L4931CD33Y

Current - Output:	250mA
Supplier Device Package:	8-SO
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C
Protection Features:	Over Current, Over Temperature
Control Features:	--
PSRR:	73dB ~ 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):	3.3V
Voltage - Input (Max):	20V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Active
Packaging:	Tube

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The L4931CD33Y is a linear voltage regulator with adjustable voltage regulator, protected by an internal current limit, thermal overload, and short-circuit protection. It is part of a large family of voltage regulators, i.e. 3V, 5V, 12V, 15V and adjustable voltage regulators which are all protected from short-circuit and overload conditions. Its excellent features and performance combine to make it ideal for use in a variety of applications.

The L4931CD33Y is a low dropout voltage regulator suitable for a varietyof applications such as notebook computer, audio/video systems, DC/DC converters, game consoles, and electronic data instruments. It is designed to provide a stable output voltage of 3.3V to an input voltage of up to 36V. The ST L4931CD33Y also features an integrated load switch allowing the load to be disconnected when the voltage level drops below a predetermined level. This ensures that the system can be powered down while still maintaining the load\'s output voltage.

The L4931CD33Y is a three terminal device with an input, output, and an enabling pin.The regulator is enabled by a voltage level on the ENABLE pin, which shifts the output voltage off the GND plane and onto a VOUT plane that is determined by the IADJ pin voltage. When the voltage on the ENABLE pin is high, the regulator is enabled and the current limitation occurs at a fixed adjustable value. When the ENABLE pin is low, all internal circuitry is off and the output voltage is zero.

The L4931CD33Y can be used a single-ended or dual supply switching regulator. In the dual-supply mode, the device converts a high voltage from the input to a lower voltage at the output. This is done by switching rapidly between two different voltages while always maintaining the output voltage at its predetermined value. This type of regulator is very useful in applications that require high power efficiency and support a wide range of voltage requirements.

The L4931CD33Y has several working principles, depending on the application. In the single-ended mode, the regulator works by conducting a current path between input and output voltage terminals in either a forward or reverse direction. When the input voltage is above the predetermined voltage, the device will conduct current in the forward direction, thus producing a higher output voltage. When the input voltage is below the predetermined voltage level, the device will conduct current in the reverse direction and produce a lower output voltage.

In the dual-supply mode, the device switches between two different input voltages to regulate the output voltage. When the input voltage is above a certain predetermined level, it switches to the higher voltage and when the voltage is below the predetermined level, it switches to the lower voltage. This enables the device to maintain a constant output voltage while only consuming a low amount of power.

The L4931CD33Y is a versatile device with a wide variety of applications, from notebook computers and audio/video systems to data instruments. Its features, such as an adjustable voltage regulator, integrated load switch, and robust reverse current limitation protection, make it a valuable choice for these types of applications. Its versatility makes it an ideal choice for a wide range of applications, from low power to high power solutions.

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