Description:The ISL91108 is a highly-integrated buck-boost switching regulator that accepts input voltages either above or below the regulated output voltage. Unlike other buck-boost regulators, this regulator automatically transitions between operating modes without significant output disturbance.This device is capable of delivering up to 2.7A of burst current (PVIN = 3V, VOUT = 3.3V), and provides excellent efficiency due to its fully synchronous 4-switch architecture. No load quiescent current of only 27.5µA also op
A good PCB layout for the ISL91108IIAZ-T involves keeping the input and output capacitors close to the device, using a solid ground plane, and minimizing the length of the traces between the device and the capacitors. Additionally, it's recommended to use a 4-layer PCB with a dedicated power plane and a dedicated ground plane.
To ensure the stability of the output voltage, it's essential to choose the right output capacitor value and type. A minimum capacitance of 10uF is recommended, and the capacitor should have a low ESR (Equivalent Series Resistance) to minimize voltage ripple. Additionally, the output voltage can be stabilized by adding a small ceramic capacitor (e.g., 1uF) in parallel with the main output capacitor.
The ISL91108IIAZ-T can handle a maximum input voltage of 5.5V. Exceeding this voltage may damage the device. It's essential to ensure that the input voltage remains within the recommended operating range to ensure the device's reliability and performance.
The power dissipation of the ISL91108IIAZ-T can be calculated using the following formula: Pd = (Vin - Vout) x Iout, where Pd is the power dissipation, Vin is the input voltage, Vout is the output voltage, and Iout is the output current. It's essential to ensure that the device is operated within its recommended power dissipation rating to prevent overheating and ensure reliability.
The EN (Enable) pin on the ISL91108IIAZ-T is used to enable or disable the device. When the EN pin is pulled high (logic level 1), the device is enabled, and when it's pulled low (logic level 0), the device is disabled. This pin can be used to implement power-saving modes or to shut down the device when not in use.
Trust Checks
This model has been built in collaboration with the manufacturer.
Manufacturer Collaborated
This model has been verified by system checks.
System Verified
This model has been reviewed by community users.
Community Approved
Sponsored
ISL91108IIAZ-T Overview
Use the download button to access the ISL91108IIAZ-T schematic symbol, PCB footprint, and 3D model.
To find more CAD model downloads similar to this part, try a partial part number search, like ISL91,
or try a keyword search, such as Switching Regulator or Controllers
