L4931ABPT25

Current - Output:	250mA
Base Part Number:	L4931AB
Supplier Device Package:	PPAK
Package / Case:	TO-252-5, DPak (4 Leads + Tab), TO-252AD
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C
Protection Features:	Over Current, Over Temperature
Control Features:	--
PSRR:	75dB ~ 55dB (120Hz ~ 10kHz)
Current - Supply (Max):	6mA
Current - Quiescent (Iq):	1mA
Series:	--
Voltage Dropout (Max):	0.8V @ 250mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	2.5V
Voltage - Input (Max):	20V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Obsolete
Packaging:	Tube

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L4931ABPT25 Application Field and Working Principle

PMIC, or Power Management Integrated Circuit, is a collection of diverse power control functions that are typically applied to an integrated microchip. This chip most often consists of a voltage regulator, an energy saving system, an overvoltage protection unit, and other regulating elements. The L4931ABPT25 is a linear type of voltage regulator from STMicroelectronics, designed for optimizing battery life. It helps to regulate power consumption and efficiently manage the current within the battery for a long service life. The L4931ABPT25 datasheet shows the device to be a voltage regulator that can reduce power supply levels for mobile devices, digital cameras, and remote control systems. It is specially designed for Li-Ion/Li-Polymer battery applications, as well as standby operations in notebook computers. STMicroelectronics has designed the L4931ABPT25 to be a compact and complete control system solution. It contains a sophisticated protection system with LDO voltage regulators and voltage supervisors.The primary function of the L4931ABPT25 is to regulate the voltage of the device it is powering. The device uses an input voltage range of 4.8 to 25V and provides an output voltage accuracy of ±1%. It also has a low quiescent current that can be used to increase the batteries\' service life. It is Line transient protected, protecting it from disruption due to poor line conditions. The working principle of the L4931ABTP25 is quite simple. It works by converting the high input voltage to a much lower and regulated secondary power output. The device does this by employing a low-dropout or LDO linear regulator that drops the input voltage through a pair of transistors or an internal fuse. This ensures that the output voltage is within the required range, thus providing excellent power management that optimizes battery performance.The L4931ABPT25 is an ideal choice for any application where efficient and long-lasting battery power is required. The device is generally preferred for situations that calls for low noise, low power consumption and high efficiency. The device also allows for safe and direct connections to the battery terminals, thus eliminating the need to use a voltage adapter. It can operate over a wide temperature range and can be programmed and controlled using simple commands. Overall, the L4931ABPT25 is an excellent choice as a battery charger and power regulator. It is an ideal choice for applications such as mobile phones, digital cameras, and GPS systems. It is a highly versatile device, highly efficient and can provide necessary power up to 25V. It is also available in RoHS-compliant lead-free finish and is compatible with standard manufacturing processes.

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