Thông số kỹ thuật
| thuộc tính | Giá trị |
| Package | Tape & Reel (TR),Cut Tape (CT) |
| ProductStatus | Obsolete |
| Function | Step-Down |
| OutputConfiguration | Positive |
| Topology | Buck |
| OutputType | Adjustable |
| NumberofOutputs | 1 |
| Voltage-Input(Min) | 2.7V |
| Voltage-Input(Max) | 5.5V |
| Voltage-Output(Min/Fixed) | 1.1V |
| Voltage-Output(Max) | 3.3V |
| Current-Output | 600mA |
| Frequency-Switching | 2MHz |
| SynchronousRectifier | Yes |
| OperatingTemperature | -40°C ~ 85°C (TA) |
| MountingType | Surface Mount |
| Package/Case | SC-74A, SOT-753 |
Tổng quan
Description
The LM3671MF-ADJ is a step-down DC-DC converter designed by Texas Instruments. This device is primarily used to convert a higher input voltage to a lower output voltage efficiently. It operates with a 2 MHz fixed-frequency PWM to regulate output voltage, which minimizes the size of external components and makes it suitable for compact applications. The LM3671MF-ADJ supports an adjustable output voltage ranging from 1.5V to 5.5V, which can be set using external resistors.
Key features include high efficiency up to 95%, low output voltage ripple, and a load current of up to 600 mA. The device offers internal compensation, soft-start capabilities, and an enable pin for precise control. It also includes protection features like current overload protection and thermal shutdown. This makes the LM3671MF-ADJ suitable for portable devices, battery-powered applications, and other systems requiring efficient voltage regulation in a small footprint. Its compact MSOP package and minimal external components further enhance its suitability for space-constrained designs.
Key features include high efficiency up to 95%, low output voltage ripple, and a load current of up to 600 mA. The device offers internal compensation, soft-start capabilities, and an enable pin for precise control. It also includes protection features like current overload protection and thermal shutdown. This makes the LM3671MF-ADJ suitable for portable devices, battery-powered applications, and other systems requiring efficient voltage regulation in a small footprint. Its compact MSOP package and minimal external components further enhance its suitability for space-constrained designs.
Equivalent
The LM3671MF-ADJ is a step-down DC-DC converter. Equivalent products with similar specifications include:
1. MP2307 - By Monolithic Power Systems, offering adjustable output and comparable efficiency.
2. TLV62569 - By Texas Instruments, providing similar step-down functionality with adjustable output.
3. ADP2138 - By Analog Devices, offering similar voltage regulation flexibility.
4. TPS62150 - By Texas Instruments, with adjustable output voltage and compatible switching capabilities.
When selecting, verify the electrical specifications and package compatibility.
1. MP2307 - By Monolithic Power Systems, offering adjustable output and comparable efficiency.
2. TLV62569 - By Texas Instruments, providing similar step-down functionality with adjustable output.
3. ADP2138 - By Analog Devices, offering similar voltage regulation flexibility.
4. TPS62150 - By Texas Instruments, with adjustable output voltage and compatible switching capabilities.
When selecting, verify the electrical specifications and package compatibility.
Features
The LM3671MF-ADJ is a high-efficiency, step-down DC-DC converter optimized for battery-powered applications. Key features include:
1. Adjustable Output Voltage: It is capable of providing an adjustable output voltage, allowing flexibility in various applications.
2. High Efficiency: The converter operates with high efficiency up to 95%, reducing power loss and extending battery life.
3. Input Voltage Range: It supports a wide input voltage range, typically from 2.7V to 5.5V.
4. Output Current: The device can deliver up to 600 mA of continuous output current.
5. Low Quiescent Current: It features a low quiescent current of around 16 µA, making it suitable for portable and power-sensitive applications.
6. Fixed Frequency Operation: Operates at a fixed frequency, which reduces noise and improves power efficiency.
7. Enable Pin: Includes an enable pin for easy on/off control.
8. Compact Package: Available in a small SOT-23 package, optimizing board space.
These features make the LM3671MF-ADJ ideal for mobile phones, PDAs, and other portable devices requiring efficient power management.
1. Adjustable Output Voltage: It is capable of providing an adjustable output voltage, allowing flexibility in various applications.
2. High Efficiency: The converter operates with high efficiency up to 95%, reducing power loss and extending battery life.
3. Input Voltage Range: It supports a wide input voltage range, typically from 2.7V to 5.5V.
4. Output Current: The device can deliver up to 600 mA of continuous output current.
5. Low Quiescent Current: It features a low quiescent current of around 16 µA, making it suitable for portable and power-sensitive applications.
6. Fixed Frequency Operation: Operates at a fixed frequency, which reduces noise and improves power efficiency.
7. Enable Pin: Includes an enable pin for easy on/off control.
8. Compact Package: Available in a small SOT-23 package, optimizing board space.
These features make the LM3671MF-ADJ ideal for mobile phones, PDAs, and other portable devices requiring efficient power management.
Pinout
The LM3671MF-ADJ is a step-down DC-DC converter. It comes in a SOT-23-5 package, meaning it has 5 pins. The pin functions are as follows:
1. SW (Switch Pin): This is the power switching node that connects to the inductor. It is where the energy is switched from the input voltage to the output.
2. GND (Ground): This is the ground pin and serves as the reference point for all other voltages in the circuit.
3. FB (Feedback): This pin is used to set the output voltage. It monitors the output voltage and adjusts it through a resistor divider network to maintain a constant output voltage.
4. VIN (Input Voltage): This pin is connected to the input supply voltage. It powers the internal circuitry and is the source of energy for the output.
5. EN (Enable): This pin is used to enable or disable the device. A high level on this pin enables the converter, while a low level disables it.
This configuration allows the LM3671MF-ADJ to efficiently step down a higher voltage to a lower, regulated voltage suitable for various applications.
1. SW (Switch Pin): This is the power switching node that connects to the inductor. It is where the energy is switched from the input voltage to the output.
2. GND (Ground): This is the ground pin and serves as the reference point for all other voltages in the circuit.
3. FB (Feedback): This pin is used to set the output voltage. It monitors the output voltage and adjusts it through a resistor divider network to maintain a constant output voltage.
4. VIN (Input Voltage): This pin is connected to the input supply voltage. It powers the internal circuitry and is the source of energy for the output.
5. EN (Enable): This pin is used to enable or disable the device. A high level on this pin enables the converter, while a low level disables it.
This configuration allows the LM3671MF-ADJ to efficiently step down a higher voltage to a lower, regulated voltage suitable for various applications.
Manufacturer
The LM3671MF-ADJ is manufactured by Texas Instruments. Texas Instruments (TI) is a global semiconductor company that designs and manufactures a wide range of electronic components, primarily focused on integrated circuits and embedded processors. Founded in 1930 and headquartered in Dallas, Texas, TI has a strong presence in the electronics industry, providing products and solutions for various applications including automotive, industrial, consumer electronics, and communications. The company is well-known for its innovation in analog and digital signal processing, contributing significantly to advancements in technology across multiple sectors.
Application
The LM3671MF-ADJ is a step-down DC-DC converter used in applications requiring efficient voltage regulation and power management. Its application areas include portable communication devices, battery-powered electronics, smartphones, tablets, GPS devices, and handheld instruments. It is ideal for use in systems where space and energy efficiency are critical, such as wearable technology and compact electronic gadgets. The adjustable output voltage feature makes it versatile for various custom power requirements in embedded systems and consumer electronics.
Package
The LM3671MF-ADJ is a DC-DC step-down voltage regulator from Texas Instruments, provided in a SOT-23-5 package. This package is compact, making it suitable for space-constrained applications.
