For Reference Only
| Part Number | RT6543AGQW |
| Manufacturer | Richtek USA Inc. |
| Category | Integrated Circuits (ICs) › DC DC Switching Controllers |
| Description | IC REG CTRLR BUCK PWM WQFN-20 |
| Lifecycle | Active |
| RoHS | No RoHS Information |
| EDA/CAD Models | RT6543AGQW PCB Footprint and Symbol |
| Warehouses | USA, Europe, China, Hong Kong SAR |
| Estimated Delivery | Dec 10 - Dec 14 2025(Choose Expedited Shipping) |
| Warranty | Up to 1 year [Limited-Warranty]* |
| Payment | 
|
| Shipping |  |
| Part Number: | RT6543AGQW |
| Brand: | Richtek USA Inc. |
| Lifecycle: | Active |
| RoHS: | Lead free / RoHS Compliant |
| Category: | Integrated Circuits (ICs) |
| Subcategory: | DC DC Switching Controllers |
| Manufacturer: | Richtek USA Inc. |
| Product Status: | Active |
| Output Type: | Transistor Driver |
| Function: | Step-Down |
| Output Configuration: | Positive |
| Topology: | Buck |
| Number of Outputs: | 1 |
| Output Phases: | 1 |
| Voltage - Supply (Vcc/Vdd): | 3V ~ 24V |
| Frequency - Switching: | 400kHz, 600kHz, 800kHz |
| Duty Cycle (Max): | - |
| Synchronous Rectifier: | Yes |
| Clock Sync: | No |
| Serial Interfaces: | - |
| Control Features: | Current Limit, Dead Time Control, Enable, Frequency Control, Phase Control, Power Good, Soft Start |
| Operating Temperature: | -40°C ~ 125°C (TJ) |
| Mounting Type: | Surface Mount |
| Package / Case: | 20-WFQFN Exposed Pad |
| Supplier Device Package: | 20-WQFN (3x3) |
 |
LTC3838IUHF#PBF | IC REG CTRLR BUCK 38QFN | 17440 More on Order |
 |
LM25085MM/NOPB | IC REG CTRLR BUCK 8VSSOP | 39782 More on Order |
 |
ISL6551IBZ | DUAL SWITCHING CONTROLLER | 7751 More on Order |
 |
LT8705AEFE#TRPBF | IC REG CTRLR BUCK-BOOST 38TSSOP | 7709 More on Order |
 |
MAX8525EEI | PWM CONTROLLER | 36011 More on Order |
 |
R1225N602C-TR-FE | 18.5V INPUT PWM/VFM STEP-DOWN DC | 63001 More on Order |
 |
UC3867DWTR | IC REG CTRLR MULT TOP 16SOIC | 36765 More on Order |
 |
ISL8845AMUZ-T | IC REG CTRLR BOOST/FLYBACK 8MSOP | 57476 More on Order |
 |
S-8333ABGB-T8T1G | IC REG CTRLR BOOST 8TSSOP | 90378 More on Order |
 |
LTC3855EUJ#PBF | IC REG CTRLR BUCK 40QFN | 12220 More on Order |
 |
S-8337ABFA-P8T1G | IC REG CTRLR BOOST 8SON | 49076 More on Order |
 |
TPS53015DGSR | IC REG CTRLR BUCK 10MSOP | 41989 More on Order |
| In Stock | 82271 pieces - More on Order |
|---|---|
| Quote Limit | No Limit |
| Lead-Time | To be Confirmed |
| Minimum | 1 |
Warm Tips: Please fill out the form below. We will contact you as soon as possible.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1 | $0.89000 | $0.89 |
Due to the impact of the COVID-19,the above prices have not been updated, please resend the inquiry to us, thank you for your understanding
Please feel free to contact us for details.
