRQ1 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 TPS54140QDRCRQ1?
For technical support, including TPS54140QDRCRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS54140QDRCRQ1 requirements.
6.How does Aetrix verify that TPS54140QDRCRQ1 is sourced from the original manufacturer or authorized distributors?
All TPS54140QDRCRQ1 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 TPS54140QDRCRQ1 meets industry standards.
7.What is the process for return or replacement of TPS54140QDRCRQ1?
All TPS54140QDRCRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS54140QDRCRQ1, 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 TPS54140QDRCRQ1 part is unused and in its original packaging.
Return procedure for TPS54140QDRCRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPS54140QDRCRQ1 Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
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…
