LTC3122EDE#PBF

Voltage - Output (Min/Fixed):	2.2V
Base Part Number:	LTC3122
Supplier Device Package:	12-DFN (4x3)
Package / Case:	12-WFDFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C (TJ)
Synchronous Rectifier:	Yes
Frequency - Switching:	1MHz
Current - Output:	2.5A (Switch)
Voltage - Output (Max):	15V
Series:	--
Voltage - Input (Max):	5.5V
Voltage - Input (Min):	1.8V
Number of Outputs:	1
Output Type:	Adjustable
Topology:	Boost
Output Configuration:	Positive
Function:	Step-Up
Part Status:	Active
Packaging:	Tube

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Introduction to the LTC3122EDE#PBFThe LTC3122EDE#PBF is a versatile DC/DC step-down power management IC (PMIC) from Linear Technology. It is a synchronous buck converter designed for ultra-low-power applications requiring a supply voltage from 1.8V to 5.5V and a regulated output voltage from 0.3V to VIN. The device features 2 MHz switching frequency allowing the use of tiny externals components such as 0.47 μH inductor and form factor as little as 3.2mm x 3.2mm.The linear LTC3122EDE#PBF DC/DC switching regulator can be used to power a variety of microcontrollers, digital logic, RF transceivers, and portable electronic devices. It is well suited for energy harvesting applications such as solar energy and thermoelectric generators that require ultra-low-power operation, but also can be used in any system where high efficiency, low quiescent current, high-side FET drive capability, small design size, and low cost are important. Application Field of LTC3122EDE#PBFThe LTC3122EDE#PBF is a dual-output, low-power, synchronous buck converter designed with an operating voltage range from 1.8V to 5.5V. It is ideal for powering devices that require a wide range of regulated fixed output voltages, including logic, memory, digital signal processing and microcontroller circuits.The device is an excellent choice for powering sensors, transceivers and battery-based applications, where ultra-low-power operation is necessary. The device features high efficiency operation over a wide input and output voltage range, and can operate from 2 MHz up to 500 KHz with very low operating power levels. Also, the LTC3122EDE#PBF provides high-side N-MOSFET drive, making it especially suited for use in energy harvesting applications. Other application fields include wearable electronics, portable medical devices, handheld and battery powered products, and consumer electronics.Working Principle of LTC3122EDE#PBFThe LTC3122EDE#PBF combines low-voltage operation with high-density, high-efficiency switching power conversion. This allows for very low power operation when the load is light, and also allows the device to maintain high efficiency when the load is heavy.The device can be operated as a buck converter, working in either step-down or step-up mode, as well as a boost-buck topology, which can be used to obtaining high efficiency combined with low ripple.The device operates at a switching frequency of up to 2 MHz, depending on the output voltage. This allows for use of very small external components, including 0.47 μH inductor and 4.7 μF output capacitor size. The choice of frequency is automatically taken into account by the device, and it also features thermal shutdown, overvoltage protection and an overcurrent limit. These features allow the device to be designed without requiring additional components.

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