OVER CURRENT; OVER LOAD; OVER VOLTAGE; OVER TEMPERATURE
Seated Height-Max:
4.05 mm
Supply Current-Max (Isup):
50 mA
Surface Mount:
YES
Switcher Configuration:
BUCK
Switching Frequency-Max:
1067 kHz
Technology:
HYBRID
Terminal Finish:
Nickel/Palladium/Gold (Ni/Pd/Au)
Terminal Form:
NO LEAD
Terminal Position:
UNSPECIFIED
Total Power Output-Max:
137.5 W
Trim/Adjustable Output:
YES
Warm-up Time:
5 s
Width:
17 mm
ISL8270MBIRZ Frequently Asked Questions (FAQs)
Renesas provides a recommended PCB layout in the ISL8270MBIRZ evaluation board user manual, which includes guidelines for thermal vias, copper pours, and component placement to minimize thermal resistance and ensure optimal performance.
To optimize output voltage accuracy and stability, ensure that the input voltage is within the recommended range, use a high-quality output capacitor with low ESR, and minimize noise and ripple on the input and output lines. Additionally, consider using a voltage reference IC with high accuracy and low noise, such as the Renesas ISL21090.
The maximum output current capability of the ISL8270MBIRZ is 20A, but this can be limited by the thermal performance of the PCB and the ambient temperature. It's essential to ensure that the device is properly cooled and that the maximum junction temperature is not exceeded.
The ISL8270MBIRZ has built-in overcurrent protection (OCP) and overvoltage protection (OVP) features. However, it's still recommended to add external protection components, such as fuses or TVS diodes, to ensure that the device is protected from extreme overcurrent and overvoltage conditions.
The recommended input capacitor value is 10uF to 22uF, with an X7R or X5R dielectric type. This ensures that the input voltage is stable and that the device can handle the input voltage ripple and noise.
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ISL8270MBIRZ Overview
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