BD9B304QWZ-E2 Integrated Circuits (ICs)

Voltage - Input (Max):	5.5V
Supplier Device Package:	UMMP008AZ020
Package / Case:	8-XFDFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TA)
Synchronous Rectifier:	Yes
Frequency - Switching:	1MHz, 2MHz
Current - Output:	3A
Voltage - Output (Max):	4.4V
Voltage - Output (Min/Fixed):	0.8V
Series:	--
Voltage - Input (Min):	2.7V
Number of Outputs:	1
Output Type:	Adjustable
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Part Status:	Active
Packaging:	Tape & Reel (TR)

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BD9B304QWZ-E2: DC DC Switching Regulator

The BD9B304QWZ-E2 is a type of DC-DC switching regulator, designed by ROHM Semiconductor. It is an ideal, high performance power supply solution for media centers, storage devices, home theater systems, and countless other applications. This device has a 2.5V-5V voltage input range and an adjustable output voltage from 0.6V to 5.0V.

Overview and Features

The BD9B304QWZ-E2 is one of ROHM Semiconductor\'s approved DC-DC switching products. This series of compact, low-cost regulators have a wide range of applications, including voltage regulation and current supply. Features of the BD9B304QWZ-E2 include high efficiency, low standby power consumption, low noise, fast start-up time and excellent line and load regulation. It has a wide range of regulation capabilities and can meet the strict demands of high-power device applications. Furthermore, the BD9B304QWZ-E2 provides a stable output voltage and can perform well under harsh environmental conditions, making it an ideal solution for embedded systems operating in extreme temperatures.

Applicable Product Fields

The BD9B304QWZ-E2 is ideally suited for a wide range of product fields, including automotive, consumer electronics, PCBs, embedded systems, and medical electronics. This device is designed for use in high-end applications where efficiency, stability, cost and low noise levels are essential. It can also be used in low-power applications, where low standby power is desired, or in applications operating in extreme temperatures.

Working Principle

The BD9B304QWZ-E2 provides a stable output voltage even when the input voltage fluctuates. This is achieved through the use of a constant-on-time (COT) control system, which is a type of pulse-width modulation (PWM) control system. This control system works by maintaining a constant duty cycle to regulate the output voltage. It achieves this by sampling the output voltage and comparing it to a reference voltage. If the output voltage is too high, the COT control system reduces the duty cycle to reduce the output voltage to the set level. Likewise, if the output voltage is too low, the COT control system increases the duty cycle to increase the output voltage to the set level.

Conclusion

The BD9B304QWZ-E2 is a type of DC-DC switching regulator, designed by ROHM Semiconductor. It is an ideal, high performance power supply solution for media centers, storage devices, home theater systems, and countless other applications due to its high efficiency, low standby power consumption, low noise and fast start-up times. The device is also suitable for use in high-dynamic applications due to its COT control system, as well as environments operating in extreme temperatures. In conclusion, the BD9B304QWZ-E2 is an ideal solution for a wide range of applications.

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