LTC3542IDC#TRPBF

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The Linear Technology LTC3542IDC#TRPBF is a high efficiency synchronous boost regulator featuring current mode control. It operates from 2.7V to 5.5V input and provides up to 5A output current. The part is suitable for powering a wide range of supplies and loads with an adjustable output from 2.5V to 5.5V. In addition to that, the device is also capable of providing high efficient charging of 3 to 5 cell Li-Ion battery systems.

Application Field:

The LTC3542IDC#TRPBF is a great fit for extreme environment conditions. It is capable of being used in -40°C to 85°C temperature ranges and can even handle power cycling operations with high transient current capabilities. The device has wide input voltage range and optimal efficiency over the entire input range. It is a great fit for power supplies in various applications such as avionics, telecom, automotive, industrial and consumer. The device is also capable of providing low noise, low ripple and high PSRR, which makes it a great choice for sensitive loads.

Working Principle:

The LTC3542IDC#TRPBF utilizes an internal synchronous, peak current-mode control. This high efficiency capability allows for operation up to 95% and can support up to 5A output current. The part features a forced PWM-ramp mode, allowing for a constant output current over a wide range of load conditions. The ramp control mode allows the device to track load current while simultaneously providing good voltage regulation. The device also features adaptive on-time control, where the output frequency and the ramp amplitude are optimized in order to reduce switching losses and provide smooth current modulation. The on-time control also limits the valley current during light load conditions for an efficient operation.

Safety features such as adjustable hiccup mode, over temperature protection, under voltage lockout and over current protection are also integrated into the part for reliable operations in all conditions. The device also has a unique over current protection (OCP) circuit, which can sense current in the power MOSFETs and provide accurate current protection, even in the event of a large load change.

In summary, the Linear Technology LTC3542IDC#TRPBF is a high efficiency, synchronous boost regulator capable of operating from 2.7V to 5.5V input and providing up to 5A output current with features such as adjustable output voltage, low ripple, high PSRR, low noise and adaptive on-time control. The device is suitable for powering a wide range of supplies and loads and is capable of providing efficient charging of 3-5 cell Li-Ion battery systems. Additionally, safety features such as adjustable hiccup mode, over temperature protection, under voltage lockout and over current protection are also integrated for reliable operations. The LTC3542IDC#TRPBF is thus a great choice for powering high performance power supplies in extreme environmental conditions.

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