My Inquiry
My Account
Texas Instruments TPS54218ARTER
- Part No.:
- TPS54218ARTER
- Manufacturer:
- Texas Instruments
- Package:
- 16-WFQFN Exposed Pad
- Datasheet:
-
TPS54218ARTER.pdf
- Description:
- IC REG BUCK ADJ 2A 16WQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,019
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TPS54218ARTER from Texas Instruments is a 2.95-V to 6-V input, 2-A synchronous step-down DC/DC converter with integrated 30-mΩ high- and low-side MOSFETs, 2-MHz switching frequency capability, ±1% voltage reference accuracy over –40°C to 150°C, and power-good monitoring for industrial power rails in factory automation and wireless infrastructure systems.
For engineers reviewing the TPS54218ARTER datasheet, TPS54218ARTER pinout, TPS54218ARTER application, or TPS54218ARTER equivalent, this page delivers verified pin functions, thermal-aware efficiency data at 1 MHz/1.8 V output, soft-start sequencing control, UVLO programmability via EN, and real-world PWRGD threshold behavior (93–107% VREF) - all critical for reliable 2-A point-of-load design.
Technical Context
The TPS54218ARTER implements peak-current-mode control with internal slope compensation to prevent subharmonic oscillation across 0–95% duty cycle. Its RT/CLK pin supports both resistor-programmed frequency (200 kHz–2 MHz) and external clock synchronization via PLL lock-in (14 μs typical).
It integrates boot capacitor recharge logic and BOOT-PH UVLO (2.1 V min), enabling near-100% duty-cycle operation while maintaining gate drive integrity. The COMP pin serves as error amplifier output and current comparator input, with dual transconductance modes (225 μS normal, 70 μS during soft-start) for transient-optimized loop response.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.95 V to 6 V - supports single-cell Li-ion, 3.3-V/5-V rails, and intermediate bus architectures without pre-regulation. |
| Output Current | 2 A continuous - sustained at full load with proper PCB thermal vias and 37°C/W θJA (JEDEC high-K board). |
| Switching Frequency | 200 kHz to 2 MHz - adjustable via RT resistor or external clock; enables compact 1-μH inductors at 2 MHz. |
| Voltage Reference | 0.803 V ±1% over –40°C to 150°C - ensures stable 1.2-V, 1.8-V, or 3.3-V outputs with <±12 mV total error budget. |
| Quiescent Current | 350 μA typical at no load - minimizes standby loss in always-on subsystems; drops to 2 μA in shutdown. |
| Power-Good Threshold | 93% to 107% of VREF - open-drain PWRGD asserts low outside this window, enabling safe system sequencing. |
| Thermal Protection | 175°C shutdown with 15°C hysteresis - prevents latch-up during overload; recovery requires thermal cooldown and EN toggle or VIN cycle. |
Pinout & Package
TPS54218ARTER uses a thermally enhanced 3-mm × 3-mm, 16-pin WQFN package (RTE) with exposed PowerPad for optimal junction-to-board thermal resistance (7.9°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN | Enable control input | Pull below 1.2 V to disable; internal 3.2-μA pullup allows floating-enable or resistor-divider UVLO programming. |
| PH | High-side MOSFET source / low-side MOSFET drain | Switch node connecting to external inductor; requires low-inductance layout to minimize EMI and ringing. |
| VSENSE | Inverting input of error amplifier | Feedback node for output voltage regulation; sets VOUT = 0.803 V × (1 + R1/R2) with precision resistive divider. |
| PWRGD | Open-drain power-good indicator | Asserts low if VOUT deviates >7% from target or during thermal/fault shutdown; requires external pullup to VIN or bias rail. |
| RT/CLK | Frequency configuration I/O | Accepts resistor-to-GND for 200–2000 kHz fSW or external clock (300–2000 kHz) with 75-ns minimum pulse width. |
| COMP | Error amplifier output | Drives current comparator; connects to Type II/III compensation network for loop stability across line/load transients. |
| VOUT | Regulated output voltage | Not a pin - derived at PH–inductor–capacitor node; maximum 6 V output possible with appropriate feedback divider. |
| BOOT | Bootstrap supply for high-side gate | Requires 0.1-μF X7R/X5R ceramic cap to PH; UVLO disables high-side if BOOT–PH falls below 2.1 V. |
| VIN | Main input supply | Dual VIN pins (1 & 2) reduce IR drop and improve high-current path integrity; accepts 2.95–6 V with 7-V abs max. |
| SS | Soft-start timing control | Charged by 2.07-μA current source; external capacitor sets monotonic VOUT ramp time (e.g., 10 nF → ~4.3 ms). |
| AGND | Analog ground reference | Must be tied to GND plane near device; separates noise-sensitive analog circuitry from power ground currents. |
| GND | Power ground return | Direct connection to exposed PowerPad via multiple thermal vias; forms low-impedance return for high di/dt switch currents. |
| Thermal Pad | Junction heat dissipation path | Electrically connected to GND; mandatory for thermal performance - 23.1°C/W θJB and 7.9°C/W θJC(bot). |
Key Features
| Feature | Design Value |
|---|---|
| Integrated dual MOSFETs | 30-mΩ high-side and 30-mΩ low-side (typical at 5 V) enable >90% efficiency at 2 A/1.8 V/1 MHz without external switches. |
| Programmable soft start | 2.07-μA SS charge current with 98% VREF crossover ensures controlled inrush limiting and repeatable restart after fault conditions. |
| Synchronization capability | RT/CLK pin includes PLL with 14-μs lock time, allowing precise alignment to system clocks for EMI reduction in multi-rail designs. |
| Pre-biased output startup | Safe start into precharged output avoids reverse current flow - critical for FPGA/CPU core rails with large bulk capacitance. |
| Overvoltage protection | 109% VOUT overvoltage comparator forces high-side off until VOUT falls below 105%, preventing damage to downstream loads. |
| Frequency foldback | Reduces fSW during overcurrent or startup to limit peak inductor current and maintain control loop stability under stress. |
Applications
| Factory Automation PLC Power | Broadband Fixed-Line Access |
|---|---|
|
Use Scenario: Powering FPGA I/O banks and microcontroller peripherals in modular PLC backplanes with tight thermal constraints. IC Role / Device Role / Timing Role: Primary 1.8-V/2-A point-of-load regulator delivering stable rail with fast transient response to logic switching events. Use Value: Integrated MOSFETs and 2-MHz capability shrink solution size by 40% vs. discrete controllers; PWRGD enables safe firmware-controlled power sequencing. |
Use Scenario: Generating clean 3.3-V supply for DSLAM line cards operating in uncontrolled ambient environments (–40°C to +85°C). IC Role / Device Role / Timing Role: Synchronous buck converter regulating from 5-V intermediate bus with minimal external components and robust thermal margin. Use Value: ±1% VREF and –40°C to 150°C TJ rating ensure output stability across temperature; frequency foldback prevents latch-up during line surge events. |
| Wireless Infrastructure Remote Radio Unit | Industrial IoT Edge Sensor Hub |
|
Use Scenario: Supplying 1.2-V core voltage to RF transceivers in outdoor small-cell base stations with limited airflow. IC Role / Device Role / Timing Role: High-efficiency 2-A buck converter with thermal shutdown and accurate PWRGD for remote fault reporting. Use Value: 7.9°C/W θJC(bot) and exposed PowerPad enable >1.5 W dissipation on 2-layer boards; EN pin allows deep-sleep mode control. |
Use Scenario: Powering ultra-low-power MCU, BLE radio, and analog sensor front-end in battery-backed edge nodes. IC Role / Device Role / Timing Role: Main system regulator supporting dynamic voltage scaling and low-quiescent-current sleep states. Use Value: 2-μA shutdown current extends battery life; soft-start prevents brownout during wake-up; SS discharge ensures deterministic restart after thermal fault. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS54228RTET | Same 2-A rating and WQFN-16 package, but adds D-CAP2 control and 4.5-V to 18-V input range; lacks RT/CLK synchronization. | Better suited for higher-input industrial rails (e.g., 12-V bus); not drop-in for 5-V-only systems due to higher UVLO. | Select TPS54228RTET only when input exceeds 6 V or D-CAP2's zero-external-compensation benefit is required. |
| MP2315DJ-LF-Z | 2-A, 4.5–28-V input, 500-kHz fixed fSW, no RT/CLK or PWRGD; 110-mΩ MOSFETs yield lower efficiency at 2 A. | Targeted at cost-sensitive, non-critical 12-V automotive or industrial supplies where sequencing and sync are unnecessary. | Choose MP2315DJ-LF-Z only for simple 12-V-to-3.3-V conversion with relaxed efficiency and feature requirements. |
Compared with TPS54228RTET and MP2315DJ-LF-Z, the TPS54218ARTER uniquely balances wide-frequency adjustability, precise power-good signaling, and low-input-voltage support - making it optimal for space-constrained, thermally demanding 2-A loads below 6 V.
Availability
TPS54218ARTER is available at Aetrix Electronics and suitable for factory automation PLCs, broadband access line cards, wireless infrastructure remote radio units, and industrial IoT sensor hubs requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for TPS54218ARTER 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 TPS54218ARTER belongs to TI's SWIFT™ synchronous buck converter product line, engineered for compact, high-efficiency point-of-load regulation in thermally constrained industrial and communications equipment.
FAQ
What is the absolute maximum input voltage rating for the TPS54218ARTER?
The TPS54218ARTER has an absolute maximum input voltage rating of 7 V on VIN, EN, and PWRGD pins. Exceeding this value risks permanent damage. The recommended operating range remains 2.95 V to 6 V. Always observe the 7-V limit during hot-plug, load-dump, or transient events - use clamping or filtering if system-level surges exceed 6 V.
How does the TPS54218ARTER handle startup into a pre-biased output?
The TPS54218ARTER supports safe startup into a pre-biased output by disabling the low-side MOSFET until the high-side switch begins switching, preventing reverse current flow. This behavior is inherent to its current-mode architecture and requires no external circuitry. It ensures reliable power-up of FPGA or ASIC rails with large hold-up capacitors already charged to nominal voltage.
Can the TPS54218ARTER synchronize to an external clock, and what are the timing requirements?
Yes, the TPS54218ARTER synchronizes to an external clock via the RT/CLK pin with a PLL lock-in time of 14 μs (typical). Input clock must be 300–2000 kHz, have ≥75 ns minimum pulse width, and meet VIH ≥1.6 V and VIL ≤0.6 V thresholds. The device aligns PH rising edge to the falling edge of the external clock, reducing beat frequencies in multi-converter systems.
What is the purpose of the AGND pin on the TPS54218ARTER, and how should it be routed?
The AGND pin on the TPS54218ARTER provides a dedicated analog ground reference for the error amplifier and sensing circuitry. It must be connected directly to the main GND plane near the device using short, low-inductance traces - never daisy-chained. Separating AGND from noisy power ground paths improves regulation accuracy and noise immunity, especially critical for <±1% VREF performance across temperature.
Does the TPS54218ARTER provide overvoltage protection, and how does it operate?
Yes, the TPS54218ARTER includes overvoltage protection: when VOUT exceeds 109% of nominal, the high-side MOSFET is immediately disabled and held off until VOUT falls below 105%. This action is independent of PWRGD and occurs within one switching cycle. It protects downstream logic from damage during feedback divider failure or sudden load removal.
TPS54218ARTER Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- SWIFT™
- Package/Case:
- 16-WFQFN Exposed Pad
- Packaging:
- Bulk
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.95V
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 0.803V
- Voltage - Output (Max):
- 6V
- Current - Output:
- 2A
- Frequency - Switching:
- 200kHz ~ 2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-WQFN (3x3)
TPS54218ARTER FAQ
1.How can I place an order for TPS54218ARTER through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS54218ARTER 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 TPS54218ARTER reliable?
The price and inventory of TPS54218ARTER are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS54218ARTER is usually 5 days.
3.What payment methods are accepted for TPS54218ARTER?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS54218ARTER transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS54218ARTER?
TPS54218ARTER orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS54218ARTER 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 TPS54218ARTER?
For technical support, including TPS54218ARTER datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS54218ARTER requirements.
6.How does Aetrix verify that TPS54218ARTER is sourced from the original manufacturer or authorized distributors?
All TPS54218ARTER 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 TPS54218ARTER meets industry standards.
7.What is the process for return or replacement of TPS54218ARTER?
All TPS54218ARTER units undergo pre-shipment inspection (PSI). If there is an issue with TPS54218ARTER, 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 TPS54218ARTER part is unused and in its original packaging.
Return procedure for TPS54218ARTER:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPS54218ARTER 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…
