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Name: A5973ADTR
Brand: STMicroelectronics
SKU: A5973ADTR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Any Feature, including a modified Existing Feature, that is not an Existing Feature.

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STMicroelectronics A5973ADTR

Part No.:: A5973ADTR

Manufacturer:: STMicroelectronics

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

Datasheet:: A5973ADTR.pdf

Description:: IC REG BUCK ADJ 1.5A 8HSOP

In Stock:: 21865

Quantity:: Add To Cart

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A5973ADTR Typical application Circuitry

A5973ADTR

The A5973ADTR is a step-down switching regulator IC designed by STMicroelectronics. This device is engineered to convert a higher input voltage into a lower output voltage efficiently, making it an ideal choice for a variety of power management applications.

Application Scenarios

A5973ADTR fits perfectly into scenarios such as:

- Automotive Power Supplies: For powering various sensors and electronic components within a vehicle.

- Portable Devices: Efficient power management in battery-operated devices.

- LED Lighting: Driving LEDs with constant current for uniform brightness.

Parameter Features

Key features of the A5973ADTR include:

- Adjustable Output Voltage: Allows customization of the output voltage as per the application's requirement.

- High Efficiency: Reduces conversion-related energy loss, which is essential for battery-powered products.

- Thermal Protection: Ensures the device operates within safe temperature limits.

- Broad Input Voltage Range: Because it can accept a range of input voltages, it can support a number of power supply designs.

Specific Application Circuit: Portable Device Power Supply

One application of the A5973ADTR is in designing a power supply for portable devices. Here's a detailed circuit connection guide:

1.Input Voltage Connection: Connect the input voltage source to the VIN pin (pin 2). The A5973ADTR can handle a wide range of input voltages, allowing flexibility in choosing the power source.

2.Ground Connection: Connect the GND pin (pin 3) to the system ground. This common ground serves as the reference point for the entire circuit.

3. Setting the Output Voltage: To set the output voltage, connect a resistor divider between pin 5 (VOUT) and pin 1 (FB, or feedback), and finally ground. The output voltage is calculated from the values of these resistors using the formula found in the A5973ADTR datasheet.

4.Bootstrap Capacitor: Install a bootstrap capacitor by connecting it between pins 6 (SW) and pin 4 (BST). This capacitor is crucial for driving the internal N-MOSFET switch, enhancing the efficiency of the step-down conversion process.

5.Output Inductor and Capacitor: Connect an inductor from the SW pin (pin 6) to the output voltage node, then attach an output capacitor between the VOUT pin (pin 5) and ground. These components are essential for smoothing the output voltage and minimizing ripple.

Circuit Design Considerations

When designing with the A5973ADTR, several factors must be taken into account:

- Input Voltage Range: Ensure the input voltage is within the specified range of the A5973ADTR to prevent damage to the IC.

- Output Voltage Accuracy: Choose resistor values for the voltage divider carefully to achieve the desired output voltage with high accuracy.

- Thermal Management: Consider the thermal aspects of the A5973ADTR, including proper heat sinking and airflow, especially in high-power applications.

- Component Selection: Select the inductor and capacitor values according to the desired output current and voltage to ensure stability and minimize ripple.

Incorporating the A5973ADTR in a portable device power supply not only ensures efficient power conversion but also contributes to the longevity and reliability of the device by providing stable and regulated power.

A5973ADTR information

A5973ADTR Specifications

Packaging:
Tape & Reel (TR),Cut Tape (CT),Digi-Reel®
Series:
Automotive, AEC-Q100
ProductStatus:
Active
Function:
Step-Down
OutputConfiguration:
Positive
Topology:
Buck
OutputType:
Adjustable
NumberofOutputs:
1
Voltage-Input(Min):
4V
Voltage-Input(Max):
36V
Voltage-Output(Min/Fixed):
1.235V
Voltage-Output(Max):
36V
Current-Output:
1.5A
Frequency-Switching:
500kHz
SynchronousRectifier:
No
OperatingTemperature:
-40°C ~ 150°C (TJ)
MountingType:
Surface Mount

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6. What is the process for return or replacement of A5973ADTR?

All goods will implement Pre-Shipment Inspection (PSI), selected at random from all batches of your order to do a systematic inspection before arranging the shipment. If there is something wrong with the A5973ADTR we delivered, we will accept the replacement or return of the A5973ADTR only when all of the below conditions are fulfilled:

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

(2)We are informed of the defect described above within 90 days after the delivery of A5973ADTR.

(3)The PartNo is unused and only in the original unpacked packaging.

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(1)Inform us within 90 days

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