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Texas Instruments TPS54341DPRT
- Part No.:
- TPS54341DPRT
- Manufacturer:
- Texas Instruments
- Package:
- 10-WDFN Exposed Pad
- Datasheet:
-
TPS54341DPRT.pdf
- Description:
- IC REG BCK SPLIT RAIL ADJ 10WSON
- Quantity:
- Payment:
- Shipping:
Inventory:2,092
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Product details
Overview
TPS54341DPRT from Texas Instruments is a 4.5-V to 42-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, 0.8-V ±1% internal reference, and adjustable 100-kHz–2.5-MHz switching frequency. It delivers regulated 3.3-V or 5-V outputs in industrial power supplies and automotive accessories.
For engineers reviewing the TPS54341DPRT datasheet, TPS54341DPRT pinout, TPS54341DPRT application, or TPS54341DPRT equivalent, key selection criteria include input voltage range (4.5–42 V), output current capability (3.5 A continuous), thermal performance (RθJA = 35.1°C/W), soft-start/tracking control, and power-good monitoring with 93–106% regulation window.
Technical Context
The TPS54341DPRT implements constant-frequency peak-current-mode control with internal slope compensation to prevent subharmonic oscillation above 50% duty cycle. Its error amplifier features dual transconductance (350 μA/V normal, 77 μA/V during soft-start) and supports external Type-II/III compensation via COMP pin.
It integrates BOOT capacitor recharge FET for low-dropout operation down to ~100% duty cycle, with BOOT-SW UVLO at 2.1 V and automatic recovery. The RT/CLK pin enables resistor-programmed frequency or external clock synchronization with PLL lock-in time of 78 μs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5 V to 42 V - supports 12-V and 24-V industrial/automotive rails and survives ISO 7637 load-dump pulses up to 45 V. |
| Output Current | 3.5 A continuous - enables single-chip 5-V/3.3-V supply for microcontrollers, sensors, and USB peripherals. |
| Switching Frequency | 100 kHz to 2.5 MHz - adjustable via RT resistor or external clock; allows optimization of inductor size vs. efficiency. |
| Quiescent Current | 152 μA (no-load operating), 2 μA (shutdown) - extends battery life in always-on systems. |
| Feedback Reference | 0.8 V ±1% - sets output voltage via resistor divider; enables precise 3.3-V, 5-V, or custom outputs. |
| Power-Good Window | 93% to 106% of nominal VOUT - open-drain PWRGD signal asserts low outside this band for system sequencing. |
| Thermal Protection | 176°C shutdown with 12°C hysteresis - prevents damage during overload or poor PCB thermal design. |
Pinout & Package
TPS54341DPRT is housed in a thermally enhanced 10-pin WSON package (4.0 mm × 4.0 mm) with exposed thermal pad requiring solder connection to PCB ground plane for reliable 3.5-A operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| BOOT | Bootstrap gate-drive supply node | Connects to SW via 0.1-μF ceramic capacitor; enables high-side MOSFET drive; monitored for UVLO at 2.1 V. |
| VIN | Main input power supply | Accepts 4.5–42 V; includes internal 4.3-V UVLO with adjustable threshold via EN pin resistor divider. |
| GND | Power and signal reference | Common return for all circuits; must be connected to thermal pad for thermal and electrical integrity. |
| SW | Switching node | Drain of internal high-side MOSFET; connects to external inductor and BOOT capacitor; carries high di/dt current. |
| FB | Feedback input | Inverting input of error amplifier; compares output voltage (via resistor divider) to 0.8-V reference for regulation. |
| COMP | Error amplifier output | Connects to external compensation network (RC + C); controls PWM comparator; transconductance = 350 μA/V. |
| EN | Enable and UVLO control | Pull below 1.2 V to disable; internal pull-up enables floating operation; adjusts UVLO threshold with external resistors. |
| RT/CLK | Frequency programming/sync | Resistor-to-ground sets fSW; external clock edges synchronize switching; PLL locks within 78 μs. |
| SS/TR | Soft-start and tracking | Capacitor sets startup ramp time; supports voltage tracking for multi-rail sequencing; discharges on fault for repeatable restart. |
| PWRGD | Power-good status | Open-drain output; low when FB is outside 93–106% of target; requires external pull-up resistor. |
Key Features
| Feature | Design Value |
|---|---|
| Eco-mode™ pulse skipping | Reduces no-load quiescent current to 152 μA while maintaining regulation - critical for battery-backed or energy-harvesting systems. |
| Integrated BOOT recharge FET | Enables >95% duty cycle operation without external diode - supports low dropout (e.g., 12 V → 11.5 V) with minimal BOM count. |
| Adjustable UVLO with hysteresis | Internal 4.3-V threshold with 325-mV hysteresis; externally scalable via EN pin resistors - prevents brownout oscillation in noisy automotive environments. |
| Current-limit protection | 4.5–6.8-A open-loop current limit with 60-ns delay - safeguards MOSFET and inductor during short-circuit or overload events. |
| Thermal shutdown with hysteresis | 176°C trip point with 12°C hysteresis - ensures safe recovery after overheating without cycling on/off near limit. |
Applications
| Industrial Motor Drive Power Supply | Automotive GPS/Infotainment Module |
|---|---|
Use Scenario: Powers MCU, CAN transceiver, and display logic in PLC I/O modules operating from 24-V rail with transient immunity. IC Role / Device Role / Timing Role: Primary buck regulator delivering stable 5-V/3.3-V; handles ISO 7637 load-dump pulses up to 45 V. Use Value: Integrated 87-mΩ MOSFET and BOOT recharge FET eliminate external components; Eco-mode extends standby runtime. | Use Scenario: Generates 5-V USB charging port and 3.3-V logic supply in vehicle-mounted navigation units. IC Role / Device Role / Timing Role: Step-down converter with PWRGD signaling for safe power sequencing during ignition cycles. Use Value: Adjustable soft-start prevents inrush into capacitive loads; RT/CLK sync avoids EMI interference with radio receivers. |
| USB Dedicated Charging Port (DCP) | 12-V/24-V Communications Equipment |
Use Scenario: Implements BC1.2-compliant 5-V/1.5-A charging port in universal car chargers. IC Role / Device Role / Timing Role: Regulated 5-V source with tight output tolerance (±1% ref) and fast transient response for dynamic load changes. Use Value: 3.5-A rating supports multiple ports; PWRGD confirms regulation before enabling downstream USB switches. | Use Scenario: Supplies FPGA core and I/O rails in industrial Ethernet switches powered from 24-V PoE midspan. IC Role / Device Role / Timing Role: High-efficiency buck stage converting 24-V input to 1.2-V/3.3-V; operates across –40°C to 125°C ambient. Use Value: Wide fSW range (100 kHz–2.5 MHz) allows compact magnetics; thermal pad ensures reliability under sustained load. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM5143APWPR | 42-V, 3-A, dual-channel synchronous buck; higher channel count but lower per-channel current (3 A vs. 3.5 A). | Designed for multi-output systems; lacks integrated BOOT recharge FET and Eco-mode. | Choose LM5143APWPR only when dual independent outputs are required; not drop-in for single-rail TPS54341DPRT designs. |
| MP2451DT-LF-Z | 36-V, 0.6-A buck; significantly lower current rating and narrower input range (vs. 42 V/3.5 A). | Targeted at low-power IoT nodes; no PWRGD, no SS/TR, no frequency sync. | MP2451DT-LF-Z is suitable only for sub-1-A applications; cannot replace TPS54341DPRT in 3.5-A industrial or automotive use cases. |
Compared with LM5143APWPR and MP2451DT-LF-Z, the TPS54341DPRT uniquely combines 3.5-A capability, Eco-mode efficiency, BOOT recharge, and PWRGD in a single 10-pin WSON - making it optimal for space-constrained, high-reliability 12–24-V systems where full feature integration matters.
Availability
TPS54341DPRT is available at Aetrix Electronics and suitable for industrial motor drives, automotive infotainment modules, USB charging ports, and 24-V communications equipment requiring stable component supply and long-term production support.
Supply support for TPS54341DPRT 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 automotive and industrial qualification expertise.
The TPS543xx family was designed for rugged, high-efficiency DC-DC conversion in harsh environments - specifically targeting 12-V/24-V industrial, automotive, and communications power systems demanding wide VIN, integrated protection, and thermal robustness.
FAQ
What is the maximum continuous output current of the TPS54341DPRT?
The TPS54341DPRT delivers 3.5 A of continuous output current under recommended operating conditions (TJ ≤ 150°C, proper PCB layout, and thermal pad soldering). This rating assumes adequate heatsinking via the exposed thermal pad and ambient temperature ≤ 85°C. Derating applies above 85°C ambient per the RθJA = 35.1°C/W thermal metric.
Does the TPS54341DPRT support synchronization to an external clock?
Yes, the TPS54341DPRT supports external clock synchronization via the RT/CLK pin. When driven with a clean clock signal exceeding the PLL upper threshold (1.55–2 V), the internal oscillator disables and the device locks to the external clock within 78 μs. This feature reduces EMI by aligning switching edges across multiple converters in dense PCB layouts.
How does the Eco-mode™ function improve light-load efficiency in the TPS54341DPRT?
Eco-mode™ in the TPS54341DPRT enables pulse-skipping operation at light loads, reducing switching losses and lowering no-load quiescent current to 152 μA. This occurs automatically when output current drops below ~200 mA, maintaining regulation while minimizing power draw - ideal for always-on industrial sensors or automotive body-control modules.
What is the purpose of the SS/TR pin on the TPS54341DPRT?
The SS/TR pin on the TPS54341DPRT controls soft-start timing and enables voltage tracking for power-supply sequencing. A capacitor connected to this pin sets the output voltage ramp rate during startup; a resistor divider allows tracking of another supply rail. It also discharges fully during faults to ensure consistent restart behavior after overtemperature or UVLO events.
Can the TPS54341DPRT operate with input voltages below 4.5 V?
No, the TPS54341DPRT has a minimum specified input voltage of 4.5 V per its absolute maximum and recommended operating conditions. Operation below 4.5 V may result in improper startup, unstable regulation, or failure to exit UVLO. The internal UVLO threshold is 4.3 V typical, with hysteresis ensuring clean turn-on/turn-off transitions.
TPS54341DPRT 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):
- 42V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 41V
- 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)
TPS54341DPRT FAQ
1.How can I place an order for TPS54341DPRT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS54341DPRT 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 TPS54341DPRT reliable?
The price and inventory of TPS54341DPRT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS54341DPRT is usually 5 days.
3.What payment methods are accepted for TPS54341DPRT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS54341DPRT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS54341DPRT?
TPS54341DPRT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS54341DPRT 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 TPS54341DPRT?
For technical support, including TPS54341DPRT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS54341DPRT requirements.
6.How does Aetrix verify that TPS54341DPRT is sourced from the original manufacturer or authorized distributors?
All TPS54341DPRT 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 TPS54341DPRT meets industry standards.
7.What is the process for return or replacement of TPS54341DPRT?
All TPS54341DPRT units undergo pre-shipment inspection (PSI). If there is an issue with TPS54341DPRT, 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 TPS54341DPRT part is unused and in its original packaging.
Return procedure for TPS54341DPRT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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