ROHM recommends a thermal pad on the bottom of the package, connected to a large copper area on the PCB to dissipate heat efficiently. A minimum of 2oz copper thickness is recommended, and the thermal pad should be connected to a ground plane or a dedicated heat sink.
To ensure stable operation with a high-ESR output capacitor, ROHM recommends adding a 1nF to 10nF ceramic capacitor in parallel with the output capacitor to improve the phase margin. Additionally, the output capacitor's ESR should be less than 100mΩ to prevent oscillation.
The maximum allowed voltage on the EN pin is 6V, which is higher than the recommended operating voltage of 5V. However, it's essential to ensure that the EN pin voltage does not exceed the input voltage (VIN) to prevent damage to the device.
While the BD4728G-TR is rated for operation up to 125°C, ROHM recommends derating the output current and power dissipation to ensure reliable operation in high-temperature environments. Consult the datasheet and ROHM's application notes for specific guidelines.
To calculate the power dissipation, use the following formula: Pd = (VIN - VOUT) x IOUT + (VIN x Iq), where Iq is the quiescent current. Ensure that the calculated power dissipation does not exceed the maximum allowed value specified in the datasheet.
Trust Checks
This model has been provided by community users.
Community Provided
This model has been verified by system checks.
System Verified
This model has been reviewed by community users.
Community Approved
Sponsored
BD4728G-TR Overview
Use the download button to access the BD4728G-TR schematic symbol, PCB footprint, and 3D model.
To find more CAD model downloads similar to this part, try a partial part number search, like BD472,
or try a keyword search, such as Power Management Circuits
