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L7987TR
+BOMIC REG BUCK ADJ 3A 16HTSSOP
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ManufacturerSTMicroelectronics
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Mfr. Part #L7987TR
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Datasheet L7987TR DataSheet
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Package HTSSOP-16
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In Stock1879
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Specifications
| Attribute | Value |
| Package | Tape & Reel (TR),Cut Tape (CT) |
| ProductStatus | Active |
| Function | Step-Down |
| OutputConfiguration | Positive |
| Topology | Buck |
| OutputType | Adjustable |
| NumberofOutputs | 1 |
| Voltage-Input(Min) | 4.5V |
| Voltage-Input(Max) | 61V |
| Voltage-Output(Min/Fixed) | 0.8V |
| Voltage-Output(Max) | 61V |
| Current-Output | 3A |
| Frequency-Switching | 250kHz ~ 1.5MHz |
| SynchronousRectifier | No |
| OperatingTemperature | -40°C ~ 150°C (TJ) |
| MountingType | Surface Mount |
| Package/Case | 16-TSSOP (0.173, 4.40mm Width) Exposed Pad |
Overview
Description
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- Key Features: Highlight important characteristics or capabilities.
- Specifications: Technical details such as size, compatibility, or performance parameters.
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Equivalent
1. Texas Instruments LM2675 - Step-down voltage regulator.
2. ON Semiconductor MC34063 - Switching regulator with adjustable output.
3. Microchip Technology MCP16301 - High-efficiency step-down regulator.
4. Diodes Incorporated AP63203 - Synchronous buck converter.
5. Analog Devices ADP2300 - Step-down DC-DC regulator.
These alternatives are selected based on similar specifications and functionalities. Always verify electrical characteristics for compatibility with your application.
Features
1. Input Voltage Range: It supports a wide input voltage range, typically from 4.5V to 61V, making it versatile for various applications.
2. Output Voltage: The regulator can provide an adjustable output voltage down to 0.6V, allowing flexibility based on the requirements of the application.
3. Output Current: It can deliver up to 3A of continuous output current, suitable for powering medium-power devices.
4. Efficiency: The device is designed for high efficiency, often exceeding 90%, which helps in reducing power loss and thermal stress.
5. Switching Frequency: It operates at a fixed switching frequency, typically around 250 kHz, enabling a compact design with smaller external components.
6. Protection Features: The L7987TR includes protection mechanisms such as overcurrent, overtemperature, and output short-circuit protection, enhancing reliability.
7. Soft Start: It features a programmable soft-start function to limit inrush current during start-up.
8. Applications: Commonly used in industrial, automotive, and consumer electronics applications for efficient power management.
These features make the L7987TR a reliable choice for diverse power regulation needs.
Pinout
1. Pin 1 (VIN): Input voltage supply pin; accepts a wide input voltage range, typically from 4.5V to 38V.
2. Pin 2 (EN): Enable pin; used to enable or disable the device.
3. Pin 3 (FB): Feedback pin; connected to the external resistor divider to set the output voltage.
4. Pin 4 (COMP): Compensation pin; used for stability and dynamic response optimization via external components.
5. Pin 5 (GND): Ground pin.
6. Pin 6 (FREQ): Frequency setting pin; can be used to set the switching frequency with an external resistor.
7. Pin 7 (BOOT): Bootstrap pin; supplies power to the high-side driver.
8. Pin 8 (SW): Switch output pin; connected to the inductor and drives the output load.
The L7987TR is a high-efficiency, reliable choice for applications requiring a compact and efficient DC-DC conversion solution.
Manufacturer
Application
1. Consumer Electronics: Power management for gadgets like smartphones, tablets, and laptops.
2. Industrial Automation: Used in control systems and machinery requiring regulated power.
3. Telecommunications: Supports equipment like routers and modems needing stable voltage.
4. Automotive: Powers electronic systems in vehicles, including infotainment and navigation.
5. LED Lighting: Provides efficient current regulation for LED drivers.
6. Embedded Systems: Supplies power to microcontrollers and processing units in IoT devices.
Its wide input voltage range and high efficiency make it suitable for any application needing reliable DC-DC conversion.