L5981 Allicdata Electronics
Allicdata Part #:

L5981-ND

Manufacturer Part#:

L5981

Price: $ 0.00
Product Category:

Integrated Circuits (ICs)

Manufacturer: STMicroelectronics
Short Description: IC REG BUCK ADJ 1A 8VFQFPN
More Detail: Buck Switching Regulator IC Positive Adjustable 0....
DataSheet: L5981 datasheetL5981 Datasheet/PDF
Quantity: 1000
Stock 1000Can Ship Immediately
Specifications
Voltage - Output (Min/Fixed): 0.6V
Base Part Number: L5981
Supplier Device Package: 8-VFQFPN (3x3)
Package / Case: 8-VFDFN Exposed Pad
Mounting Type: Surface Mount
Operating Temperature: -40°C ~ 150°C (TJ)
Synchronous Rectifier: No
Frequency - Switching: 250kHz ~ 1MHz
Current - Output: 1A
Voltage - Output (Max): 18V
Series: --
Voltage - Input (Max): 18V
Voltage - Input (Min): 2.9V
Number of Outputs: 1
Output Type: Adjustable
Topology: Buck
Output Configuration: Positive
Function: Step-Down
Part Status: Discontinued at Digi-Key
Packaging: Tube 
Description

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The L5981 is a type of DC DC switching regulator, which is commonly used in a range of various consumer electronics in order to produce regulated voltages either below or above the input voltage. It is part of a wide list of devices known as PMIC (Power Management Integrated Circuits) and its main function is to reduce the effective output ripple, allowing a stable output voltage in order to reduce the costs or increase the lifetime of the device in which it is embedded.

The L5981 is a type of DC DC switching regulator that consists of two basic stages. The first stage is typically a switching regulator, which converts the input DC voltage into a higher or lower DC voltage, depending on the type of application. The second stage is then used to filter the output ripple in a bid to smooth out the output voltage.

The L5981 can be used in one of two main application fields. The first is for DC sub-supplies, which occur in redundant power supplies and DC/DC converters. The L5981 is used in these cases as a filter regulator to reduce the effective output voltage ripple.

The second type of application that the L5981 is suitable for is step-down applications. These are usually found in devices in which the main input voltage needs to be regulated to a lower output voltage. In these cases, the L5981 is used to effectively boost the main input voltage while filtering the output in order to maintain a stable output voltage.

The L5981 works on the principle of Pulse Width Modulation (PWM). This is quite simply a method that uses switched current in order to effectively regulate the output voltage. In PWM, the rate of the on/off signal of a switching device is measured to effectively regulate the output signal according to the measured signal.

The L5981 is typically used in conjunction with other power management ICs. The PWM signal is then used to drive a voltage regulator by providing a means to control the output voltage. This is done by controlling the output frequency of the PWM signal. A higher frequency will produce an increased current in the output, while a lower frequency will result in a decreased current in the output. This then allows the output voltage to be appropriately adjusted and regulated.

The L5981 can thus provide a simple and effective way to reduce the output ripple of consumer electronics. Its main function is to regulate the input voltage to a lower or higher level, while at the same time reducing the effective ripple in order to keep the output voltage stable and avoid any damage to the device\'s circuit. The L5981 is thus an important device in the power management industry and its use is widespread, especially in consumer electronics such as laptops, mobile phones, cameras and so on.

The specific data is subject to PDF, and the above content is for reference

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