TPS543620RPYR Texas Instruments Integrated Circuit (Other) In Stock
Texas Instruments TPS543620RPYR is a current-mode PWM synchronous buck regulator accepting 4 V to 18 V input in a compact QFN-14 package. Designed for 12 V nominal bus conversion with high efficiency across load. Available from stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Other
- Pin Count
- 20
- Lifecycle
- ACTIVE
- Datasheet
- TPS543620RPYR Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $1.6378(MOQ 1)
- Temp Range
- -40.0°C to 150.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Current-mode PWM control with 4 V to 18 V input range and 12 V nominal bus compatibility for telecom and industrial rails
- Synchronous rectification architecture minimising external component count and improving efficiency across light and full loads
- Compact QFN-14 package enabling high power density layouts on space-constrained server and communications boards
- Introduced in 2020 with 15-year estimated product lifetime providing long supply chain stability for industrial designs
Applications
The TPS543620RPYR is tailored for 12 V bus point-of-load regulation in server power delivery networks, networking switches, and industrial automation controllers where high efficiency and compact size are critical. Its 4 V to 18 V input range accommodates both 12 V and 5 V intermediate bus architectures, making it versatile for telecom infrastructure, storage systems, and motor-drive auxiliary supplies. The current-mode PWM control loop provides fast transient response for powering FPGAs, ASICs, and DSPs with rapidly changing load currents.
Specifications
| Pbfree Code | Yes |
| Date Of Intro | 2020-09-20 |
| YTEOL | 15 |
| Analog IC - Other Type | SWITCHING REGULATOR |
| Control Mode | CURRENT-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 18V |
| Input Voltage-Min | 4V |
| Input Voltage-Nom | 12V |
| JESD-30 Code | R-PQCC-N14 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Output Current-Max | 6A |
| Output Voltage-Max | 7V |
| Output Voltage-Min | 0.5V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | LCC14(UNSPEC) |
| Package Shape | RECTANGULAR |
| Package Style | CHIP CARRIER, VERY THIN PROFILE |
| Peak Reflow Temperature (Cel) | 260 |
| Supply Current-Max (Isup) | 1.6mA |
| Supply Voltage-Nom (Vsup) | 12V |
| Surface Mount | YES |
| Switcher Configuration | BUCK |
| Switching Frequency-Max | 2200kHz |
| Technology | BICMOS |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Tin (Sn) |
| Terminal Form | NO LEAD |
| Terminal Pitch | 0.5mm |
| Terminal Position | QUAD |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 2 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the input voltage range of TPS543620RPYR, and which bus architectures does it support?
The TPS543620RPYR accepts an input voltage from 4 V to 18 V with a nominal operating point of 12 V, making it directly compatible with both 12 V intermediate bus and 5 V bus architectures commonly used in server, networking, and industrial power systems. The wide input range also accommodates input voltage droop during load transients without losing regulation, which is important in high-current server blade power rails where bus impedance can cause several hundred mV of transient drop.
How does current-mode PWM control in TPS543620RPYR improve transient response compared to voltage-mode control?
Current-mode PWM control in the TPS543620RPYR adds an inner current feedback loop that responds to inductor current changes within a single switching cycle, typically 1 µs to 5 µs. This inner loop automatically limits peak current during load steps and reduces output voltage undershoot compared to voltage-mode converters, which must wait for the slower outer voltage loop to correct. In FPGA and processor core power delivery, this faster response reduces the required output capacitance by 30–50% for equivalent voltage droop specification.
What package does TPS543620RPYR use, and how does it affect thermal management in a dense PCB layout?
The TPS543620RPYR is housed in a 14-pin QFN package with an exposed thermal pad on the bottom, providing a low thermal resistance path to the PCB copper. The exposed pad must be soldered to a copper pour connected to multiple thermal vias to achieve the rated junction-to-board thermal resistance, typically around 20 °C/W to 30 °C/W with proper layout. For power levels up to 20 W, this allows operation in 55 °C ambient environments without a heatsink, suitable for enclosed industrial enclosures.
What is the estimated product longevity of TPS543620RPYR, and why does this matter for industrial procurement?
Texas Instruments projects a 15-year estimated product lifetime (YTEOL) for the TPS543620RPYR, which was introduced in September 2020. Industrial equipment designers often need 10–15 years of guaranteed component availability to support product service and repair obligations, making this long lifecycle rating a key procurement criterion. It reduces the risk of costly PCB redesigns or last-time-buy events that disrupt production schedules for equipment such as PLCs, medical devices, and infrastructure routers.
For a 12 V to 1.0 V point-of-load rail supplying a 20 A FPGA core, how does TPS543620RPYR's synchronous rectification benefit efficiency?
Synchronous rectification replaces the catch diode with a low-resistance MOSFET, eliminating the 0.3 V to 0.7 V forward-voltage drop that would otherwise dissipate 6 W to 14 W at 20 A in a non-synchronous design. At a 1.0 V output from 12 V input (duty cycle ≈ 8%), the synchronous low-side FET conducts for about 92% of each cycle, so its on-resistance (typically a few milliohms) becomes the dominant conduction loss rather than diode forward voltage. This improvement typically raises conversion efficiency from around 85% to above 92% at full load.
Related Guides
How to Choose a 3528 SMD Indicator LED for Blue Status Lighting: Selection Guide
A practical 3528 SMD indicator LED selection guide using 150141BS73100 and related Wurth 150141 variants for blue status lighting.
Jul 5, 2026
BAS70KFILM Design Guide for Low-Leakage Signal Clamping and RF Detector Inputs
Practical BAS70KFILM design guidance for signal clamps, RF detector inputs, leakage control, capacitance, layout, and sourcing alternatives.
Jul 5, 2026
How to Choose a BAS70 Schottky Diode for Signal Clamping: Selection Guide
A practical BAS70KFILM and BAS70-family Schottky diode selection guide for signal clamping, RF detection, leakage, and topology choices.
Jul 4, 2026
AMC1202DWVR Design Guide for Isolated Current Sensing
Practical AMC1202DWVR design guide covering shunt sizing, isolation layout, input filtering, ADC scaling, and sourcing choices.
Jul 4, 2026
Why Buy from FindMyChip
About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $2.7000 | $2.70 |
| 10+ | $2.0250 | $20.25 |
| 35+ | $1.6740 | $58.59 |
| 3000+ | $1.6690 | $5007.00 |
| 6000+ | $1.6378 | $9826.74 |
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“Response time is incredible — usually under 4 hours. They understand that production lines can't wait.”