Description:The ISL80138 is a high voltage, adjustable VOUT low quiescent current linear regulator ideally suited for “always-on” and “keep alive” applications. The ISL80138 operates from an input voltage of +6V to +40V under normal operating conditions and consumes only 18µA of quiescent current at no load. The ISL80138 features an EN pin that can be used to put the device into a low-quiescent current shutdown mode where it draws only 2µA of supply current. The device features over-temperature shutdown and current lim
SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH
Packing Method:
TUBE
Peak Reflow Temperature (Cel):
260
Regulator Type:
ADJUSTABLE POSITIVE SINGLE OUTPUT LDO REGULATOR
Seated Height-Max:
1.2 mm
Surface Mount:
YES
Terminal Finish:
Matte Tin (Sn) - annealed
Terminal Form:
GULL WING
Terminal Pitch:
0.65 mm
Terminal Position:
DUAL
Time@Peak Reflow Temperature-Max (s):
30
Width:
4.4 mm
ISL80138IVEAJZ Frequently Asked Questions (FAQs)
Renesas provides a recommended PCB layout guide in their application note AN1995, which includes guidelines for thermal vias, copper pours, and component placement to minimize thermal resistance and ensure reliable operation.
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 the distance between the output capacitor and the IC. Additionally, consider using a voltage reference capacitor (CREF) to improve output voltage accuracy.
While the datasheet specifies a maximum input voltage of 6.5V, the allowable input voltage ripple depends on the specific application. As a general guideline, Renesas recommends keeping the input voltage ripple below 100mV to ensure reliable operation and minimize the risk of oscillation or instability.
Yes, the ISL80138IVEAJZ is rated for operation up to 125°C junction temperature. However, it's essential to ensure that the device is properly derated for temperature, and the PCB design takes into account thermal management considerations to prevent overheating.
To troubleshoot oscillation or instability issues, check the input voltage, output capacitor, and PCB layout for any potential issues. Ensure that the input voltage is within the recommended range, the output capacitor is of high quality and properly sized, and the PCB layout follows the recommended guidelines. Additionally, consider using a scope to measure the output voltage and input current to identify any signs of oscillation or instability.
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ISL80138IVEAJZ Overview
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