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Name: L4972AD
Brand: STMicroelectronics
SKU: L4972AD
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 L4972AD

Part No.:: L4972AD

Manufacturer:: STMicroelectronics

Package:: 20-SOIC (0.295, 7.50mm Width)

Datasheet:: L4972AD.pdf

Description:: IC REG BUCK ADJUSTABLE 2A 20SO

In Stock:: 2583

Quantity:: Add To Cart

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L4972AD Specifications

Packaging:
Tube
Series:
-
ProductStatus:
Last Time Buy
Function:
Step-Down
OutputConfiguration:
Positive
Topology:
Buck
OutputType:
Adjustable
NumberofOutputs:
1
Voltage-Input(Min):
15V
Voltage-Input(Max):
50V
Voltage-Output(Min/Fixed):
5.1V
Voltage-Output(Max):
40V
Current-Output:
2A
Frequency-Switching:
100kHz ~ 200kHz
SynchronousRectifier:
No
OperatingTemperature:
-40°C ~ 150°C (TJ)
MountingType:
Surface Mount

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L4972AD information

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L4972AD Typical application Circuitry

L4972AD

The L4972AD is a highly integrated, step-down, switching regulator. Produced by STMicroelectronics, it is capable of delivering 2A of output current at an adjustable voltage from 5.1V to 40V.

L4972AD Feature Set:

1. Switching Regulator: The L4972AD is a step-down or "buck" regulator, capable of stepping down higher input voltages to lower output voltages, which is particularly useful in power supply designs.

2. High Output Current: Up to 2A of high output current can be provided by the L4972AD.

3. Adjustable Voltage: The output voltage is adjustable from 5.1V to 40V, providing flexibility in application scenarios.

4. Thermal Protection: The chip includes thermal shutdown and output overvoltage protection, ensuring safe operation even under adverse conditions.

L4972AD Application Scenarios:

The L4972AD is often used in onboard power supplies for automotive applications, decentralized power systems, and industrial control systems due to its ability to deliver high currents and work with wide-ranging adjustable voltages.

Detailed Circuit Connection – Decentralized Power System Example:

If you were to use the L4972AD in a decentralized power system, the following pin connections would be critical:

- Pin 1 (VIN): Connect the input voltage source, which should be within the operating voltage range of 8V to 55V, to this pin.

- Pin 2 (GND): This pin serves as the ground. Connect it to the circuit's ground.

- Pin 3 (VFB): Connect a voltage divider network from the output to this pin to set the desired output voltage.

- Pin 4 (ON/OFF): The L4972AD can be turned on or off using this pin. To regulate the operation of the regulator, connect to a switch or a microcontroller's GPIO.

- Pin 5 (VOUT): This pin provides the regulated output voltage.

Connect it to your load. Design Considerations:

1. Input Voltage: The input voltage should always be within the specified range (8V to 55V) for the L4972AD to function properly.

2. Heat Management: The L4972AD can produce heat during operation, particularly at high loads. Therefore, suitable heat management, such as using heat sinks or fans, might be necessary.

3. Output Capacitor: To lessen output voltage ripple, an output capacitor should be employed. The value of the capacitor should be chosen carefully considering the expected load current and ripple requirements.

4. Inductor Selection: The L4972AD is stability and effectiveness depend on the choice of inductor.

In general, the input voltage, output voltage, and switching frequency are used to calculate the inductor value. With its integrated features and robust protection capabilities, the L4972AD offers a powerful and flexible solution for a wide range of power supply applications.

L4972AD FAQ

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3. Are the L4972AD price and inventory displayed accurate?

The price and inventory of L4972AD fluctuates frequently and cannot be updated in time, it will be updated periodically within 24 hours. And, our quotation usually expires after 5 days.

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6. What is the process for return or replacement of L4972AD?

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 L4972AD we delivered, we will accept the replacement or return of the L4972AD 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 L4972AD.

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

Two processes to return the products:

(1)Inform us within 90 days

(2)Obtain Requesting Return Authorizations