| Allicdata Part #: | LTC3255EDD#PBF-ND |
| Manufacturer Part#: |
LTC3255EDD#PBF |
| Price: | $ 3.56 |
| Product Category: | Integrated Circuits (ICs) |
| Manufacturer: | Linear Technology/Analog Devices |
| Short Description: | IC REG SWTCHD CAP ADJ 50MA 10DFN |
| More Detail: | Charge Pump Switching Regulator IC Positive Adjust... |
| DataSheet: |  LTC3255EDD#PBF Datasheet/PDF |
| Quantity: | 165 |
| 1 +: | $ 3.23190 |
| 25 +: | $ 2.14402 |
| 100 +: | $ 1.79285 |
Specifications
| Voltage - Output (Min/Fixed): | 2.4V |
| Base Part Number: | LTC3255 |
| Supplier Device Package: | 10-DFN (3x3) |
| Package / Case: | 10-WFDFN Exposed Pad |
| Mounting Type: | Surface Mount |
| Operating Temperature: | -55°C ~ 150°C (TJ) |
| Synchronous Rectifier: | No |
| Frequency - Switching: | 500kHz |
| Current - Output: | 50mA |
| Voltage - Output (Max): | 12.5V |
| Series: | -- |
| Voltage - Input (Max): | 48V |
| Voltage - Input (Min): | 4V |
| Number of Outputs: | 1 |
| Output Type: | Adjustable |
| Topology: | Charge Pump |
| Output Configuration: | Positive |
| Function: | Step-Down |
| Part Status: | Active |
| Packaging: | Tube |
Description
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LTC3255EDD#PBF Application Field and Working Principle
LTC3255EDD#PBF, a component of the PMIC - Voltage Regulators - DC DC Switching Regulators, is a monolithic dual input power manager and high efficiency synchronous step-down switching regulator that operates from two separate input sources. It can work with a wide input voltage range from 4.5V to 32V and provide a single output voltage with high efficiency up to 95%. It integrates a 1.2A/150mΩ high-side switch, two low-side switches, dual-channel supplies and an input voltage power supervisor. This device can provide up to 1.2A of continuous output current and uses a unique input select logic to allow seamlessly transition between the two power sources.Application Field
The application field of LTC3255EDD#PBF is broad enough to include multiple scenarios such as backup power supplies, charged systems, and system optimization strategies. In the automotive industry, for example, it can be used to design a power system comprising a lead-acid battery and a 24V power system. Depending on the application, it can also work as a supply for system optimization strategies such as cold temperature startup or clean shutdown. It can also be used to provide power from a 12V or 24V lead-acid battery to a system requiring dual 5V supply rails.Working Principle
LTC3255EDD#PBF integrates two internal low-side switches and an external high-side switch. The two internal low-side switches are used to control the output voltage range, while the external high-side switch can be used to control the power-on/off state. High-side switching controls the power-on/off state, and the low-side switching controls the output voltage range.The device senses the input voltage from both power sources, and the input select logic adds up the two power sources together. If any of the power sources have a higher voltage than the threshold voltage, the input select logic will switch to that source. If both power sources have lower voltages, the source with the highest voltage will be chosen.The device is self-contained, so it does not require any external components other than the capacitors, resistors, and inductors used to construct the switching regulator. It is optimized for high efficiency, reducing the heat generated during the switching process.The device is also well suited to a wide range of applications such as automotive electrical systems, medical equipment, communication systems, lighting, and industrial control systems.Conclusion
LTC3255EDD#PBF is an ideal choice for applications that require power from two input sources. It has a wide input range of 4.5V to 32V, and can provide up to 1.2A of continuous output current. It also has a high efficiency of up to 95% and is well-suited for multiple application scenarios. By integrating the two internal low-side switches along with the external high-side switch, it offers an efficient, compact and reliable solution for designs that require a single output voltage from two power sources.The specific data is subject to PDF, and the above content is for reference
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