LT3095IUDD#PBF

Series:	--
Packaging:	Tube
Part Status:	Active
Topology:	Step-Up (Boost) (1), Linear (LDO) (1)
Function:	Any Function
Number of Outputs:	2
Frequency - Switching:	450kHz ~ 2MHz
Voltage/Current - Output 1:	Adj, 950mA
Voltage/Current - Output 2:	1 V ~ 20 V, 50mA
Voltage/Current - Output 3:	--
w/LED Driver:	No
w/Supervisor:	No
w/Sequencer:	No
Voltage - Supply:	3 V ~ 20 V
Operating Temperature:	-40°C ~ 125°C
Mounting Type:	Surface Mount
Package / Case:	24-WFQFN Exposed Pad
Supplier Device Package:	24-QFN (3x5)
Base Part Number:	LT3095

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LT3095IUDD#PBF Application Field and Working Principle

Introduction to PMIC - Voltage Regulators - Linear + Switching

A Power Management IC (PMIC) is an electronic device which helps regulate and control the power supply and distribution in electrical circuits. In particular, voltage regulators are used to maintain a certain voltage level by controlling the flow of current through a circuit. Among the types of voltage regulators, those which use linear and switching methods are the most commonly used.Linear regulators are cost effective, low-noise and have a simple design but with a relatively low efficiency. Switching regulators, on the other hand, are more complex and efficient, but generate more noise. Combining the use of linear and switching regulators in the same system is a common way of providing optimal performance without creating too much noise.

LT3095IUDD#PBF Application Field and Working Principle

The LT3095IUDD#PBF is a linear and switching voltage regulator providing a high accuracy, low-noise power supply for the most demanding applications. The LT3095IUDD#PBF is ideally suitable for providing a 3V output voltage from a single 2.7V to 11.4V input supply.The LT3095IUDD#PBF is a highly integrated solution that contains both a linear regulator and a buck regulator operating in a parallel configuration. A user-adjustable output voltage of up to 6.0V enables the device to be used in a wide range of applications. The device also features an inhibit shutdown pin, an enable shutdown pin and an overvoltage protection pin, making it suitable for automotive and industrial applications.The LT3095IUDD#PBF\'s linear regulator section is composed of a MOSFET pass element and an operational amplifier used to control the pass element. The load current passes through the MOSFET pass element, and when the voltage across the pass element is higher than the operating voltage of the operational amplifier, the amplifier shuts off the pass element, preventing further current flow.The LT3095IUDD#PBF\'s buck regulator section is composed of an oscillator, a power switch, and a current sense circuit. The oscillator generates a switching signal which is used to control the power switch. The current sense circuit monitors the current drawn from the input supply, and when the current drawn reaches a certain amount, the oscillator is shut off and the power switch is turned off. As a result, the current drawn from the input supply is reduced and the output voltage is maintained.In summary, the LT3095IUDD#PBF linear and switching voltage regulator offers high accuracy, low noise performance and is suitable for automotive and industrial applications. The combination of its linear and switching sections makes it ideal for providing superior performance without creating excessive noise.

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