LTC3850IGN-2#PBF

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

The LTC3850IGN-2#PBF is an integrated N-channel feature voltage mode synchronous boost controller operating from input supply voltages of 2.7 V to 5.5 V. It is designed to increase the output voltage via the use of an external N-channel MOSFET and a current sense resistor. The device comes with a power-on reset, internal shutdown, and frequency synchronization capability. The input and output voltages, as well as the inductor current are programmable via an external resistor divider.

The LTC3850IGN-2#PBF is a high-efficiency synchronous Boost DC/DC controller ideal for a wide range of buck-boost applications. Its synchronous regulation control eliminates the need for a sense resistor and minimizes the power loss associated with it. It also offers auto-restart, low shutdown current and thermal shutdown protection. Furthermore, it has a wide frequency adjustment range to ensure best efficiency or lowest output ripple.

The LTC3850IGN-2#PBF finds application in power supplies for intelligent handheld devices, medical/communications systems, digital audio amplifiers, and low dropout regulator post supplies. It is also suitable for powering Energy Efficient Ethernet (EEE) transceivers, switches and routers, as well as for LED backlighting, laptop dock and LED Lighting applications.

The working principle of the LTC3850IGN-2#PBF is based on an inner loop to regulate the current in the inductor, and an outer loop that regulates the voltage at the output of the boost converter. It utilizes a voltage feedback loop with a slope compensation ramp to accurately control the output voltage. Due to its synchronous step-up operation, higher efficiency can be achieved in comparison to traditional linear regulators.

The internal oscillator frequency is set by a single resistor connected to the VFB pin, and the switching frequency can be programmed between 200 kHz and 1 MHz. It is also possible to synchronize the LTC3850IGN-2#PBF to an external clock signal if needed. The current sensing and current limit circuitry protect the circuit from over-current conditions, while the built-in soft-start circuitry allows the converter to start up from full OFF mode as well as ramp up the output smoothly after each power cycle.

In summary, the LTC3850IGN-2#PBF is a versatile high-efficiency DC/DC synchronous boost controller intended for a broad range of applications. The device offers several features to maximize efficiency, minimize output ripple noise, and provide system and device protection against over-current and overload conditions.

The specific data is subject to PDF, and the above content is for reference