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.
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 |