Description:24 µA Typical Quiescent Current; Best-in-Class Efficiency; 2.3 V to 5.5 V Input Voltage Range; 0.8 V to 2 V Fixed Output Voltage; 6-Bump WLCSP, 0.4 mm Pitch; Thermal Shutdown and Overload Protection; Low Ripple Light-Load PFM Mode; 6 MHz Fixed-Frequency Operation; Optional Output Discharge; Input Under-Voltage Lockout (UVLO); 600 mA or 1 A Output Current Capability; Forced PWM and External Clock Synchronization; Internal Soft-Start; Best-in-Class Load Transient Response
A good PCB layout for the FAN53601UC182X should prioritize thermal dissipation. Ensure that the device is placed on a solid copper ground plane, and use thermal vias to connect the exposed pad to the ground plane. Keep the PCB layer stack-up symmetrical to minimize thermal resistance.
Choose an input capacitor with a low ESR (Equivalent Series Resistance) and a high ripple current rating. A ceramic capacitor with an X7R or X5R dielectric is recommended. The capacitor value should be at least 10uF, and it's recommended to use a capacitor with a voltage rating of 25V or higher.
The maximum output current of the FAN53601UC182X is 1.8A. However, it's recommended to derate the output current based on the ambient temperature and the PCB's thermal design. Refer to the datasheet's thermal derating curve for more information.
To ensure stability, follow the recommended PCB layout and component placement guidelines. Use a low-ESR output capacitor, and add a 10nF to 100nF ceramic capacitor between the VIN and GND pins to filter out noise. Additionally, ensure that the input voltage is within the recommended range and that the device is properly decoupled.
The EN (Enable) pin is used to turn the device on or off. When the EN pin is pulled high (above 1.4V), the device is enabled, and when it's pulled low (below 0.4V), the device is disabled. You can use the EN pin to implement power sequencing or to turn off the device when it's not in use.
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FAN53601UC182X Overview
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