Allicdata Part #: | BD9778F-E2TR-ND |
Manufacturer Part#: |
BD9778F-E2 |
Price: | $ 0.00 |
Product Category: | Integrated Circuits (ICs) |
Manufacturer: | ROHM Semiconductor |
Short Description: | IC REG BUCK ADJ 2A SOP8 |
More Detail: | Buck Switching Regulator IC Positive Adjustable 1V... |
DataSheet: | BD9778F-E2 Datasheet/PDF |
Quantity: | 1000 |
Specifications
Series: | -- |
Packaging: | Tape & Reel (TR) |
Part Status: | Active |
Function: | Step-Down |
Output Configuration: | Positive |
Topology: | Buck |
Output Type: | Adjustable |
Number of Outputs: | 1 |
Voltage - Input (Min): | 7V |
Voltage - Input (Max): | 35V |
Voltage - Output (Min/Fixed): | 1V |
Voltage - Output (Max): | 35V |
Current - Output: | 2A |
Frequency - Switching: | 50kHz ~ 500kHz |
Synchronous Rectifier: | No |
Operating Temperature: | -40°C ~ 125°C (TA) |
Mounting Type: | Surface Mount |
Package / Case: | 8-SOIC (0.173", 4.40mm Width) |
Supplier Device Package: | 8-SOP |
Base Part Number: | BD9778 |
Description
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Introduction to BD9778F-E2 DC DC Switching RegulatorThe BD9778F-E2 is a highly integrated DC-DC switching regulator which supports both step-up and step-down operating modes. It is designed for a wide variety of battery-driven applications, such as portable devices, and is ideal for stand-alone applications that require low power, low occupancy, and high efficiency. The BD9778F-E2 combines two components – an integrated, high power transistor and an integrated control circuit – into one package, reducing overall system cost with improved performance.
The BD9778F-E2 is a complete synchronous switching regulator solution, including an internal power transistor, high efficiency step-up and step-down switching regulator, switching frequency PWM generator and MOSFET driver. In addition, the device is configurable for two or four independent voltage outputs. This high level of integration not only reduces design cost and effort, but also produces an efficient regulator solution for both stand-alone and shared power applications, thus eliminating the need for an external support component such as an inductor.
Application and Working Principle of BD9778F-E2
The BD9778F-E2 DC-DC switching regulator is suitable for a wide range of applications, including DC/DC conversion such as step-up and step-down, LED lighting, etc. With its internal high power MOSFET, the BD9778F-E2 is able to switch up to 8A low side current, and up to 8V high side voltage. It supports up to 8 output voltage configurations, with the possibility of up to four outputs in parallel mode. The device is also capable of delivering up to 4A of output current (at 3.3V, 4V, and 5V output voltages) and 10A of output current (at 12V, 13.5V, 15V, and 24V output voltages).
In terms of its working principle, the BD9778F-E2 implements a synchronous switching regulators architecture. This type of regulator generally consists of a high-side power transistor, a controller circuit, and an inductor, which serves to smooth out the switching frequencies generated by the controller. Additionally, it comprises an operational amplifier, a low-side power transistor, and a resistor divider. The operational amplifier senses the output voltage, compares it to the reference voltage, and sends the error signal back to the controller, which then adjusts the switching frequency accordingly.The BD9778F-E2 also incorporates four digital logic input pins to select the operating mode, for example Closed Loop/Open Loop, Synchronous Rectification, and/or Overvoltage Protection. The internal 8bit 4-phase voltage detection circuit and programmable overvoltage protection (OVP) features further increase system protection. With its minimal standby current, excellent transient performance, and high efficiency, the BD9778F-E2 is the ideal solution for both stand-alone and shared power applications.
Conclusion
The BD9778F-E2 DC-DC switching regulator is an integrated solution that simplifies system design and reduces costs. With its high power capability, multiple voltage output options, and support for various operating modes, the BD9778F-E2 is the ideal solution for portable and battery-driven applications. This highly integrated solution provides maximum efficiency and performance when designed into your application.
The specific data is subject to PDF, and the above content is for reference
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