ISL68201IRZ-TK

Voltage - Supply (Vcc/Vdd):	4.5 V ~ 24 V
Supplier Device Package:	24-QFN (4x4)
Package / Case:	24-VFQFN Exposed Pad
Operating Temperature:	-40°C ~ 85°C (TA)
Control Features:	Enable, Power Good
Serial Interfaces:	I²C, PMBus, SMBus
Clock Sync:	No
Synchronous Rectifier:	No
Duty Cycle (Max):	--
Frequency - Switching:	300kHz ~ 1.5MHz
Series:	Rapid Robust Ripple Regulator™ (R4)
Output Phases:	1
Number of Outputs:	1
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Output Type:	PWM Signal
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction to ISL68201IRZ-TK

The ISL68201IRZ-TK (ISL68201) is a family of high efficiency, current mode, synchronous step-down DC/DC switching regulators with integrated high-side and low-side power switches. It is available in a space saving 6mmx6mm TQFN-36 package and provides a highly integrated, complete design solution, eliminating the need for an external transistor, inductor, and bootstrap capacitor (up to 30V output). The ISL68201 is an ideal solution for applications requiring an adjustable constant voltage. It supports 5V to 30V output voltage with FB voltage adjustable down to 0.8V. This step-down controller can deliver up to 2A continuous current, with a maximum peak current of 4A. Additionally, the ISL68201 provides low power standby mode and it also has a heartbeat monitor pin to indicate the current state of the regulator.

Applications of ISL68201IRZ-TK

The ISL68201IRZ-TK is highly suitable for a variety of applications with its incredible design features and aspects. Its main applications include:

• White goods appliances
• Communication equipment
• Industrial and medical equipment
• Backup battery systems
• Power Adapter

The ISL68201 is also an exceptional solution for remotely powered measurement devices, such as those employed for industrial automation, energy management and building security.

Working Principle of ISL68201IRZ-TK

The ISL68201 step-down DC/DC switching regulator enables precise output voltage regulation through its current mode control. It includes high-side/low-side power MOSFET switches with low RDS(on) values. The low-side switch is an N-channel MOSFET and the high-side switch is a P-channel MOSFET with back-to-back body diodes providing electrical isolation between the low-side and the high-side switches. The ISL68201 takes input voltage (VIN) and reduces it to an adjustable set-point of output voltage (VOUT). The VOUT is regulated with an error amplifier connected to the FB pin. A peak current limit circuit monitors the inductor current. The low-side and high-side switches are modulated in a fixed frequency boost converter structure. Overall, the ISL68201 provides high efficiency over a wide range of input voltages and load currents. It does so by integrating independent control loops for peak current limit and output voltage regulation. The ISL68201 is a synchronous step-down controller and it can support up to a 4A peak current and 2A continuous current. The wide range of output voltage (VOUT) allows for a wide range of applications and helps reduce the need for additional parts.

Conclusion

The ISL68201IRZ-TK is a high efficiency, integrated, synchronous step-down DC/DC switching regulator. It provides a complete design solution eliminating the need for external transistors, inductors and bootstrap capacitors (up to 30V output). Its features and applications make it perfect for industrial automation, white goods appliances, communication equipment, medical equipment and more. The ISL68201 is ideal for remotely powered measurement devices due to its wide range of input and output voltages. Its integrated current mode control and low-side/high-side power MOSFET switches provide high efficiency over a wide range of load currents. With these design benefits, the ISL68201 is an ideal solution for a wide variety of applications.

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