LTC3633AEFE-3#TRPBF

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The LTC3633AEFE-3#TRPBF is a member of Linear Technology’s Power System Management (PSM) family of products. It is a dedicated, multi-phase synchronous DC-DC buck integrated circuit with integrated power switch and two output current sense amplifiers. The LTC3633AEFE-3#TRPBF is specifically design to reduce board space and reduce current sensing noise.

The LTC3633AEFE-3#TRPBF application field is ideal for providing intermediate power supplies in portable applications and can serve as a multi-phase regulator for multiple output voltages, such as in a computing system. With its wide input voltage range, it can be used as a standalone regulator that can provide a wide range of outputs from 1.0v to 5V.

LTC3633AEFE-3#TRPBF is designed to operate as a synchronous buck switching regulator with a 2 phase configuration. The on-chip, high-side and low-side power switch of LTC3633AEFE-3#TRPBF provides a high efficiency at low output current. A current-mode, fixed frequency control scheme with external loop compensation and cycle-by-cycle current limit provides fast transient response and excellent line and load regulation.

The LTC3633AEFE-3#TRPBF has two independent, accurate current sense amplifiers that allow for tight current sharing and temperature tracking between phases. An adaptive peak current sensing technique is employed to reduce the minimum on time required to achieve fast load step response. Output voltages can be set with a single resistor or by using external reference voltage. It also includes power good flag and output enable pins.

The LTC3633AEFE-3#TRPBF also offers a low-power design. Its current-mode operation, combined with an on-chip linear regulator, allows for the high efficiency to be maintained even during light load operation. The integrated power switches reduce conduction losses and the spread spectrum modulation reduces EMI filter.

The LTC3633AEFE-3#TRPBF is ideal for applications such as notebook PCs, PDAs, handheld terminals, and other space-limited, low-power through-hole applications. It also provides a ruggedized package for surface mount applications.

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