| Allicdata Part #: | SC187ULTRT-ND |
| Manufacturer Part#: |
SC187ULTRT |
| Price: | $ 0.00 |
| Product Category: | Integrated Circuits (ICs) |
| Manufacturer: | Semtech Corporation |
| Short Description: | IC REG BUCK PROG 4A SYNC 16MLPD |
| More Detail: | Buck Switching Regulator IC Positive Programmable ... |
| DataSheet: |  SC187ULTRT Datasheet/PDF |
| Quantity: | 1000 |
Specifications
| Voltage - Input (Max): | 5.5V |
| Supplier Device Package: | 16-MLPQ (3x3) |
| Package / Case: | 16-UFQFN Exposed Pad |
| Mounting Type: | Surface Mount |
| Operating Temperature: | -40°C ~ 125°C (TJ) |
| Synchronous Rectifier: | Yes |
| Frequency - Switching: | 2.2MHz |
| Current - Output: | 4A |
| Voltage - Output (Max): | 3.3V |
| Voltage - Output (Min/Fixed): | 0.8V |
| Series: | -- |
| Voltage - Input (Min): | 2.9V |
| Number of Outputs: | 1 |
| Output Type: | Programmable |
| Topology: | Buck |
| Output Configuration: | Positive |
| Function: | Step-Down |
| Part Status: | Active |
| Packaging: | Tape & Reel (TR) |
Description
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The SC187ULTRT is a 5A synchronous step-down voltage regulator that is designed specifically for low voltage and ultra-low voltage (2.85V - 8V) high current applications. It is a highly efficient, pin-compatible, fixed frequency current-mode control, with external components and an internal power switch. It is capable of providing up to 5A of total current, with voltage output from 0.8V to the input voltage, utilizing a wide selection of external MOSFETs that provide selectable low noise and low-ripple outputs.
Application Field
The SC187ULTRT is ideal for applications such as LED lighting, fleet management, communication infrastructure, and consumer electronics, where high precision voltage regulation is required over a wide temperature range. It’s pin compatible with a wide range of existing buck regulators and provides optimal performance in terms of current, output ripple, transient response, and efficiency. It can provide up to 6W of output power from a tiny 3x3mm QFN package, making it an ideal solution for space-constrained applications.Working Principle
The SC187ULTRT utilizes a current-mode control topology, which provides a tightly regulated output voltage. It uses an external sense resistor for current sensing and feedback control, and an external MOSFET for the power switch. The output voltage is determined by the feedback voltage from the sense resistor and the current modulator, and is adjusted dynamically according to the load or temperature changes.The device uses a single-loop-control architecture, and has built-in over-voltage, over-current, and thermal protections. It also protects against over-discharge, over-charge, and battery-reverse current, ensuring safe operation in all system conditions. A comprehensive suite of protection and power-saving features, such as soft start, adjustable PWM/PFM operating mode, and light load efficiency, make the SC187ULTRT a great choice for cost-sensitive applications.Conclusion
The SC187ULTRT is an ideal choice for high-current, low-voltage and ultra-low-voltage applications. Its current-mode control topology ensures a tight output voltage regulation and excellent transient response even at high switching frequency. It is a highly efficient, fixed frequency current-mode controller that utilizes external components and an internal power switch. It has comprehensive protection features, a tiny 3x3mm QFN package, and wide operating temperature range that make it a perfect choice for space-conscious applications.The specific data is subject to PDF, and the above content is for reference
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