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Name: LM2672MX-ADJ/NOPB
Brand: Texas Instruments
SKU: LM2672MX-ADJ/NOPB
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Texas Instruments LM2672MX-ADJ/NOPB

Part No.:: LM2672MX-ADJ/NOPB

Manufacturer:: Texas Instruments

Package:: 8-SOIC (0.154, 3.90mm Width)

Datasheet:: LM2672MX-ADJ/NOPB.pdf

Description:: IC REG BUCK ADJUSTABLE 1A 8SOIC

In Stock:: 2071

Quantity:: Add To Cart

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LM2672MX-ADJ/NOPB Specifications

Packaging:
Tape & Reel (TR),Cut Tape (CT),Digi-Reel®
Series:
SIMPLE SWITCHER®
ProductStatus:
Active
Function:
Step-Down
OutputConfiguration:
Positive
Topology:
Buck
OutputType:
Adjustable
NumberofOutputs:
1
Voltage-Input(Min):
6.5V
Voltage-Input(Max):
40V
Voltage-Output(Min/Fixed):
1.21V
Voltage-Output(Max):
37V
Current-Output:
1A
Frequency-Switching:
260kHz
SynchronousRectifier:
No
OperatingTemperature:
-40°C ~ 125°C (TJ)
MountingType:
Surface Mount

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LM2672MX-ADJ/NOPB information

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LM2672MX-ADJ/NOPB Typical application Circuitry

LM2672MX-ADJ NOPB <

The LM2672MX-ADJ/NOPB is a prominent member of the LM2672 family, designed to be a versatile step-down voltage regulator. With the focus on ensuring ease of use, it reduces the external component count, thereby streamlining power supply designs.

Application Scenarios: Applications for the LM2672MX-ADJ/NOPB range widely, yet some of the most common ones include:

- Power management for hand-held devices where conversion efficiency is key.

- Desktop computers and peripherals that demand stable and adjustable power supplies.

- Telecommunication equipment with stringent voltage regulation needs.

- Distributed power systems seeking compact and efficient voltage regulation solutions.

Main Parameters:

1. Output Voltage Adjustability: The LM2672MX-ADJ/NOPB offers an adjustable output voltage, which can be set between 1.21V and 37V.

2. High Efficiency: The device is engineered to exceed 90% efficiency in many scenarios, making it exceptionally suitable for battery-dependent equipment.

3. Switching Frequency: It operates at a consistent frequency of 260 kHz. This allows for the use of compact external inductor and capacitors.

4. Safety Mechanisms: With built-in features such as thermal shutdown, current limiting, and over-voltage protection, the regulator offers reliability and safety.

Circuit Connection:

Visualize employing the LM2672MX-ADJ/NOPB in a desktop computer to supply power to a high-performance graphic card:

1. Power Input: Link the source voltage (ranging from 8V to 40V) to the VIN pin (typically Pin 5). Ensure that the GND pin (often Pin 2) has a secure connection to the system's ground.

2. Configuring Output Voltage: Use a resistor (let's name it R1) and connect it between the VOUT pin (generally Pin 4) and the feedback pin (commonly Pin 1). Then, connect another resistor (R2) from the FB pin down to the ground. The desired output voltage can be derived from the equation: Vout = 1.21 * (1 + R1/R2).

3. Switching Mechanism: The SW pin, usually Pin 3, should be tied to one terminal of an external coil (denoted as L). The other terminal of this inductor is linked to the output voltage. This inductor is crucial for the voltage step-down mechanism.

4. Output Filtering: For suppressing noise and maintaining voltage stability, connect a capacitor, termed Cout, between the VOUT pin and the system ground.

Design Considerations:

1. Choice of Components: Given the switching behavior of LM2672MX-ADJ/NOPB, selecting capacitors with a low equivalent series resistance (ESR) can dramatically refine performance and cut down output voltage fluctuations.

2. Thermal Management: If the chip operates under significant load or there's a considerable difference between input and output voltages, it might warm up. Implementing proper heat dissipation methods, such as heat sinks, becomes essential.

3. Inductor's Value: The chosen value for the inductor can influence the overall efficiency of the LM2672MX-ADJ/NOPB. A ballpark range for most applications lies between 22µH to 68µH.

4. Board Layout: Aim for short trace lengths, especially around the feedback loop, to minimize noise or potential oscillations. Having a robust ground plane is paramount.

To sum it up, the LM2672MX-ADJ/NOPB is a testament to flexibility in voltage regulation. Its combination of efficiency, adjustable output, and minimized external components makes it a go-to choice for myriad applications. When leveraging its power, paying heed to component selection, layout design, and thermal considerations can substantially elevate its performance and durability.

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(1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.

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