LTC3612EFE#TRPBF

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LTC3612EFE#TRPBF is a dual-channel DC/DC synchronous buck converter, which is widely seen in PMIC – Voltage Regulators – DC DC Switching Regulators. It’s featured by its small size, high efficiency, low ripple, and fast transient response.

The LTC3612EFE#TRPBF is computer-controlled and suitable for a variety of digital ASICs, FPGAs, and DSPs. The chip integrates a low-noise voltage regulator together with two current mode synchronous step-down buck regulators outputting 2A and 1A respectively. It has independent power supplies for the two channel outputs, and are adjustable via external resistors for each channel. The two channels are synchronous with no external components required. Its output voltage is adjustable between 0.59V and 5V. The device has an internal 0.8V regulator to supply the logic.

The chip is designed to operate with both solid-state and ceramic capacitors. It can operate up to a switching frequency of 600kHz and 1.2MHz. Its input voltage range is up to 5.5V and is compatible with Li-Ion POL batteries. The device is packaged in a space-saving 5mm x 7mm QFN package.

In terms of its working principle, the LTC3612EFE#TRPBF working, the two synchronous buck channels generate two outputs, which are divided by a reference voltage for each output, thus yielding two channels. In each channel the output voltage is set by varying the duty cycle of the on-time. When the duty cycle is low, the output voltage is low and vice versa. The device is current mode controlled and the on-time is fully limited to keep the device out of peak current mode operation. This voltage and current regulation is accomplished by an error amplifier that receives a reference voltage as input. The error amplifier compares this voltage to the feedback voltage set at the output. The error amplifier then adjusts the duty cycle of the switch required to maintain the desired output voltage. Additionally the device features programmable soft-start which eliminates inrush current during start-up.

The LTC3612EFE#TRPBF is ideal for portable computer applications in which dual-output voltage regulation is necessary. It is also suitable for FPGAs/ASICs, Portable phones, and Portable DCMs, as well as Display, Medical, Automotive, and Industrial applications.

The LTC3612EFE#TRPBF is a versatile and efficient dual-channel DC/DC synchronous buck converter, which has many advantages in PMIC – Voltage Regulators – DC DC Switching Regulators. With its small size, high efficiency, low ripple, and fast transient response, the LTC3612EFE#TRPBF meets the requirements of many applications.

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