LT3970EDDB-5#TRMPBF

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LT3970EDDB is designed to work as a type of DC-DC switching regulator, which belongs to the PMIC – Voltage Regulators family. This device is a dual-channel synchronous step-down DC/DC regulator, being capable of delivering up to 2.5A of output current. This versatile device can operate from 3V to 22V input voltage range, and it is suitable for applications in 4V to 18V outputs.

The LT3970EDDB-5#TRMPBF has three operating modes: Pulse-width Modulation (PWM), Pulse-Frequency Modulation (PFM) and Forced PWM. All of them are implemented in a fixed-frequency, current mode system. In addition, it includes an Enable pin; when this pin is held logic low, the output will be shut down. The available switching frequency ranges from 100 kHz to600 kHz.

In order to ensure stability and minimize the external components needed, the LT3970EDDB-5#TRMPBF incorporates two Fixed Frequency Oscillators, one for each channel, and it also provides two VCC pins. This type of device is also able to resist voltage shocks up to 40V.

Regarding the protection features, the LT3970EDDB can operate as highly efficient, low Iq, or high power density converter. It has overvoltage, current limit, thermal shutdown, UVlo, and fast transient response features. Besides, a built-in restarting mode for the control loop guarantees a no-load startup, avoiding stall complaints.

The LT3970EDDB-5#TRMPBF application fields include networking, communications, hybrid electric vehicles, aerospace and industrial sectors among other. This device is a highly efficient switching regulator that can be used to obtain adjustable current outputs from very low voltage / current sources. Its circuit implementation permits well-regulated and steady power supplies, with aquisition of power whenever that is needed, reducing system power costs.

On the other hand, LT3970EDDB-5#TRMPBF’s working principle is mainly based on its two outputs that ensure the current balance. This type of regulator circuits automatically steps down input voltages to required levels, by switching a set frequency. Thus, energy efficiency improves and components of load circuit and voltage drop across them decrease.

Both the outputs of this device can operate in variable or fixed-frequency modes. The main working principle is that the variable-frequency mode turns on and off the transistors using the information of voltage and current flow, while in the fixed-frequency mode, the device is driven at constant frequency to reduce the conducted and radiated regulator noise.

Therefore, LT3970EDDB-5#TRMPBF is an ideal regulator for many applications due to its flexibility and many features, such as low noise and high power density, low quiescent current, high efficiency, and fast internal loop compensation. It is an excellent choice for projects needing a reliable, efficient and low noise power solution.

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