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Product attributes Property Value
Manufacturer Reed Semiconductor Corp.
Product Series
Packaging Cut Tape (CT) |
Function Step-Down
Output Configuration Positive
Topology Buck
Output Type Adjustable
Number of Outputs 1
Voltage - Input (Min) 2.85V
Voltage - Input (Max) 16V
Voltage - Output (Min/Fixed) 0.6V
Voltage - Output (Max) 5.5V
Current - Output 20A
Frequency - Switching 600kHz, 800kHz, 1MHz ~ 2.2MHz
Synchronous Rectifier Yes
Operating Temperature -40°C ~ 125°C
Grade -
Qualification -
Mounting Type Surface Mount
Package / Case 21-QFN
Supplier Device Package 21-QFN (3x4)
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The RS53319LR from Reed Semiconductor is a high-current synchronous buck converter designed for demanding power delivery applications. It accepts inputs from 2.85V to 16V and provides an adjustable output from 0.6V to 5.5V, with a continuous current rating of 20A. The device features programmable switching frequencies of 600kHz, 800kHz, or 1MHz to 2.2MHz, allowing designers to balance efficiency and component size. Housed in a compact 21-QFN package, it is suitable for space-constrained industrial, telecom, and computing systems.

  • High Current Density: 20A output in a 21-QFN package reduces board space for high-power applications.
  • Flexible Frequency Selection: Multiple switching frequency options allow optimization for efficiency or EMI.
  • Wide Input Range: 2.85V to 16V input supports 5V and 12V bus architectures.
  • Low Output Voltage: 0.6V reference enables powering advanced low-voltage digital loads.

High-Current FPGA/ASIC Power

The 20A output capability and 0.6V minimum output make it ideal for powering high-performance FPGAs, GPUs, and ASICs that require low-voltage, high-current rails with tight regulation.

Telecom and Networking Equipment

With a 16V maximum input, it can operate from 12V intermediate bus rails in telecom switches, routers, and base stations, delivering efficient point-of-load conversion for line cards.

Industrial Robotics and Automation

The wide 2.85V-16V input range accommodates 5V and 12V industrial supply rails. High current supports servo drives, motor controllers, and PLC I/O modules.

Automotive Infotainment

Operating from 12V automotive batteries (with transients up to 16V), it provides stable power for infotainment processors, ADAS compute modules, and camera systems.

Data Center Servers

For server motherboards, the RS53319LR converts 12V to core voltages for CPUs and memory, with high efficiency and selectable frequency to optimize for EMI or efficiency.

Battery-Powered High-Performance Devices

In 2-4 cell Li-ion battery systems (7.2V-16V), it efficiently steps down to 5V or lower for high-drain portable equipment like power tools and medical devices.

Q: What type of converter is the RS53319LR?
A: It is a step-down (Buck) DC-DC converter.
Q: What is the input voltage range?
A: The input voltage range is from 2.85V to 16V.
Q: What is the maximum output current?
A: It can deliver up to 20A of continuous output current.
Q: What switching frequencies are supported?
A: It supports 600kHz, 800kHz, and 1MHz to 2.2MHz configurations.
Q: What package does it come in?
A: It is available in a 21-QFN package.
Q: What is the output voltage range?
A: The output is adjustable from 0.6V to 5.5V.
Base Product Number : RS53319LR
2.85V-16V 20A 21-QFN 600kHz-2.2MHz Buck DC-DC Converter FPGA Power Industrial Reed Semiconductor Telecom
Q: What type of converter is the RS53319LR?
A: It is a step-down (Buck) DC-DC converter.
Q: What is the input voltage range?
A: The input voltage range is from 2.85V to 16V.
Q: What is the maximum output current?
A: It can deliver up to 20A of continuous output current.
Q: What switching frequencies are supported?
A: It supports 600kHz, 800kHz, and 1MHz to 2.2MHz configurations.
Q: What package does it come in?
A: It is available in a 21-QFN package.
Q: What is the output voltage range?
A: The output is adjustable from 0.6V to 5.5V.