Description:The ISL97536 is a synchronous, integrated FET 1A step-down regulator with internal compensation. It operates with an input voltage range from 2. 5V to 6V, which accommodates supplies of 3. 3V, 5V, or a Li-ion battery source. The output can be externally set from 0. 8V to VIN with a resistive divider. The ISL97536 features PWM control with a 1. 4MHz typical switching frequency. The typical no load quiescent current is only 500µA. Additional features include a 100ms Power-On- Reset output,
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 optimal performance.
The output capacitor selection depends on the output voltage, output current, and ripple requirements. Renesas recommends using a low-ESR capacitor with a minimum capacitance of 10uF and a voltage rating of at least 1.5 times the output voltage. The datasheet provides a detailed calculation for selecting the output capacitor.
The maximum junction temperature (Tj) for the ISL97536IUZ-TK is 125°C. However, it's recommended to keep the junction temperature below 100°C for optimal reliability and performance.
While the device can operate up to 125°C, it's essential to consider the derating curves provided in the datasheet to ensure the device operates within its specifications. Additionally, it's recommended to use a heat sink or thermal management system to keep the junction temperature within a safe operating range.
Renesas provides a troubleshooting guide in their application note AN1996, which covers common issues and their solutions. Additionally, it's recommended to review the device's layout, component selection, and PCB design to ensure they meet the recommended guidelines.
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ISL97536IUZ-TK Overview
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