LTC3499BEMS8#TRPBF

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The LTC3499BEMS8#TRPBF is an efficient and ultra-low profile synchronous step-down DCDC converter with integrated FETs. It is designed to produce up to 15A of continuous output current with a minimum of external components making it an ideal choice for powering a variety of low power applications. The LTC3499BEMS8#TRPBF is housed in a thermally enhanced, 3mm × 3mm, 16-lead QFN package that is well suited for applications where board space is at a premium.

The LTC3499BEMS8#TRPBF’s application field includes a wide range of Power Management Integrated Circuit(PMIC) voltage regulators, DC-DC switching regulators, and general point-of-load (POL) needs. It is well suited for industrial, communication, consumer, computer and networking applications that require high power conversions in an ultra-low profile QFN package. The LTC3499BEMS8#TRPBF was designed to reduce board area, power loss, and system cost.

The working principle of the LTC3499BEMS8#TRPBF is based on the synchronous rectification control scheme to achieve high efficiency. It utilizes a peak current mode control architecture with a fixed frequency oscillator and cycle-by-cycle current limit. It also implements a low value input/output differential voltage feedforward feature that improves light load efficiency. The output voltage can be set with an external resistor divider on the VOUTM pin and is controlled by a pair of 220nA reference current sources connected to the VOUTIN and VOUTM pins.

The LTC3499BEMS8#TRPBF can be used to regulate output voltages to the exact requirements for high power systems. It features wide 4.5V to 24V input voltage range and output voltage adjustable range of 0.6V to VIN. It provides output-voltage margining of 0.4V to 3.6V range. It is also equipped with features such as input under/over voltage lockout, output over-voltage protection and adjustable soft-start. It also offers optimal thermal performance by using PowPow™ technology that incorporates a small MOSFET and boot diode in the same package as the controller IC.

In addition to the power efficient performance and small size, the LTC3499BEMS8#TRPBF also provides other safety and protection features such as input undervoltage protection (UVP) and output overvoltage protection. The UVP provides a reset signal to the logic when the supply voltage is below the UVLO threshold. The output overvoltage protection (OVP) prevents the output overvoltage situation that can be caused by short-circuits on the power lines.

The LTC3499BEMS8#TRPBF is able to operate in a variety of systems and power environments with its wide input voltage range, high efficiency, and high load current capability. Its flat, 3mm x 3mm QFN package provides performance and low-profile solution for applications that require very low board space. It is an ideal choice for powering industrial, communication, consumer, computer, and networking applications that require high power conversions with ultra low-profile packages.

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