My Inquiry
My Account
Texas Instruments TPS54361DPRR
- Part No.:
- TPS54361DPRR
- Manufacturer:
- Texas Instruments
- Package:
- 10-WDFN Exposed Pad
- Datasheet:
-
TPS54361DPRR.pdf
- Description:
- IC REG BCK SPLIT RAIL ADJ 10WSON
- Quantity:
- Payment:
- Shipping:
Inventory:3,244
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TPS54361 from Texas Instruments is a 4.5-V to 60-V input, 3.5-A synchronous step-down DC-DC converter with integrated 89-mΩ high-side N-channel MOSFET, Eco-Mode™ pulse-skipping for light-load efficiency, adjustable 100-kHz to 2.5-MHz switching frequency, and 0.8-V ±1% internal voltage reference. It delivers regulated output in industrial power systems requiring robust load-dump survival (65 V per ISO 7637) and precise sequencing.
For engineers reviewing the TPS54361 datasheet, TPS54361 pinout, TPS54361 application, or TPS54361 equivalent, key selection considerations include its wide VIN range, integrated BOOT recharge FET enabling near-100% duty cycle operation, UV/OV power-good monitoring, adjustable soft-start/tracking, and current-mode control with external compensation via COMP pin.
Technical Context
The TPS54361 implements constant-frequency peak current-mode control with slope compensation to prevent subharmonic oscillation above 50% duty cycle. Its error amplifier drives the COMP pin to regulate FB voltage to 0.8 V, while RT/CLK supports resistor-programmed frequency or external clock synchronization via PLL.
It features dual-stage protection: cycle-by-cycle current limiting with 4.5–6.8-A threshold, thermal shutdown at 176°C with 12°C hysteresis, and independent UVLO (4.3 V typ., adjustable via EN divider) and BOOT-SW UVLO (3.7 V rising). The PWRGD open-drain output asserts low when FB falls below 93% or rises above 106% of nominal.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5 V to 60 V - supports 12 V, 24 V, and 48 V industrial/automotive rails and survives ISO 7637 load dump pulses up to 65 V. |
| Output Current | 3.5 A continuous - delivered via integrated 89-mΩ high-side MOSFET with thermal pad for enhanced power dissipation. |
| Switching Frequency | 100 kHz to 2.5 MHz - adjustable via RT/CLK resistor or external clock; enables optimization of efficiency vs. size of inductor/capacitor. |
| Quiescent Current | 152 μA (no-load, non-switching), 2 μA (shutdown) - enables battery-backed or always-on systems with minimal standby loss. |
| Reference Voltage | 0.8 V ±1% - sets minimum output; FB resistive divider scales higher outputs (e.g., 3.3 V, 5 V, 12 V) with tight regulation accuracy. |
| Power-Good Threshold | 93% to 106% of nominal VOUT - open-drain PWRGD signals valid regulation; hysteresis prevents chatter during transients. |
| Soft-Start Control | SS/TR pin with external capacitor - controls output ramp time and enables tracking/sequencing for multi-rail systems. |
| Operating Junction Temp | –40°C to 150°C - rated for under-hood automotive and high-temp industrial environments. |
Pinout & Package
TPS54361 is housed in a thermally enhanced 10-pin WSON package (4.0 mm × 4.0 mm) with exposed thermal pad that must be soldered to PCB ground for proper thermal performance and electrical stability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| BOOT | Bootstrap supply node | Connects external capacitor between BOOT and SW to generate gate drive voltage for high-side MOSFET; includes integrated recharge FET for high-duty-cycle operation. |
| VIN | Main input supply | Accepts 4.5–60 V input; powers internal circuitry and high-side driver; withstands 65 V transient per ISO 7637. |
| GND | Power and signal ground | Common return path; thermal pad must be electrically connected to PCB ground plane for thermal management and noise reduction. |
| SW | Switching node | Source of internal high-side MOSFET; connects to external inductor and catch diode/capacitor; carries high dv/dt and peak currents. |
| FB | Feedback input | Inverting input of transconductance error amplifier; regulates output by comparing divided VOUT to 0.8 V reference. |
| COMP | Error amplifier output | Drives PWM comparator; connects external RC compensation network to stabilize loop response and ensure phase margin. |
| EN | Enable/UVLO control | Pull low (<1.2 V) to disable; internal pullup enables floating; external resistor divider adjusts UVLO threshold and hysteresis. |
| RT/CLK | Frequency programming | Resistor-to-ground sets switching frequency (100 kHz–2.5 MHz); pulled above 1.55 V to accept external clock sync via PLL. |
| SS/TR | Soft-start & tracking | Capacitor sets startup ramp time; voltage override enables power sequencing and output tracking across multiple rails. |
| PWRGD | Power-good indicator | Open-drain output asserting low when VOUT is outside 93–106% window; requires external pullup for system monitoring. |
Key Features
| Feature | Design Value |
|---|---|
| Eco-Mode™ pulse skipping | Reduces no-load quiescent current to 152 µA by disabling switching while maintaining regulation via controlled burst mode. |
| Integrated BOOT recharge FET | Enables >95% duty cycle operation without external diode; supports low-dropout applications like 12 V → 5 V or 5 V → 3.3 V. |
| Adjustable UVLO with hysteresis | EN pin accepts resistor divider to set custom start/stop thresholds (e.g., 9 V start / 7.5 V stop) for brownout immunity. |
| UV/OV power-good output | PWRGD provides system-level fault detection for undervoltage, overvoltage, thermal shutdown, or enable disable events. |
| Current-mode control with slope comp | Ensures stable operation across full duty cycle range; simplifies compensation and improves transient response vs. voltage-mode. |
| Thermal shutdown with hysteresis | Shuts down at 176°C junction temperature and restarts only after cooling by ≥12°C, preventing thermal cycling damage. |
Applications
| Industrial Motor Drive Power | Automotive Infotainment Supply |
|---|---|
Use Scenario: Powers microcontrollers, gate drivers, and sensors in PLC I/O modules operating from 24 V DC bus with frequent load transients. IC Role / Device Role / Timing Role: Primary buck regulator delivering stable 5 V or 3.3 V rail; uses SS/TR for coordinated startup with FPGA and analog front-end. Use Value: Survives 65 V load dump pulses and maintains regulation during motor stall events; Eco-Mode cuts standby power in sleep modes. | Use Scenario: Supplies USB charging ports and display controllers in vehicle head units powered from 12 V battery with cold-crank (4.5 V) and load-dump (65 V) extremes. IC Role / Device Role / Timing Role: Input-stage buck converter stepping 12 V down to 5 V; PWRGD signals host processor when output is valid post-cold-crank. Use Value: Adjustable UVLO prevents false turn-on during cranking; integrated BOOT FET ensures reliable 5 V delivery even at 6 V input. |
| USB Dedicated Charging Port | 48 V Telecom Power Conversion |
Use Scenario: Implements BC1.2-compliant USB charger in wall adapters or docking stations using 12 V or 24 V input. IC Role / Device Role / Timing Role: Constant-voltage buck stage regulating 5 V output; COMP pin used for dynamic current limit adjustment during D+/D− handshake. Use Value: 3.5 A capability supports 5 V @ 2.4 A charging; Eco-Mode minimizes no-load consumption to meet Energy Star requirements. | Use Scenario: Generates intermediate 12 V or 5 V rails from 48 V backplane in telecom equipment with strict thermal constraints. IC Role / Device Role / Timing Role: High-efficiency point-of-load regulator; RT/CLK synchronized to system clock to reduce EMI in dense board layouts. Use Value: 2.5 MHz max switching enables ultra-small 1 µH inductors; WSON thermal pad dissipates heat in confined spaces without heatsinks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM5164QPWPRQ1 | 4.5–65 V input, 3.5 A, 1.5-MHz max, no integrated BOOT FET, requires external bootstrap diode. | Lacks integrated BOOT recharge FET; less suitable for high-duty-cycle or space-constrained designs. | Choose when higher VIN max (65 V) is required and external diode layout is acceptable. |
| MP2451DT-LF-Z | 4.5–36 V input, 2 A, fixed 2-MHz switching, no Eco-Mode, no PWRGD, smaller 8-pin SOIC package. | Lower current, narrower VIN range, no power-good signaling or light-load efficiency optimization. | Choose for cost-sensitive, lower-power 24 V applications where sequencing and fault reporting are not critical. |
Compared with LM5164QPWPRQ1 and MP2451DT-LF-Z, the TPS54361 uniquely combines 60 V rating, integrated BOOT FET, Eco-Mode, and PWRGD in a thermally optimized WSON package-making it optimal for automotive and industrial buck converters demanding reliability, efficiency, and system visibility.
Availability
TPS54361 is available at Aetrix Electronics and suitable for industrial motor control, automotive infotainment, USB charging ports, and 48 V telecom power systems requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for TPS54361 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 decades of expertise in high-reliability power conversion solutions.
The TPS54361 belongs to TI's SWIFT™ family of high-input-voltage DC-DC converters, designed specifically for rugged industrial and automotive applications where wide VIN range, load-dump immunity, and precise power sequencing are essential.
FAQ
What is the maximum input voltage the TPS54361 can withstand without damage?
The TPS54361 has an absolute maximum VIN rating of 65 V, allowing it to survive ISO 7637-2 load dump transients common in automotive 12 V systems. Its recommended operating input range is 4.5 V to 60 V. Operation beyond 60 V is limited to short-duration transients only; sustained voltage above 60 V may trigger overvoltage protection or cause permanent damage. Always verify transient clamping and filtering in the front-end design when using TPS54361 in automotive environments.
How does the TPS54361 achieve high efficiency at light loads?
The TPS54361 achieves high light-load efficiency through Eco-Mode™ pulse skipping: when output current drops below ~25 mA, the device disables switching cycles while maintaining regulation via controlled bursts. This reduces gate drive and switching losses, lowering no-load quiescent current to 152 µA. The COMP pin is clamped at 600 mV during Eco-Mode, and the internal PLL remains active to preserve synchronization capability. This behavior is confirmed in the SLVSC39D datasheet Figure 46 and Section 7.3.3.
Can the TPS54361 be synchronized to an external clock, and how is it configured?
Yes, the TPS54361 supports external clock synchronization via the RT/CLK pin. When the pin voltage exceeds 1.55 V (typ.), the internal oscillator amplifier disables and the pin becomes a high-impedance clock input to the internal PLL. A falling edge on this signal synchronizes the high-side MOSFET turn-on. If the external clock stops, the amplifier re-enables and returns to resistor-programmed mode. This feature is documented in Pin Functions (Section 5) and Switching Characteristics (Section 6.7) of the SLVSC39D datasheet.
What is the role of the BOOT pin, and why is a BOOT capacitor required?
The BOOT pin supplies gate drive voltage to the internal high-side N-channel MOSFET. A capacitor between BOOT and SW provides the floating bias needed to turn on the MOSFET when SW is near ground. During each off-cycle, the integrated BOOT recharge FET charges this capacitor, enabling reliable operation up to ~98% duty cycle. Without the BOOT capacitor, the high-side switch cannot activate, causing complete converter failure. The SLVSC39D datasheet specifies typical values (e.g., 0.1 µF X7R) and placement guidelines in Section 8.2.1.
Does the TPS54361 provide power-good status, and how is it implemented?
Yes, the TPS54361 provides power-good status via the open-drain PWRGD pin. It asserts low when FB voltage falls below 93% or rises above 106% of the nominal output, indicating undervoltage, overvoltage, thermal shutdown, or EN disable. An external pullup resistor (typically 10 kΩ) is required. The PWRGD output has 45 Ω typical on-resistance and supports system-level sequencing and fault logging. This function is detailed in Section 6.5 Electrical Characteristics and Pin Functions of the SLVSC39D datasheet.
TPS54361DPRR 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):
- 60V
- Current - Output:
- 3.5A
- Frequency - Switching:
- 100kHz ~ 2.5MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-WSON (4x4)
TPS54361DPRR FAQ
1.How can I place an order for TPS54361DPRR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS54361DPRR 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 TPS54361DPRR reliable?
The price and inventory of TPS54361DPRR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS54361DPRR is usually 5 days.
3.What payment methods are accepted for TPS54361DPRR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS54361DPRR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS54361DPRR?
TPS54361DPRR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS54361DPRR 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 TPS54361DPRR?
For technical support, including TPS54361DPRR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS54361DPRR requirements.
6.How does Aetrix verify that TPS54361DPRR is sourced from the original manufacturer or authorized distributors?
All TPS54361DPRR 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 TPS54361DPRR meets industry standards.
7.What is the process for return or replacement of TPS54361DPRR?
All TPS54361DPRR units undergo pre-shipment inspection (PSI). If there is an issue with TPS54361DPRR, 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 TPS54361DPRR part is unused and in its original packaging.
Return procedure for TPS54361DPRR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPS54361DPRR 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…
