LTC7862EUFD#PBF

Voltage - Supply (Vcc/Vdd):	4 V ~ 140 V
Supplier Device Package:	20-QFN (5x4)
Package / Case:	20-WFQFN Exposed Pad
Operating Temperature:	-40°C ~ 125°C (TJ)
Control Features:	Current Limit, Enable, Frequency Control, Ramp, Soft Start
Serial Interfaces:	--
Clock Sync:	Yes
Synchronous Rectifier:	Yes
Duty Cycle (Max):	100%
Frequency - Switching:	50kHz ~ 900kHz
Series:	--
Output Phases:	1
Number of Outputs:	1
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Output Type:	Transistor Driver
Part Status:	Active
Packaging:	Bulk

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Introduction to LTC7862EUFD#PBF

The LTC7862EUFD#PBF is an integrated circuit (IC) designed to mobile and cellular applications. The IC is intended to be used in current-mode switching regulator circuits with external MOSFETs. It can operate as a buck, boost, SEPIC and inverting switches, as well as a battery charger. Popular applications include power supply circuits, variable output supplies, DC/DC converters, and adaptive charging applications.

Advantages of LTC7862EUFD#PBF

The LTC7862EUFD#PBF provides several advantages that make it well-suited for DC/DC conversion, battery charging, and other related applications. First, its small footprint makes it easier to work with in a variety of form factors. This makes it ideal for mobile and cellular applications, such as cell phones, where a compact size is essential. Second, its low power consumption means that it is also an economical choice for many applications. This makes it an effective power-saving tool in battery-powered systems and products. Third, its external MOSFET switching capability enables fine-tuning of the regulator’s operation in order to maximize efficiency. Additionally, the device supports a wide input voltage range, up to 30V, a low quiescent current of 55uA and a wide operating temperature range of -40°C to Derates°C.

Application field

Since the LTC7862EUFD#PBF is well-suited for power supply, variable output supplies, DC/DC converters, and adaptive charging applications, it can be used in many products and devices.This includes AC/DC adapters, DC/DC step up, step down and inverting converters, and automotive applications. Additionally, the device is suitable for industrial and medical applications. The device can also be used for power cordless tools, battery chargers and many others. It is ideal for products where small form factor and low quiescent current are important.

Working principle

The LTC7862EUFD#PBF is a current-mode switching regulator that uses an external MOSFET for switching. The device is designed to provide a precisely regulated voltage needed for powering various applications. It receives an input voltage, either supplied from an AC/DC adapter or a battery, and it regulates this voltage to meet the needs of the application.The device contains an internal oscillator which generates a low frequency signal. This signal is used to switch the external MOSFETs on and off. As the MOSFETs open and close, power is transferred from the input to the output.The output voltage is set by an error amplifier, which senses the difference between the actual voltage and the desired voltage, and adjusts the output voltage as needed. The device can also be used to charge a battery using a trickle-charge configuration or a step-down configuration for constant voltage charging.

Conclusion

The LTC7862EUFD#PBF is a high performance integrated circuit designed for mobile and cellular applications. It is suitable for powering AC/DC adapters, DC/DC converters, automotive applications and industrial and medical products. The device is also capable of charging batteries using a step-down charging configuration. The device is small, has low power consumption and supports a wide input voltage range, making it an ideal choice for many applications. Its external MOSFET switching capability also enables fine-tuning of the regulator’s operation for enhanced efficiency. All of this makes the LTC7862EUFD#PBF a great choice for DC/DC conversion, battery charging, and other related applications.

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