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 ISL91108IINZ-T7A involves keeping the input and output capacitors close to the IC, using a solid ground plane, and minimizing the length of the traces between the IC 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 ISL91108IINZ-T7A can handle a maximum input voltage of 5.5V. Exceeding this voltage may damage the IC. It's essential to ensure that the input voltage is within the recommended range to ensure reliable operation.
The ISL91108IINZ-T7A has a fixed output voltage of 3.3V or 1.8V, depending on the specific part number. However, the output voltage can be adjusted using an external resistor divider network connected to the FB (Feedback) pin. The resistor values can be calculated using the formula provided in the datasheet.
The ISL91108IINZ-T7A can deliver a maximum output current of 800mA. However, the actual output current may be limited by the input voltage, output voltage, and the thermal performance of the IC. It's essential to ensure that the output current is within the recommended range to avoid overheating and ensure reliable operation.
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
ISL91108IINZ-T7A Overview
Use the download button to access the ISL91108IINZ-T7A 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
