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Texas Instruments TPS54361QDPRTQ1
- Part No.:
- TPS54361QDPRTQ1
- Manufacturer:
- Texas Instruments
- Package:
- 10-WDFN Exposed Pad
- Datasheet:
-
TPS54361QDPRTQ1.pdf
- Description:
- IC REG BCK SPLIT RAIL ADJ 10WSON
- Quantity:
- Payment:
- Shipping:
Inventory:320
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Product details
Overview
TPS54361QDPRTQ1 from Texas Instruments is an automotive-grade 4.5-V to 60-V input, 3.5-A synchronous step-down DC-DC converter with integrated 87-mΩ high-side MOSFET, Eco-mode™ pulse-skipping for light-load efficiency, and adjustable 100-kHz to 2.5-MHz switching frequency. It delivers regulated output down to 0.8 V with ±1% reference accuracy and supports vehicle accessories, USB charging ports, and 12/24/48-V industrial power systems.
For engineers reviewing the TPS54361QDPRTQ1 datasheet, TPS54361QDPRTQ1 pinout, TPS54361QDPRTQ1 application, or TPS54361QDPRTQ1 equivalent, key selection criteria include its AEC-Q100 Grade 1 qualification (–40°C to 125°C ambient), 2-μA shutdown current, UV/OV power-good monitoring, soft-start/sequencing capability via SS/TR pin, and RT/CLK synchronization support.
Technical Context
The TPS54361QDPRTQ1 implements constant-frequency peak current-mode control with internal slope compensation to prevent sub-harmonic oscillation above 50% duty cycle. Its error amplifier drives the COMP pin to regulate FB voltage against a 0.8-V reference, while cycle-by-cycle current limiting and thermal shutdown protect under fault conditions.
It integrates a bootstrap recharge FET to sustain high-duty-cycle operation near VIN–VO dropout, and features a PLL-based RT/CLK pin that supports both resistor-programmed frequency (100 kHz–2.5 MHz) and external clock synchronization. The PWRGD open-drain output asserts low when FB falls outside 93–106% of nominal regulation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5 V to 60 V - supports load dump pulses up to 65 V per ISO 7637 in automotive environments |
| Output Current | 3.5 A continuous - enables single-stage conversion from 12 V/24 V/48 V rails to 3.3 V/5 V/12 V loads |
| Switching Frequency | 100 kHz to 2.5 MHz - adjustable via RT resistor or external clock; allows optimization of efficiency vs. inductor/capacitor size |
| Quiescent Current | 152 μA - maintains high light-load efficiency without compromising startup time or regulation stability |
| Reference Voltage | 0.8 V ±1% - sets minimum output voltage; enables precise feedback divider design for any higher VO |
| High-Side RDS(on) | 87 mΩ typical - reduces conduction loss at full load; supports >90% efficiency at 12 V → 5 V, 3.5 A |
| Shutdown Current | 2 μA - minimizes battery drain in always-on automotive modules during sleep mode |
Pinout & Package
TPS54361QDPRTQ1 is housed in a thermally enhanced 10-pin WSON (4 mm × 4 mm) package with exposed thermal pad, requiring PCB-level GND connection for optimal thermal performance and electrical stability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| BOOT | Bootstrap supply node | Drives high-side MOSFET gate; requires 0.1-μF ceramic capacitor to SW for gate charge replenishment |
| VIN | Main input supply | Accepts 4.5–60 V; withstands 65-V transients per ISO 7637; connects to bulk input capacitance |
| GND | Power and signal reference | Common return path; must be connected to exposed thermal pad for thermal and EMI performance |
| SW | Switching node | Source of internal high-side MOSFET; connects to external inductor and bootstrap capacitor |
| FB | Feedback input | Inverting input of error amplifier; used with resistor divider to set output voltage relative to 0.8-V reference |
| COMP | Error amplifier output | Drives PWM comparator; connects to external RC compensation network for loop stability |
| EN | Enable / UVLO control | Pull below 1.2 V to disable; internal pullup enables floating operation; external resistor divider adjusts UVLO threshold |
| RT/CLK | Frequency programming / sync input | Resistor-to-GND sets frequency; pulled above 1.55 V to enter external clock sync mode with PLL lock |
| SS/TR | Soft-start / tracking control | Capacitor sets ramp time; voltage override enables sequencing with other regulators or tracking of master rail |
| PWRGD | Power-good indicator | Open-drain output asserting low when FB is outside 93–106% of target; requires external pullup resistor |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Rated for –40°C to 125°C ambient operation - validated for automotive infotainment, ADAS, and body electronics |
| Eco-mode™ pulse skipping | Reduces switching losses at light loads by clamping COMP at 600 mV - achieves >85% efficiency at 10-mA load |
| Integrated BOOT recharge FET | Enables >95% duty cycle operation - supports output voltages up to ~VIN − 0.5 V without external diode |
| Adjustable UVLO with hysteresis | Internal 4.3-V threshold with 325-mV hysteresis; externally programmable via EN pin resistors - prevents brownout oscillation |
| UV/OV power-good monitoring | PWRGD asserts low on undervoltage (FB < 93%), overvoltage (FB > 106%), thermal shutdown, or EN disable - enables system-level fault response |
| 100-kHz to 2.5-MHz frequency range | Wider than standard buck controllers - permits use of smaller magnetics at high frequencies or lower EMI at sub-500-kHz settings |
Applications
| Automotive Infotainment Power | USB Dedicated Charging Port (DCP) |
|---|---|
Use Scenario: Powering GPS navigation units, head units, and display controllers in vehicles with 12-V or 24-V battery rails. IC Role / Device Role / Timing Role: Primary step-down regulator delivering stable 5-V or 3.3-V rail from unregulated vehicle battery with load dump tolerance. Use Value: Survives 65-V ISO 7637 transients; Eco-mode extends battery runtime during idle; PWRGD enables safe system boot sequencing. |
Use Scenario: Providing BC1.2-compliant 5-V/1.5-A charging output from 12-V vehicle power for smartphones and tablets. IC Role / Device Role / Timing Role: High-efficiency buck converter with tight output regulation and fast transient response for dynamic load profiles. Use Value: 3.5-A capability supports multiple USB ports; adjustable soft-start prevents inrush into large output capacitors; RT/CLK sync avoids EMI interference with radio bands. |
| Industrial 48-V Telecom Power | Automotive Camera Module Supply |
Use Scenario: Generating isolated or non-isolated 12-V or 5-V bias rails from 48-V PoE++ or telecom distribution buses. IC Role / Device Role / Timing Role: Front-end DC-DC stage converting high-input industrial voltage to intermediate bus with minimal external components. Use Value: 60-V absolute max rating accommodates 48-V surge margins; 87-mΩ RDS(on) ensures <1-W conduction loss at full load; thermal pad enables convection-only cooling. |
Use Scenario: Powering CMOS image sensors and ISP processors in rear-view or surround-view cameras with strict EMI and thermal constraints. IC Role / Device Role / Timing Role: Compact, low-noise point-of-load regulator with precise soft-start to avoid sensor reset glitches during ignition. Use Value: WSON-10 package fits space-constrained camera housings; SS/TR pin enables synchronized startup with SoC; 152-μA quiescent current meets ASAM sleep requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down DC-DC converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM5164QPWPRQ1 | 4.5–65-V input, 0.6-A, 1.5-MHz fixed-frequency; no Eco-mode; lower current rating | Suitable for low-power auxiliary rails only; lacks PWRGD and adjustable UVLO | Select when footprint and BOM count are prioritized over output current and feature richness |
| TPS54561QDPRTQ1 | Same family, 4.5–60-V input, 5-A output, identical pinout and features | Direct upgrade path for higher-current designs; shares layout, compensation, and firmware | Choose when future-proofing for >3.5-A loads or margin expansion without redesign |
Compared with LM5164QPWPRQ1, TPS54361QDPRTQ1 delivers 3.5× more output current and adds Eco-mode, PWRGD, and soft-start sequencing-making it suitable for primary power rails. Versus TPS54561QDPRTQ1, it offers identical functionality at lower cost and thermal footprint where 3.5-A suffices.
Availability
TPS54361QDPRTQ1 is available at Aetrix Electronics and suitable for automotive infotainment, USB charging ports, and 48-V industrial power systems requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for TPS54361QDPRTQ1 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 ICs, with deep expertise in automotive-grade reliability and functional safety.
TPS54361QDPRTQ1 belongs to TI's automotive-qualified DC-DC converter portfolio, designed specifically for robust, high-efficiency power conversion in safety-critical vehicle subsystems operating from 12-V, 24-V, and 48-V batteries.
FAQ
What is the maximum input voltage the TPS54361QDPRTQ1 can withstand during load dump events?
The TPS54361QDPRTQ1 is rated for 65-V absolute maximum input voltage per ISO 7637-2 Pulse 5a testing, enabling reliable operation in automotive environments where alternator load dump transients occur. This rating is verified across temperature and process corners, and the device remains functional without latch-up or degradation when exposed to short-duration 65-V spikes. The TPS54361QDPRTQ1 internal protection circuitry ensures continued regulation after transient recovery.
How does the Eco-mode™ function in the TPS54361QDPRTQ1 improve light-load efficiency?
Eco-mode™ in the TPS54361QDPRTQ1 reduces switching activity at light loads by clamping the COMP pin at 600 mV, disabling the high-side MOSFET until output droop triggers error amplifier recovery. This eliminates gate drive and switching losses, lowering quiescent current to 152 μA and sustaining >85% efficiency at 10-mA output. The TPS54361QDPRTQ1 maintains PLL synchronization even in Eco-mode, ensuring predictable timing behavior during burst-mode transitions.
Can the TPS54361QDPRTQ1 synchronize to an external clock, and what are the timing requirements?
Yes, the TPS54361QDPRTQ1 synchronizes to an external clock via the RT/CLK pin when driven above 1.55 V, engaging its internal PLL. Minimum CLK pulse width is 15 ns, and PLL lock-in time is 78 μs at 500 kHz. The TPS54361QDPRTQ1 supports 160–2300 kHz external clock range and automatically reverts to resistor-programmed mode if clocking stops. This capability enables EMI reduction through frequency alignment in multi-rail systems.
What is the purpose of the SS/TR pin on the TPS54361QDPRTQ1, and how is it configured for sequencing?
The SS/TR pin on the TPS54361QDPRTQ1 controls soft-start ramp time via an external capacitor and enables voltage tracking via a resistor divider. For sequencing, connect SS/TR to the FB pin of a master regulator to force the TPS54361QDPRTQ1 output to follow the master rail. During faults, SS/TR discharges fully to ensure repeatable restart behavior. The TPS54361QDPRTQ1 uses this pin to coordinate power-up order in multi-rail systems such as ADAS domain controllers.
Does the TPS54361QDPRTQ1 require an external bootstrap diode, and why or why not?
No, the TPS54361QDPRTQ1 integrates a bootstrap recharge FET, eliminating the need for an external bootstrap diode. This internal FET automatically refreshes the BOOT-to-SW capacitor during low-side conduction, sustaining gate drive for the high-side MOSFET even at >95% duty cycles. The TPS54361QDPRTQ1 thus simplifies layout, reduces BOM count, and improves reliability compared to controllers requiring discrete bootstrap diodes.
TPS54361QDPRTQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- Eco-Mode™
- Package/Case:
- 10-WDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck, Split Rail
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4.5V
- Voltage - Input (Max):
- 60V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 58.8V
- Current - Output:
- 3.5A
- 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-WSON (4x4)
TPS54361QDPRTQ1 FAQ
1.How can I place an order for TPS54361QDPRTQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS54361QDPRTQ1 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 TPS54361QDPRTQ1 reliable?
The price and inventory of TPS54361QDPRTQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS54361QDPRTQ1 is usually 5 days.
3.What payment methods are accepted for TPS54361QDPRTQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS54361QDPRTQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS54361QDPRTQ1?
TPS54361QDPRTQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS54361QDPRTQ1 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 TPS54361QDPRTQ1?
For technical support, including TPS54361QDPRTQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS54361QDPRTQ1 requirements.
6.How does Aetrix verify that TPS54361QDPRTQ1 is sourced from the original manufacturer or authorized distributors?
All TPS54361QDPRTQ1 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 TPS54361QDPRTQ1 meets industry standards.
7.What is the process for return or replacement of TPS54361QDPRTQ1?
All TPS54361QDPRTQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS54361QDPRTQ1, 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 TPS54361QDPRTQ1 part is unused and in its original packaging.
Return procedure for TPS54361QDPRTQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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