ISL78227ARZ-T7A

Voltage - Supply (Vcc/Vdd):	5 V ~ 55 V
Supplier Device Package:	32-QFN (5x5)
Package / Case:	32-VFQFN Exposed Pad
Operating Temperature:	-40°C ~ 125°C (TJ)
Control Features:	Dead Time Control, Enable, Frequency Control, Phase Control, Power Good, Soft Start, Tracking
Serial Interfaces:	--
Clock Sync:	Yes
Synchronous Rectifier:	Yes
Duty Cycle (Max):	89%
Frequency - Switching:	50kHz ~ 1.1MHz
Series:	Automotive, AEC-Q100
Output Phases:	2
Number of Outputs:	2
Topology:	Boost
Output Configuration:	Positive
Function:	Step-Up
Output Type:	Transistor Driver
Part Status:	Active
Packaging:	Tape & Reel (TR)

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

ISL78227ARZ-T7A Application Field and Working Principle

ISL78227ARZ-T7A is a synchronous buck-boost voltage regulator that belongs to a category of pulse width modulation semiconductor components known as DC-DC Switching Controllers. This multi-mode device is designed to deliver superior efficiency, simplified board design and exceptional dynamic performance. It is particularly suitable for automotive, battery-operated and always-on applications.The ISL78227ARZ-T7A is based on advanced mixed-signal processing technology, allowing it to accurately regulate output voltage while reducing component count and complexity. The regulator is designed to automatically adapt to the desired output voltage, from 0.9V to 9V. Its wide input voltage operating range allows it to efficiently handle battery-powered inputs from 1.8V to 11V.The ISL78227ARZ-T7A is a current mode controller, which means it works by sensing the output current of the input power stage and adjusting its switching frequency in order to maintain the desired voltage regulation. This technique requires a minimum load of 5mA, but provides improved transient responses and better output voltage control compared to voltage mode alternatives.The ISL78227ARZ-T7A features an integrated 200mV voltage dropped high-side MOSFET driver with thermal protection, up to 4A peak bootstrap current source and a 4.5ns driver enable/disable period. These features reduce component count and enable reliable operation at very high switching frequencies, up to 4MHz.The ISL78227ARZ-T7A can be configured in either continuous or discontinuous conduction mode to support Synchronous Buck or Buck-Boost topologies. In Synchronous Buck applications, it can operate in both switching at current limit and pulse-skip mode with an adjustable current limit and pulse skip rate of up to 300KHz.To optimize its efficiency, the regulator features a thermal shutdown pin and an operating temperature range from -40°C to 125°C. It also includes an on-board low battery monitor with selectable voltage thresholds, integrated softstart and selectable current sense resistor.The ISL78227ARZ-T7A is suitable for a variety of automotive, industrial, battery-operated and always-on applications that require superior efficiency, dynamic performance and board design simplicity. Its major features include integrated high-side MOSFET driver, current mode control, adjustable current limit and pulse skip rate, selectable operating temperature range and on-board low battery monitor.

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

Part Number	Manufacturer	Price	Quantity	Description