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Texas Instruments TPS54341DPRR
- Part No.:
- TPS54341DPRR
- Manufacturer:
- Texas Instruments
- Package:
- 10-WDFN Exposed Pad
- Datasheet:
-
TPS54341DPRR.pdf
- Description:
- IC REG BCK SPLIT RAIL ADJ 10WSON
- Quantity:
- Payment:
- Shipping:
Inventory:10,018
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Product details
Overview
TPS54341DPRR 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, adjustable 100-kHz–2.5-MHz switching frequency, and 0.8-V ±1% internal reference. It delivers regulated 3.3-V or 5-V outputs in industrial power supplies and automotive accessory systems.
For engineers reviewing the TPS54341DPRR datasheet, TPS54341DPRR pinout, TPS54341DPRR application, or TPS54341DPRR equivalent, key selection considerations include input voltage range (4.5–42 V), output current capability (3.5 A continuous), thermal performance in WSON-10 package (RθJA = 35.1°C/W), and soft-start/sequencing support via SS/TR pin.
Technical Context
The TPS54341DPRR implements constant-frequency peak-current-mode control with internal slope compensation to prevent subharmonic oscillation above 50% duty cycle. Its RT/CLK pin supports both resistor-programmed frequency (100 kHz–2.5 MHz) and external clock synchronization via PLL.
It integrates BOOT capacitor recharge FET for low-dropout operation down to ~100% duty cycle, UV/OV power-good monitoring (93–106% window), and adjustable undervoltage lockout via EN pin resistor divider. Protection includes cycle-by-cycle current limit (5.5 A typ), thermal shutdown (176°C), and overvoltage protection.
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; survives ISO 7637 load-dump pulses up to 45 V. |
| Output Current | 3.5 A continuous - Delivers full rated current with proper PCB thermal design (exposed pad soldered to ground plane). |
| Switching Frequency | 100 kHz to 2.5 MHz - Adjustable via RT resistor or external clock; enables optimization of efficiency vs. size of inductor/capacitor. |
| Quiescent Current | 152 µA (no-load, Eco-mode) - Enables battery-backed or always-on systems with minimal standby loss. |
| Reference Voltage | 0.8 V ±1% - Sets output accuracy; used with external resistor divider to configure 0.8 V to 41.1 V output range. |
| High-Side RDS(on) | 87 mΩ (typ) - Limits conduction loss at 3.5 A; contributes to >90% peak efficiency at mid-load (e.g., 12 V → 5 V @ 2 A). |
| Power-Good Window | 93% to 106% of VOUT - Open-drain PWRGD asserts low outside this band, enabling system-level fault detection and sequencing. |
Pinout & Package
TPS54341DPRR is housed in a thermally enhanced 10-pin WSON package (4.0 mm × 4.0 mm) with exposed thermal pad (GND-connected). The package requires soldering the pad to a large copper area for reliable thermal performance (RθJB = 12.3°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| BOOT | Bootstrap supply node | Connects to SW via 0.1-µF ceramic capacitor; supplies gate drive for high-side MOSFET; monitored for UVLO. |
| VIN | Main input supply | Accepts 4.5–42 V; powers internal circuitry and high-side driver; must be bypassed with ≥10-µF ceramic capacitor. |
| GND | Power and signal ground | Common return for all circuits; thermal pad must be electrically connected to PCB ground plane for thermal integrity. |
| SW | Switching node | Drain of internal high-side MOSFET; connects to external inductor; high dv/dt node requiring tight layout. |
| FB | Feedback input | Inverting input of error amplifier; senses output via resistor divider; sets regulation point (VOUT = 0.8 V × (1 + RH/RL)). |
| COMP | Error amplifier output | Connects to compensation network (R-C-RC); controls PWM comparator; sensitive to noise and layout. |
| EN | Enable / UVLO control | Pull below 1.2 V to disable; floating enables; external resistor divider adjusts startup threshold and hysteresis. |
| RT/CLK | Frequency programming | Resistor-to-ground sets fSW; external clock input when pulled above 1.55 V; PLL synchronizes switch turn-on. |
| SS/TR | Soft-start / tracking | Capacitor sets ramp time; resistor divider enables output tracking during power-up sequencing. |
| PWRGD | Power-good indicator | Open-drain output; low when VFB < 93% or > 106% nominal; 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 energy-sensitive applications. |
| Integrated BOOT recharge FET | Enables near-100% duty cycle operation without external diode; supports low dropout (e.g., 7 V → 5 V) with monotonic startup. |
| Adjustable UVLO with hysteresis | EN pin resistor divider sets custom start/stop thresholds (e.g., 9 V start / 7.5 V stop) to match system battery profile. |
| Current-mode control with slope compensation | Ensures stable operation across full duty cycle range (up to 95%) without external compensation components. |
| Open-drain PWRGD with OV/UV detection | Provides system-level fault signaling independent of enable state; supports safe power sequencing in multi-rail designs. |
Applications
| Industrial Motor Drive Power | Automotive GPS/Entertainment |
|---|---|
|
Use Scenario: Powers microcontroller, CAN transceiver, and display logic in PLC I/O modules operating from 24-V DC bus. IC Role / Device Role / Timing Role: Primary 5-V/3.5-A buck regulator; provides clean, sequenced supply with PWRGD confirmation before firmware boot. Use Value: Survives 45-V load dump per ISO 7637; Eco-mode extends uptime in sleep-mode sensor nodes. |
Use Scenario: Generates 5-V USB charging rail and 3.3-V logic supply from vehicle's 12-V battery with cold-crank tolerance. IC Role / Device Role / Timing Role: Input-stage DC-DC converter; handles wide VIN range (4.5–42 V) and enables soft-start to avoid battery sag during ignition. Use Value: Adjustable UVLO prevents brownout during cranking; PWRGD coordinates USB port enable with system readiness. |
| USB Dedicated Charging Port | 12-V/24-V Communications System |
|
Use Scenario: Implements universal car charger supporting BC1.2 DCP mode, powering smartphones and tablets from automotive 12-V source. IC Role / Device Role / Timing Role: High-efficiency 5-V/3.5-A regulator feeding USB-PD controller and port switches; SS/TR enables controlled ramp. Use Value: 87-mΩ RDS(on) sustains >92% efficiency at 2 A; RT/CLK allows EMI spread-spectrum tuning in noisy cabin environment. |
Use Scenario: Supplies 3.3-V FPGA core and 1.2-V DDR memory in industrial Ethernet gateway with dual 12-V/24-V input options. IC Role / Device Role / Timing Role: Primary intermediate bus converter; FB/SS/TR pins support precise tracking between rails during hot-plug events. Use Value: Wide fSW range (400 kHz typical) balances inductor size and efficiency; thermal shutdown protects against enclosure overheating. |
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, 0.6-A max, integrated FET; lower current rating, higher VIN max, no PWRGD. | Suitable for lower-power automotive body electronics where 3.5-A output is unnecessary. | Select LM5164QPWPRQ1 only if input exceeds 42 V or output current ≤0.6 A; not drop-in due to current and feature gap. |
| TPS54540DDAR | Same family, 5-A rating, 8-pin SO PowerPAD; higher current, larger package, identical pinout except missing SS/TR and PWRGD. | Used where higher output current is required and board space allows SO-8; lacks sequencing and power-good features. | Choose TPS54540DDAR for 5-A loads but expect redesign for missing SS/TR/PWRGD functionality and thermal layout. |
Compared with LM5164QPWPRQ1 and TPS54540DDAR, the TPS54341DPRR uniquely balances 3.5-A output, Eco-mode efficiency, PWRGD signaling, and compact WSON-10 packaging-making it optimal for space-constrained 12–24-V systems requiring robust sequencing and fault reporting.
Availability
TPS54341DPRR is available at Aetrix Electronics and suitable for industrial motor drives, automotive infotainment systems, and USB charging ports requiring stable component supply, long-term lifecycle support, and automotive-grade reliability.
Supply support for TPS54341DPRR 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 TPS543xx family targets rugged industrial and automotive DC-DC conversion, emphasizing wide input range, integrated protection, and ease of design-exemplified by the TPS54341DPRR's Eco-mode, BOOT recharge, and ISO 7637 compliance.
FAQ
What is the maximum output current capability of the TPS54341DPRR?
The TPS54341DPRR delivers up to 3.5 A of continuous output current under recommended thermal conditions-requiring proper PCB layout with the exposed thermal pad soldered to a minimum 100-mm² copper area. Peak current limit is 5.5 A (typ), but sustained operation above 3.5 A risks thermal shutdown unless ambient temperature and airflow are tightly controlled.
Does the TPS54341DPRR support synchronization to an external clock?
Yes, the TPS54341DPRR supports external clock synchronization via its RT/CLK pin. When pulled above 1.55 V, the pin becomes a high-impedance clock input synchronized by an internal PLL; falling edges trigger switch turn-on. This enables EMI reduction and multi-phase coordination without modifying the internal oscillator.
How does the Eco-mode™ function improve light-load efficiency in the TPS54341DPRR?
Eco-mode™ in the TPS54341DPRR reduces no-load quiescent current to 152 µA by entering pulse-skipping mode-disabling switching cycles when output demand falls below regulation threshold. This maintains tight output regulation while minimizing idle power loss, critical for battery-powered or always-on industrial sensors.
Can the TPS54341DPRR operate with input voltages below 4.5 V?
No-the absolute minimum input voltage for functional operation is 4.5 V per datasheet specifications. Below this, the internal UVLO prevents startup. The device's EN pin can be configured with a resistor divider to raise the effective UVLO threshold (e.g., to 6 V), but it cannot lower it below 4.3 V typical internal threshold.
What is the role of the SS/TR pin on the TPS54341DPRR?
The SS/TR pin on the TPS54341DPRR serves dual functions: soft-start (via external capacitor to control output voltage ramp time) and supply tracking (via resistor divider to align startup with another rail). It ensures controlled inrush current and coordinated power-up sequencing-essential for FPGA, processor, and multi-voltage SoC applications.
TPS54341DPRR 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)
TPS54341DPRR FAQ
1.How can I place an order for TPS54341DPRR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS54341DPRR 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 TPS54341DPRR reliable?
The price and inventory of TPS54341DPRR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS54341DPRR is usually 5 days.
3.What payment methods are accepted for TPS54341DPRR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS54341DPRR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS54341DPRR?
TPS54341DPRR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS54341DPRR 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 TPS54341DPRR?
For technical support, including TPS54341DPRR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS54341DPRR requirements.
6.How does Aetrix verify that TPS54341DPRR is sourced from the original manufacturer or authorized distributors?
All TPS54341DPRR 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 TPS54341DPRR meets industry standards.
7.What is the process for return or replacement of TPS54341DPRR?
All TPS54341DPRR units undergo pre-shipment inspection (PSI). If there is an issue with TPS54341DPRR, 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 TPS54341DPRR part is unused and in its original packaging.
Return procedure for TPS54341DPRR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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