Applications Information

Output-Capacitor Selection and Regulator Stability

For stable operation over the full temperature range, with fixed 3.3V and 5.0V output voltages, use a low-ESR 2.2µF

capacitor. For resistor-programmed output voltages, a 10µF low-ESR ceramic capacitor is recommended for stable

operation. Use larger output-capacitor values (such as 22µF) to reduce noise while improving load-transient response

and power-supply rejection. Some ceramic dielectrics exhibit large capacitance and ESR variations with temperature. To

improve power-supply rejection and transient response, use a capacitor larger than the minimum 1µF capacitor between

IN and GND.

Exposed Pad

The MAX25210 features an exposed thermal pad on its underside that should be used as a heatsink. This pad lowers the

package’s thermal resistance by providing a direct heat-conduction path from the die to the PCB. Connect the exposed

pad and GND to the system ground using a large pad or ground plane, or multiple vias to the ground plane layer.

MAX25210

Automotive Ultra Low Quiescent Current Linear

Regulator Family

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