LT3048EDC-12

Voltage/Current - Output 3:	--
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:	12V, 45mA
Voltage/Current - Output 1:	13.1V, 300mA
Frequency - Switching:	2.2MHz
Number of Outputs:	2
Function:	Any Function
Topology:	Step-Up (Boost) (1), Linear (LDO) (1)
Part Status:	Obsolete

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LT3048EDC-12 Application Field and Working PrincipleLinear and switching voltage regulators are an important tool for managing the output voltage of a variety of power electronics products. The LT3048EDC-12 is a low-noise, high-efficiency two-channel linear and switching regulator from Linear Technology. This regulator is designed to provide from 0 to 12V in one channel and from 0 to 3.3V in the other channel, making it ideal for many different applications. The LT3048EDC-12 is a highly versatile device that can be used as a switching regulator, linear regulator, or bypass regulator in both positive and negative voltage configurations. It is a low-power design that requires only a few external components and is easily configurable. The LT3048EDC-12 is capable of delivering up to 112mW of output power and is ideal for use in applications such as step-down regulators, switching regulators, and DC-DC converters.FeaturesThe LT3048EDC-12 features an adjustable output voltage range of 0 to 12V, an adjustable output current limiter, a programmable undervoltage lockout circuit, and a shut down/reset pin. It also has an adjustable switching frequency up to 1MHz, allowing for higher efficiency and lower noise. The device is protected against overtemperature and overcurrent, and provides tight load and line regulation with feedback from the output.Working PrincipleThe LT3048EDC-12 works in two modes, linear mode and switching mode. In linear mode, the internal op-amp acts as a conventional voltage regulator, using the feedback signal from the output to adjust the output voltage. The LT3048EDC-12 has a maximum output voltage of 12V, and the adjustable current limiter sets the maximum current that can be sourced or sunk by the regulator. In switching mode, an internal oscillator is used to control an internal switch that turns the regulator on and off at a constant frequency. A feedback loop adjusts the switch duty cycle, allowing the device to respond to changes in load and line voltage. The adjustable frequency of the oscillator allows for higher efficiency and lower output noise.The LT3048EDC-12 provides a comprehensive package of features, making it versatile and powerful enough for a wide range of applications. It is an ideal choice for powering low-power DC-DC converters, and its low noise operation makes it suitable for audio and other low-noise applications. Additionally, its adjustable output voltage makes it an excellent choice for precision voltage regulation.

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