LTC3646IDE#TRPBF

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The LTC3646IDE#TRPBF is a DC/DC Switching Regulator that belongs to the family of voltage regulators called PMIC (Power Management Integrated Circuits). This voltage regulator has several unique features, such as its ability to provide very low quiescent current, very wide operating temperature range, low noise and 100% duty cycle operation.

The LTC3646IDE#TRPBF is mainly used in various power-sensitive applications like embedded systems, personal electronics and automotive, where low power consumption and high efficiency are must have qualities. They can also be used in mobile applications where low power consumption and small form factor are needed.

The LTC3646IDE#TRPBF is based on the industry standard charge pump switching regulator topology, which provides high efficiency over wide input voltage and output current ranges. The circuit also features a built-in current limiter and foldback current limiting. The switching frequency is fixed at 2.2MHz, with output current capability up to 1A and efficiency up to 92% depending on the configuration.

This device is designed to work in the form of a ‘step-down’ or ‘step-up’ type regulator. The chip utilizes a voltage reference and control loop circuitry, a fixed frequency oscillator and a low on-resistance power switch to regulate the output voltage. In a step-down configuration, the output voltage is regulated to a certain level below the input voltage, while in a step-up configuration it is regulated to a certain level above the input voltage. The reference voltage and current limiting are user-programmable.

The LTC3646IDE#TRPBF is capable of delivering up to 1A of continuous output current and has a maximum output voltage of up to 30V. The device also offers high power conversion efficiency and very low quiescent current of only 10µA. The device features a shutdown input pin which provides a shut-down logic interface.

In addition, the LTC3646IDE#TRPBF is equipped with an optional synchronous rectifier and max/min voltage monitor functions. The synchronous rectifier feature increases efficiency and reduces switching loss. The max/min voltage monitor monitors the output voltage level and sets the max/min thresholds for user specified conditions. These features make the device suitable for use in various power-sensitive applications.

The LTC3646IDE#TRPBF is housed in a small 4x4mm QFN or TDFN package, suitable for applications where board space is at a premium. The device is designed to operate over a wide temperature range of -40°C to +85°C, making it suitable for use in a wide range of environmental conditions. The device also features excellent EMI performance.

In conclusion, the LTC3646IDE#TRPBF is a high-efficiency, low quiescent current, 100% duty cycle voltage regulator. The device can be configured to operate in either a step-down or step-up configuration and features onboard current limiter circuitry and automatic pulse-by-pulse current limiting. The device is optimized for use in various applications like embedded systems, personal electronics and automotive, where very low power consumption and high efficiency are required. This USB-compatible voltage regulator is packed in a small 4x4mm QFN or TDFN package, making it suitable for applications where board space is at a premium and offers excellent EMI performance.

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