SRAH-12F1A0R

Current - Output (Max):	12A
Control Features:	Enable, Active High
Size / Dimension:	0.78" L x 0.70" W x 0.32" H (19.7mm x 17.8mm x 8.1mm)
Package / Case:	7-SMD Module
Mounting Type:	Surface Mount
Efficiency:	94%
Operating Temperature:	-40°C ~ 85°C
Features:	Remote On/Off, OCP, SCP, UVLO
Applications:	ITE (Commercial)
Power (Watts):	40W
Series:	xRAH-12F1A0
Voltage - Output 3:	--
Voltage - Output 2:	--
Voltage - Output 1:	0.9 ~ 3.3 V
Voltage - Input (Max):	5.5V
Voltage - Input (Min):	3V
Number of Outputs:	1
Type:	Non-Isolated PoL Module
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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Introduction to SRAH-12F1A0R DC DC Converter

The SRAH-12F1A0R DC DC converter is a full-featured 0.75 to 45 VDC step-down DC-DC converter with a wide 4:1 input voltage range of 4.5 to 18 VDC, 150 kHz switching frequency, and up to 1.2 A of switch current. It also has an adjustable switching frequency, current limit, and enable/disable. The device utilizes two buck cells, one for high current and one for low current, to provide a very reliable and efficient conversion process.

Application Fields for SRAH-12F1A0R DC DC Converter

The SRAH-12F1A0R DC DC converter is well suited for many different applications, primarily in the telecom and DSP arenas. It can be used in a wide range of applications, such as distributed power systems, Ethernet switches, DSPs, and VoIP equipment. In addition, it can also be used in home theater equipment, LCD TVs and computer monitors, automotive and rail transportation systems, and medical equipment applications. The device is also ideal for fan-less computers and mobile applications due to its low power consumption and small size.

Working Principle of SRAH-12F1A0R DC DC Converter

The SRAH-12F1A0R DC DC converter utilizes two buck cells in the conversion process. The Buck 1 cell operates at a higher frequency to handle higher current loads, while the Buck 2 cell operates at a lower frequency to handle lighter load scenarios. A voltage regulator senses and adjusts the output voltage so that it is is maintained within the desired parameters. The device also features an "output enable" pin that allows for quick and easy enable/disable of the output voltage. Additionally, the switching frequency is adjustable from 150 to 500 kHz and the current limit is adjustable from 0.3 to 1.2 A.

Conclusion

The SRAH-12F1A0R DC DC converter is a full-featured DC-DC converter with a wide 4:1 input voltage range of 4.5 to 18 VDC, a wide switch current of 0.3 to 1.2 A, and an adjustable switching frequency. It is well-suited for a wide variety of applications in the telecom and DSP arenas, as well as in home theater and automotive applications. It features an adjustable switching frequency, current limit, and an output enable/disable pin to make it easy to use. With its low power consumption and small size, it is ideal for fan-less computers and mobile applications.

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