EVB_RT6278BHGQUF: 3.3V @ 8A, 4.5 ~ 23Vin

Summary

The EVB_RT6278BHGQUF is an advanced constant on-time (ACOT) mode synchronous buck converter. The main control loop of the RT6278B using an advanced constant on-time (ACOT) mode control which provides a very fast transient response. The RT6278B operates from 4.5V to 23V input voltage, the output voltage can be programmed between 0.6V to 5.1V.

Product Features:

ACOT Mode Performs Fast Transient Response
ACOT Architecture to Enable All MLCC Output Capacitor Usage
High Efficient Internal Power MOSFET Switch 24mΩ (High-Side) and 12mΩ (Low-Side)
Adjustable Output Voltage from 0.6V to 5.1V
Pre-biased Soft-Start

Specifications

Manufacturer	Richtek USA Inc.
Category	AC/DC and DC/DC Conversion
Sub-Category	DC/DC SMPS - Single Output
Eval Board Part Number	EVB_RT6278BHGQUF-ND
Eval Board Supplier	Richtek USA Inc.
Eval Board	Normally In Stock
Topology	Step Down
Outputs and Type	1 Non-Isolated
Voltage Out: Factory Set	3.3 V
Current Out	8 A
Voltage In	4.5 ~ 23 V
Efficiency @ Conditions	>95%, 12V in, 5V @ 1 ~ 8 A >90%, 12V in, 3.3V @ 1 ~ 8 A >85%, 12V in, 1.2V @ 1 ~ 8 A
Voltage Out Range	0.6 ~ 5.1 V
Features	Current Limit (Adj. or Fixed) Over Current Protection Over Voltage Protection Soft Start Thermal Protection Under Voltage Protection, Brown-Out
Switching Frequency	500 kHz
Standby Current [Typical]	5 µA
Quiescent Current [Typical]	130 µA
Component Count + Extras	22 + 21
Internal Switch	Yes
Design Author	Richtek USA Inc.
Application / Target Market	Computers LCD TV / Monitor Networking Point of Load (PoL) Power: Industrial Power White Goods
Standby Current [Maximum]	10 µA
Quiescent Current [Maximum]	- Not Given
Main I.C. Base Part	RT6278B
Date Created By Author	2017-09
Date Added To Library	2018-10