BOM
  • BOM
  • Email
  • LinkedIn
  • Teams
  • WhatsApp

RFQ List

0 Products

Use the + button to add products to your RFQ list.

SUBMIT NOW
  • Home
  • RFQ/EI
  • Products
  • Categories
  • Manufacturers
  • Tools
  • Blog
  • About Us
  • Contact Us

Company

  • About Us
  • Five Strengths
  • Quality Control
  • Certifications
  • Contact Us

Services

  • RFQ
  • EI
  • BOM
  • Solutions
  • Tools

Resources

  • Categories
  • Products
  • Manufacturers
  • Blog
  • News and Events

Legal

  • Privacy Policies
  • Terms of Sale
  • Cookies, Ads & Emails
  • Payment Policy
  • Shipping & Delivery
  • Refund & Return Policy

Contact

[email protected]

Get the latest tech insights

© 2026 YG GROUP. All rights reserved.

  1. Home
  2. /Products
  3. /Integrated Circuits - ICs
  4. /Power Management ICs
  5. /TPS543421RQFR
TPS543421RQFR thumbnail 1
Texas Instruments

TPS543421RQFR

Category
Power Management ICs
Manufacturer
Texas InstrumentsDetails
RoHS Status
Datasheet
Description
3.8V to 18V Input, 4A, 200kHz to 2.2MHz synchronous buck converter
Similar Products
—
Quality Control
Authentic & Traceable
Shipping (In-stock)
1-3 business days
Quote Response
Within 24 Hours
Stock Status5870
QuantityTPS543421RQFR
Country

Get Tiered Pricing (Submit RFQ)

Specification
Product Details
Documentation
TypeDescriptionTypeDescription
RatingCatalogTopologyBuck
Iout (max) (A)4Vin (max) (V)18
Vin (min) (V)3.8Vout (max) (V)17.64
Vout (min) (V)0.6FeaturesAdjustable soft start, Adjustable switching frequency, Enable, External Sync, Light Load Efficiency, Low Quiescent Current, Phase Interleaving, UVLO adjustable
Control modecurrent modeSwitching frequency (min) (kHz)200
Switching frequency (max) (kHz)2200Operating temperature range (°C)-40 to 150
Iq (typ) (µA)28Duty cycle (max) (%)98
TypeConverterPackageVQFN-HR (RQF)
Pins9Size3 mm² 2 x 1.5
REACH StatusYesRoHS StatusRoHS Compliant
Certified Quality & Compliance
Purchase & Inquiry
Secure Packaging
Shipping & Availability
Payment

YG GROUP supports reliable sourcing through quality controls and compliance documentation. Please confirm product requirements, applicable certifications and supporting documents before ordering.

  • 1. Certification Scope: Quality certifications apply only to the entities, sites and activities listed in valid certificates. Management system certification does not certify each individual product.
  • 2. Product Authenticity: Products must match the agreed manufacturer, part number and condition. Supplier screening and authenticity checks help reduce counterfeit risk.
  • 3. Inspection & Testing: The inspection scope follows product risks and agreed requirements. Additional testing, laboratory arrangements, costs and lead times require written confirmation.
  • 4. Traceability & Documentation: Request conformity certificates, traceability records or test reports before ordering. Document availability, issuer and coverage must be confirmed for the offered goods.
  • 5. Environmental Compliance: RoHS and REACH information is based on applicable manufacturer documentation. Confirm the exact part, declaration date and relevant exemptions before ordering.
  • 6. Handling & Protection: Handling, storage and packaging follow applicable product requirements, including ESD and moisture protection where required. Special handling requirements must be agreed before ordering.
ERAI

Loading related products…

Product FAQ
Purchasing FAQ

What type of component is TPS543421RQFR, and what package does it use?

TPS543421RQFR is an authentic electronic component manufactured by Texas Instruments, categorized under Power Management ICs. It is supplied in the standard VQFN-HR (RQF) package footprint, providing industry-standard mechanical dimensions and terminal configurations for board-level assembly. Full pinout configurations, physical footprint drawings, and rated operating tolerances are documented in the official TPS543421RQFR datasheet above.

Why is pricing for TPS543421RQFR available via RFQ rather than a fixed checkout price?

Electronic component spot-market pricing for TPS543421RQFR fluctuates based on real-time global availability, production date codes, minimum order quantities (MOQ), and packaging formats (e.g., Reel, Tube, Tray). Using an RFQ ensures you receive accurate, real-time volume pricing tied to verified, traceable inventory rather than stale catalog estimates.

How quickly can TPS543421RQFR be shipped once quoted?

Lead times for TPS543421RQFR depend on whether stock is dispatched from our central hub or regional franchise partners. Ready-to-ship inventory typically leaves the warehouse within 1–3 business days following quality inspection, while factory-direct or back-ordered allocations are confirmed with an estimated ship date upon RFQ reply.

Loading articles…

ISO 9001
ESD Control
Texas Instruments
10 similar parts

Loading related products…

Similar products
Hot products
PicturePart NumberManufacturerPDF / RoHSStockAction
TPS259474ARPWR
TPS259474ARPWR
Texas Instruments
PDF
6,690
RFQ
TPS51727RHAT
TPS51727RHAT
Texas Instruments
PDF
5,590
RFQ
LM5022QDGSTQ1
LM5022QDGSTQ1
Texas Instruments
PDF
7,030
RFQ
TPS53830RWZT
TPS53830RWZT
Texas Instruments
PDF
4,930
RFQ
TPS62150RGTR
TPS62150RGTR
Texas Instruments
PDF
6,830
RFQ
LM22670MR-ADJ/NOPB
LM22670MR-ADJ/NOPB
Texas Instruments
PDF
3,710
RFQ
TPS2062A
TPS2062A
Texas Instruments
PDF-
9,410
RFQ
LMG3100R044
LMG3100R044
Texas Instruments
PDF-
3,240
RFQ
ATL432
ATL432
Texas Instruments
PDF-
3,940
RFQ
UCD90120ARGCR
UCD90120ARGCR
Texas Instruments
PDF
4,460
RFQ

Loading articles…

New Blog

LSM6DSV16XTR for Robot Motion Sensing: Range, FIFO and Timing Checks

Assess LSM6DSV16XTR for robot motion sensing with conditional noise and current figures, OIS range restrictions, FIFO transport calculations and sample-age checks. Compare four related ST sensors without assuming certification or production adoption.

Read more →

BTS5030-2EKA for 12V Body Loads: Heat, Inrush and Current Diagnosis

Evaluate BTS5030-2EKA for two 12V body-load branches. Review shared thermal loss, lamp inrush, multiplexed diagnosis and the revised 2185 sense ratio without confusing EV forecasts with exact-part demand.

Read more →

TLC555CDR Supply: Fab Expansion, Timer Fit and Ordering Decisions

Assess what TI's fab expansion means for a TLC555CDR design. Compare exact ordering status, timer behavior and RC tolerance before changing an approved BOM or relying on a delivery promise.

Read more →

DG411AK/883 Supply Qualification and Analog Circuit Tradeoffs

Evaluate a DG411AK/883 offer against the circuit it must serve. Compare temperature-dependent leakage, switching behavior, package identity and four nearby models before choosing replenishment or a redesign.

Read more →
  • All Categories
  • Discrete Semiconductors
  • Embedded Processors & Controllers
  • Integrated Circuits - ICs
  • Memory ICs
  • Wireless & RF Semiconductors
  • Circuit Protection
  • Connectors
  • Electromechanical
  • Embedded Solutions
  • Optoelectronics
  • Passive Components
  • Power
  • Sensors
  • Wire & Cable
  • Tools & Supplies
  • Uncategorized
  • All Categories
  • Active Filter
  • Amplifier ICs
  • Audio ICs
  • Chipsets
  • Clock & Timer ICs
  • Communication & Networking ICs
  • Counter ICs
  • Data Converter ICs
  • Digital Potentiometer ICs
  • Driver ICs
  • Equalizers
  • Interface ICs
  • Logic ICs
  • Multimedia ICs
  • Optocouplers / Photocouplers
  • Power Management ICs
  • Programmable Logic ICs
  • Security ICs / Authentication ICs
  • Switch ICs