ISL78200AVEZ-T

Voltage - Output (Min/Fixed):	0.8V
Base Part Number:	ISL78200
Supplier Device Package:	20-HTSSOP
Package / Case:	20-TSSOP (0.173", 4.40mm Width) Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 105°C (TA)
Synchronous Rectifier:	Both
Frequency - Switching:	200kHz ~ 2.2MHz
Current - Output:	2.5A
Voltage - Output (Max):	38V
Series:	Automotive, AEC-Q100
Voltage - Input (Max):	40V
Voltage - Input (Min):	3V
Number of Outputs:	1
Output Type:	Adjustable
Topology:	Buck, Boost, Buck-Boost
Output Configuration:	Positive
Function:	Step-Up, Step-Down, Step-Up/Step-Down
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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Introduction

The ISL78200AVEZ-T is an integrated synchronous Buck DC/DC switching regulator, which is a voltage regulator chip specifically designed to provide efficient conversion of DC power. It has an integrated N-Channel MOSFET, which allows it to step down voltage with high efficiency, while the integrated MOSFET switch provides a low-noise switching frequency of up to 1.5 MHz. The ISL78200AVEZ-T is built on a tiny 3 x 3 mm thermally enhanced Plastic QFN package.

Application Field

The ISL78200AVEZ-T chip is crucial in electronics that require efficient and reliable voltage regulation, as it has been designed to minimize external component count, reduce power consumption and reduce system cost. These features make it suitable for a wide range of applications, including mobile phones, tablets, IoT products, digital cameras, handsets, wearables, and more.The advantages of using the ISL78200AVEZ-T include its low quiescent current and wide input voltage, which make it ideal for applications in a battery powered environment. With its very low standby current of 0.7 µA, it ensures that the device consumes less power when the system is not operational and provides more power for the device when needed.In addition, its “burst mode” capability allows the system to reduce output power consumption, which can be completed by entering a standby or sleep mode. This helps to drastically reduce battery power consumption, extending the battery life and therefore reducing overall system power consumption.

Design Features

The small size and high efficiency of the ISL78200AVEZ-T make it a great choice for many designs. Its low quiescent current and wide input voltage range makes it ideal for applications in battery powered environments. In addition, it offers a wide output voltage range of 0.8 to 5.5 V, and can deliver up to 2.25A of output current, making it suitable for Power-over-Ethernet PoE applications.The chip also offers protection against over-current, over-temperature, and reverse current protection, as well as an adjustable soft-start time and output internal voltage offset for better load regulation. It also comes with a choice of a built-in voltage detector (VOUT_COMP) or an external voltage detector for advanced monitoring of output voltage.

Working Principle

The ISL78200AVEZ-T is an integrated synchronous Buck DC-DC switching regulator, which is designed to efficiently convert input DC power into a lower DC voltage while minimising the number of external components needed. This is done by the integrated N-Channel MOSFET switch and voltage controller, which operates at a switching frequency of up to 1.5 MHz.The integrated switching feature enables the chip to rapidly transfer power from the input source to the output source. During operation, the MOSFET switch can be turned “on” or “off”, depending on the input and output voltage, allowing the chip to maintain a high efficiency while operating. When the switch turns “on”, a current flows from the input source to the output source, and the output voltage is proportional to the input voltage. When the switch turns “off”, the circuit is opened and no current flows, which helps the chip to keep the output voltage stable. This is the basic principle of operation of the ISL78200AVEZ-T.

Conclusion

The ISL78200AVEZ-T is an integrated synchronous Buck DC/DC switching regulator, designed for efficient and reliable voltage regulation in a wide range of applications. With its high efficiency, small size, wide input voltage and low standby current, it is an ideal solution for applications requiring battery-operated environments and high level of power savings. The ISL78200AVEZ-T offers an adjustable soft-start time, over-current protection, reverse current protection and output voltage offset, making it suitable for a variety of designs.

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