LT3048IDC-15#TRMPBF Integrated Circuits (ICs)

Voltage/Current - Output 3:	--
Base Part Number:	LT3048
Supplier Device Package:	8-DFN (2x2)
Package / Case:	8-WFDFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C
Voltage - Supply:	2.7 V ~ 4.8 V
w/Sequencer:	No
w/Supervisor:	No
w/LED Driver:	No
Series:	--
Voltage/Current - Output 2:	15V, 45mA
Voltage/Current - Output 1:	16.1V, 300mA
Frequency - Switching:	2.2MHz
Number of Outputs:	2
Function:	Any Function
Topology:	Step-Up (Boost) (1), Linear (LDO) (1)
Part Status:	Active
Packaging:	Tape & Reel (TR)

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LT3048IDC-15#TRMPBF Application Field and Working Principle

The LT3048IDC-15#TRMPBF is a high performance, quiescent current regulator IC with a wide range of applications. It is a high precision, low-noise regulator with a wide range of voltage output options, capable of integrated 3-phase synchronization.The main application of the LT3048IDC-15#TRMPBF is in the power management of precision analog circuits, such as in portable digital device applications, portable medical equipment, and semiconductor process measurement systems. The device features a 3-phase synchronous buck topology, capable of supplying up to 25mA of output current with an output voltage range of up to 15.75 V.The key features of LT3048IDC-15#TRMPBF include low quiescent current consumption (10µA when enabled and just 1µA in Sleep mode), a low dropout voltage of 0.3V, fast transient response and low output ripple (less than 5mV peak-to-peak). The device implements power-tracking with fixed frequency modulation, providing efficient and smooth power supply operation in a wide range of load conditions. This feature allows for simultaneous set points and current-mode control.The combined features make the device a great solution for low power and low noise applications. It is suitable for use in automotive and industrial control applications, in addition to battery powered systems and portable communication devices.The LT3048IDC-15#TRMPBF is a low dropout, voltage regulator IC that employs a current-mode control. This type of control has its advantages as it allows the IC to track current in a very precise and fast way and it can adequately respond to changing load conditions. The typical error range is excellent, usually less than 1%, and the oscillation frequency is frequency jitter free.The output voltage is programmed through the use of an external resistor network. The external components used to create the voltage regulator control loop can determine the output voltage range, the type of output noise, and the overall stability of the circuit.In operation, a pair of external resistors are used to program the reference voltage. A pair of internal NPN transistors is used to provide the voltage regulation. The power-good signal is generated when the output voltage is within 5% of the target voltage.In summary, the LT3048IDC-15#TRMPBF is a high performance, quiescent current regulator IC for the power management of precision analog circuits. It offers a combination of low power consumption, low noise output, fast transient response and programmable voltage output. It is a great solution for low power and low noise applications, and is suitable for use in battery powered systems, automotive and industrial control applications, and portable communication devices.

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