Allegro provides a recommended PCB layout guide in their application note AN296040, which includes guidelines for trace routing, component placement, and thermal management to ensure optimal performance and minimize noise.
The thermal shutdown feature is designed to protect the device from overheating. When the device exceeds the thermal shutdown threshold, it will shut down until the temperature drops below the hysteresis point. To handle this feature, ensure proper thermal design, use a heat sink if necessary, and monitor the device temperature to prevent overheating.
The recommended input capacitor value is 10uF to 22uF, with a voltage rating of 25V or higher. A low-ESR ceramic capacitor, such as X5R or X7R, is recommended to minimize noise and ensure stable operation.
The output voltage can be configured using the VREF pin and an external resistor divider network. The VREF pin provides a 2.5V reference voltage, and the output voltage can be set by dividing this voltage using resistors R1 and R2, according to the formula: VOUT = 2.5V x (R1 + R2) / R2.
The maximum allowed voltage on the enable pin is 5.5V. Exceeding this voltage may damage the device. Ensure that the enable pin is driven by a logic signal with a voltage level compatible with the device's enable pin voltage rating.
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APS12626LLHALT-AAP Overview
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