| Allicdata Part #: | ADP1878ACPZ-0.3-R7TR-ND |
| Manufacturer Part#: |
ADP1878ACPZ-0.3-R7 |
| Price: | $ 1.24 |
| Product Category: | Integrated Circuits (ICs) |
| Manufacturer: | Analog Devices Inc. |
| Short Description: | IC REG CTRLR BUCK 14LFCSP |
| More Detail: | Buck Regulator Positive Output Step-Down DC-DC Co... |
| DataSheet: |  ADP1878ACPZ-0.3-R7 Datasheet/PDF |
| Quantity: | 1000 |
| 1500 +: | $ 1.12896 |
Specifications
| Frequency - Switching: | 300kHz |
| Base Part Number: | ADP1878 |
| Supplier Device Package: | 14-LFCSP-WD (4x3) |
| Package / Case: | 14-WFDFN Exposed Pad, CSP |
| Operating Temperature: | -40°C ~ 125°C (TJ) |
| Control Features: | Enable, Power Good, Soft Start |
| Serial Interfaces: | -- |
| Clock Sync: | No |
| Synchronous Rectifier: | Yes |
| Duty Cycle (Max): | 84% |
| Series: | -- |
| Voltage - Supply (Vcc/Vdd): | 2.95 V ~ 20 V |
| Output Phases: | 1 |
| Number of Outputs: | 1 |
| Topology: | Buck |
| Output Configuration: | Positive |
| Function: | Step-Down |
| Output Type: | Transistor Driver |
| Part Status: | Active |
| Packaging: | Tape & Reel (TR) |
Description
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Introduction
The ADP1878ACPZ-0.3-R7 is a power management integrated circuit (PMIC), specifically a voltage regulator, which is commonly used for DC-DC switching controllers. This highly integrated IC from Analog Devices simplifies the design requirement for these applications. It combines current mode Control and an n-channel MOSFET (Metal-Oxide-Semiconductor Field-Effect Transistor) driver into one small solution while functioning with low quiescent current and low standby current.Features
The ADP1878ACPZ allows single-cell Li-ion battery operation and provides a fully adjustable output voltage, starting from 0.375 V. Its wide 4.5V to 21V input voltage allows the device to be regulated with input sources ranging from DC adapters to battery packs. For output current monitoring, precision 0.1% voltage regulation accuracy is possible. Its built-in daisy circuit limits maximum switching current of the n-channel MOSFET driver to 700mA and its adjustable frequency can be set up to 1MHz. Additionally, the ADP1878ACPZ prevents over-voltage and over-current conditions thanks to its external current-sense resistor which limits maximum output current.Applications
The ADP1878ACPZ is one of the most suitable solutions for applications such as mobile devices, digital power supplies, and high performance computing systems, where low current consumption and high accuracy and precision of output voltage are important. This DC-DC switching controller is also very suitable for applications where over-voltage and over-current protection is required.Working Principle
The ADP1878ACPZ is based on a Voltage Mode control architecture, and it uses a single-ended N-channel MOSFET driver. A high power, low RDS(on) MOSFET is needed to regulate the output voltage. When the input voltage is greater than the output voltage, the series MOSFET conductor is activated and it sources current to the load, while the switching current flows through the external current sense resistor into the PWM pin. The output voltage is directly proportional to the feedback from the CTRL pin. When the sensed voltage from the feedback pin exceeds the reference voltage, it triggers a non-overlapping signal for the MOSFET driver and the MOSFET is turned off to cut the flow of current.Conclusion
The ADP1878ACPZ-0.3-R7 is a complex and highly efficient PMIC for DC-DC switching controllers for a wide range of mobile device, digital power supply, and high performance computing system applications. It has a wide input voltage range, it provides precision 0.1% voltage regulation accuracy and has multiple control features such as over-voltage and over-current protection. Its Voltage Mode control architecture, its series MOSFET driver, and its external current-sense resistor make it an excellent choice when accuracy and precision are important.The specific data is subject to PDF, and the above content is for reference
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