EN
  • EN
  • DE
loading
Mfr. Part No. Qty. Price

No items in the cart

View Cart
Same model may have multiple batches, images only for reference.
RT6543AGQW Real Image
Same model may have multiple batches, images only for reference.

RT6543AGQW

Part No RT6543AGQW
Manufacturer Richtek USA Inc.
Catalog PMIC - Voltage Regulators - DC DC Switching Controllers
Description IC REG CTRLR BUCK PWM WQFN-20  /  Buck Regulator Positive Output Step-Down DC-DC Controller IC 20-WQFN (3x3)
Datasheet
RT6543AGQW Datasheet
Sample
Rohs State rohs
ECAD Module
Need Help

Products specifications Report Issue?

Category Integrated Circuits (ICs)>PMIC - Voltage Regulators - DC DC Switching Controllers
Mfr Richtek USA Inc.
Package Tape & Reel
Output Type Transistor Driver
Function Step-Down
Output Configuration Positive
Topology Buck
Number of Outputs 1
Output Phases 1
Supply Voltage - Operating 3V ~ 24V
Frequency - Switching 400kHz, 600kHz, 800kHz
Synchronous Rectifier Yes
Clock Sync No
Control Features Current Limit, Dead Time Control, Enable, Frequency Control, Phase Control, Power Good, Soft Start
Temperature Range - Operating -40°C ~ 125°C (TJ)
Mounting SMD (SMT)
Package / Case 20-WFQFN Exposed Pad
Supplier Device Package 20-WQFN (3x3)
MSL Level 3 (168 Hours)
REACH Status REACH Unaffected
ECCN EAR99
HTSUS 8542.39.0001
Other Names 1028-RT6543AGQWTR,1028-RT6543AGQWDKR,1028-RT6543AGQWCT
Standard Package 3,000
Win Source Part Number 963492-RT6543AGQW
Ultra Librarian 3D Model Ultra Librarian RT6543AGQW CAD Model

Description

The Richtek USA Inc. 963492-RT6543AGQW integrated circuit is a buck step-down voltage regulator with a transistor driver output type.

  • Output Type: Transistor Driver
  • Package: Tape and reel
  • Standard Package Size: 3,000
  • Rectifier: Synchronous
  • Control Features: Current limit, dead time control, enable, frequency control, phase control, power good, and soft start control features
  • Output Configuration: Single
  • Output: Positive
  • Switching Frequency: 400kHz, 600kHz, and 800kHz
  • Output Phase: 1
  • Mounting: 20-WFQFN exposed pad
  • MSL Level: 3 (168 hours)
  • HTSUS: 8542.39.0001
  • Operating Temperature Range: -40°C to 125°C
  • Supply Voltage Range: 3V to 24V

You May Also Be Interested in

MAX5066AUI+ Maxim Integrated – Price, Stock & Datasheet
MAX5066AUI+
Maxim Integrated
IC REG CTRLR BUCK 28TSSOP
Need more? Email Us
Picture of TPS40211DRCRG4
TPS40211DRCRG4
Texas Instruments
Need more? Email Us
Picture of LT8228EFE#TRPBF
LT8228EFE#TRPBF
Analog Devices Inc.
SWITCHING VOLTAGE REGULATORS 100
Lowest to $6.1790
Picture of LM5036RJBT
LM5036RJBT
Texas Instruments
HALF-BRIDGE PWM CONTROLLER WITH
Lowest to $4.7872
Picture of BD9611MUV-RE2
BD9611MUV-RE2
Rohm Semiconductor
IC REG CTRLR BUCK 20VQFN
Lowest to $1.5927
Picture of LM5121QMHX/NOPB
LM5121QMHX/NOPB
Texas Instruments
SYNCHRONOUS BOOST CONTROLLER
Need more? Email Us
MCP19124-E/MJ Microchip Technology – Price, Stock & Datasheet
MCP19124-E/MJ
Microchip Technology
DIGITALLY ENHANCED POWER, VOLTAG
Lowest to $11.0598
Picture of LT3741EUF-1#TRPBF
LT3741EUF-1#TRPBF
Analog Devices Inc.
IC REG CTRLR BUCK 20QFN
Lowest to $16.7142
MP9928GF-Z Monolithic Power Systems Inc. – Price, Stock & Datasheet
MP9928GF-Z
Monolithic Power Systems Inc.
4V-60V INPUT, CURRENT MODE, SYNC
Lowest to $3.1433

Top Sellers

SSD1963QL9 real image6483
SSD1963QL9
Solomon
LCD Display Controller 128-Pin LQFP Tray
Lowest to $7.4300
ICM-42605 real image24295
ICM-42605
TDK InvenSense
IMU ACCEL/GYRO/TEMP I2C/SPI LGA
Lowest to $10.4542
EPM3128ATC100-10N real image
EPM3128ATC100-10N
Altera
IC CPLD 128MC 10NS 100TQFP
Lowest to $3.3015
BME280 Real Image
BME280
Bosch Sensortec
SENSOR PRESSURE HUMIDITY TEMP
Lowest to $3.9204
AR8033-AL1A real image2016
AR8033-AL1A
Atheros
Ethernet TXRX Single Chip 1-Port 3.3V 10Mbps/100Mbps/1000Mbps 48-Pin QFN EP Tray
Lowest to $2.6071
BMI088 real image23913
BMI088
Bosch Sensortec
ACCELEROMETER 16LGA / Accelerometer, Gyroscope, 6 Axis Sensor I2C, SPI Output
Lowest to $11.8797
LM5069MM-2/NOPB real image1604
LM5069MM-2/NOPB
Texas Instruments
IC CTRLR HOT SWAP 48V 10-MSOP
Lowest to $4.1579
BMI160 real image
BMI160
Bosch Sensortec
IMU ACCEL/GYRO I2C/SPI 14LGA / Accelerometer, Gyroscope, 6 Axis Sensor I2C, SPI Output
Lowest to $3.6828
PI3740-00-LGIZ real image
PI3740-00-LGIZ
Vicor Corporation
DC DC CONVERTER 10-50V / 8V – 60VIN , 10V – 50VOUT , 50 – 140W Cool-Power ZVS Buck-Boost Regulator
Lowest to $41.3948
FT230XQ-R real image21397
FT230XQ-R
FTDI, Future Technology Devices International Ltd
IC USB SERIAL BASIC UART 16QFN
Lowest to $5.9399
FT232RL-REEL Real Image
FT232RL-REEL
FTDI, Future Technology Devices International Ltd
IC USB FS SERIAL UART 28-SSOP
Lowest to $5.2271
BAS516 Real Image
BAS516
Nexperia USA Inc.
DIODE GEN PURP 100V 250MA SOD523
Lowest to $0.0357
74HC595D,118 label picture
74HC595D,118
Nexperia USA Inc.
Counter Shift Registers 8-bit serial-in, serial or parallel-out shift register with output latches; 3 - state
Lowest to $0.1046
EC2-5NU real image3736
EC2-5NU
Kemet
RELAY GEN PURPOSE DPDT 2A 5V
Lowest to $0.9677
ICM-42688-P Real Image2
ICM-42688-P
TDK InvenSense
MOTION SENSOR / Accelerometer, Gyroscope, 6 Axis Sensor Output
Lowest to $17.8196

Pricing & Ordering

Quantity Unit Price Ext. Price
100+ $0.5078 $50.7800
240+ $0.4167 $100.0080
375+ $0.4036 $151.3500
515+ $0.3906 $201.1590
665+ $0.3776 $251.1040
890+ $0.3385 $301.2650
* Prices exclude shipping and taxes. Shipping costs are calculated at checkout.
Estimate Shipping
Enter your destination to get a shipping estimate
*
Availability: 20,000 pieces
MOQ: 100 pcs
Order Increment : 1 pcs
*Need More Quantity? *Request a Bulk Quantity Quotation?
Ordering Guidelines

Shipping Information

Shipped from HK warehouse
Expected Shipping Date
Ship today if order in (HKT)
Supplier Lead-Time Call for availability
Estimate shipping fee
Enter your destination to get a shipping estimate
Estimate Shipping Fee

Contact Us

*
*
*

FRAUD PREVENTION REMINDERS

Recently, We have discovered that criminals falsely claimed to be WIN SOURCE to commit fraud. Please note that the only official website & email suffix are win-source.group, win-source.net, winsourcectl.com and winsourceelec.com

More details about fraud prevention
About Us
Customer Service
Solutions
Copyright © 2026 WIN SOURCE. All rights reserved.
For detailed contact information and office addresses in our key locations, including Irvine, Munich, Toronto, Singapore, Seoul, Bangalore, Bologna, Yamanashi, Hong Kong, and Mainland China, please visit our website.
Trust Guard Security Scanned
RFQ RFQ RFQ BOM BOM BOM API API API Sell Sell Sell your Excess