EVB_RT6238AHGQUF: 1V @ 8A, 4.5 ~ 18V in

Summary

The EVB_RT6238AHGQUF is a high-performance 500kHz, 8A step-down regulator reference design with internal power switches and synchronous rectifiers.

It features quick transient response using its Advanced Constant On-Time (ACOT™) control architecture that provides stable operation with small ceramic output capacitors and without complicated external compensation, among other benefits. With internal 35mΩ switches and 14mΩ synchronous rectifiers, the RT6238A displays excellent efficiency and good behavior across a range of applications, especially for low output voltages and low duty cycles.

Cycle-by-cycle current limit provides protection against shorted outputs, input under-voltage lockout, externally-adjustable soft-start, output under- and over-voltage protection, and thermal shutdown provide safe and smooth operation in all operating conditions. The RT6238A is available in the UQFN-14L 2x3 (FC) package, with exposed thermal pad.

Specifications

Manufacturer Richtek USA Inc.
Category AC/DC and DC/DC Conversion
Sub-Category DC/DC SMPS - Single Output
Eval Board Part Number EVB_RT6238AHGQUF-ND
Eval Board Supplier Richtek USA Inc.
Eval Board Board not Stocked
Topology Step Down
Outputs and Type 1 Non-Isolated
Voltage Out: Factory Set 1 V
Current Out 8 A
Voltage In 4.5 ~ 18 V
Efficiency @ Conditions >96%, 12V in, 5V @ 1.5 ~ 5 A
>94%, 12V in, 3.3V @ 1 ~ 5.5 A
>90%, 12V in, 1.8V @ 0.5 ~ 5.5 A
>89%, 12V in, 1.2V @ 1 ~ 4 A
>88%, 12V in, 1V @ 1 ~ 4 A
Voltage Out Range 0.7 ~ 8 V
Features Current Limit (Adj. or Fixed)
Over Current Protection
Over Voltage Protection
Power Good Output
Shutdown, Enable, Standby
Soft Start
Thermal Protection
Under Voltage Protection, Brown-Out
Switching Frequency 500 kHz
Standby Current [Typical] 1.5 µA
Quiescent Current [Typical] 600 µA
Component Count + Extras 15 + 19
Internal Switch Yes
Design Author Richtek USA Inc.
Application / Target Market FPGA / DSP / Processors
LCD TV / Monitor
Networking
Point of Load (PoL)
Power: Industrial Power
Standby Current [Maximum] 6 µA
Quiescent Current [Maximum] 900 µA
Main I.C. Base Part RT6238A
Date Created By Author 2016-08
Date Added To Library 2024-01

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