LTC3530EDD#TRPBF Integrated Circuits (ICs)

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The LTC3530EDD#TRPBF is a synchronous step-down DC to DC switching regulator which is an addition to Linear Technology’s high-speed switching regulator family. This regulator has a maximum switching frequency of 2.5MHz and is housed in a tiny yet efficient 5mm x 6mm x 0.8mm DFN-12 package. It is suitable for small portable applications such as cell phones, personal digital assistants, MP3 players and other personal electronics.

The LTC3530EDD#TRPBF offers high current and high efficiency operation with a wide output voltage range of 1.2V to 5.25V and an input voltage range of 2.5V to 5.5V. It also has a power sense pin which monitors load current, allowing the device to adjust output voltage with feedback. This feature saves power and simplifies system design.

The high switching frequency of the LTC3530EDD#TRPBF allows for small surface mount inductors and capacitors and reduces external component size. Its unique low power shutdown mode reduces quiescent current to less than 0.1µA. This regulator is thermally enhanced with a built-in thermal shutdown that prevents power dissipation when the device’s maximum temperature is exceeded.

The LTC3530EDD#TRPBF has two synchronizable PWM (pulse width modulation) or pulse frequency modulation (PFM) operating modes for maximum flexibility and power efficiency. In PWM mode, the device works as a buck regulator, where the output voltage is directly proportional to the duty cycle of the PWM signal. In PFM mode, the device works as a switching buck regulator with a constant frequency at less than 100% duty cycle.

The LTC3530EDD#TRPBF provides accurate current limit, short circuit and thermal protection. In the event of an overcurrent, the device shuts down and restores normal operation after the fault is removed. Over temperature protection ensures safe operation by automatically turning off the device if the junction temperature exceeds a specified set point.

The LTC3530EDD#TRPBF is an ideal choice for applications such as smart phones, medical devices, consumer electronics and other portable devices where space and power considerations are a priority. It provides a cost effective alternative to other DC to DC regulators and is ideal for high frequency conversion applications. Boasting high efficiency, wide input voltage range, low standby current and a robust feature set, the LTC3530EDD#TRPBF is sure to be an invaluable part of the switching regulator tool kit.

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