Description:Qualified for Automotive Applications
◼ Wide Temperature Range: -40 °C to +150 °C
◼ Wide Operating Input Range: 3.0 V to 42 V
◼ Low Quiescent Current: 40 μA (Typ.)
◼ Output Current: 200 mA
◼ High Output Voltage Accuracy: ±2 %
◼ Output Voltage: 3.3 V or 5.0 V (Typ.)
◼ Enable Input (Only W: Includes Enable Input)
◼ Over Current Protection (OCP)
◼ Thermal Shutdown Protection (TSD)
◼ AEC-Q100 Qualified (Note1)
(Note1:Grade1)
ROHM recommends a thermal pad size of at least 2.5mm x 2.5mm, with multiple vias to the bottom layer to ensure efficient heat dissipation. A minimum of 3mm clearance around the device is also recommended to prevent thermal interference.
To ensure stable operation with high input voltage ripple, ROHM recommends using a high-quality input capacitor with low ESR and a sufficient capacitance value. Additionally, a voltage regulator with a high PSRR (Power Supply Rejection Ratio) can help to further reduce the impact of input voltage ripple.
The maximum allowed output current for the BD450U2EFJ-CE2 is 2A. However, it's recommended to derate the output current based on the ambient temperature and the desired junction temperature to ensure reliable operation.
The BD450U2EFJ-CE2 is rated for operation up to 125°C junction temperature. However, ROHM recommends derating the output current and voltage based on the ambient temperature to ensure reliable operation. Consult the datasheet for detailed derating information.
The input capacitor value depends on the input voltage, output current, and desired ripple voltage. ROHM recommends using the following formula: Cin = (Iout x ΔVout) / (fsw x ΔVin), where Cin is the input capacitance, Iout is the output current, ΔVout is the desired output voltage ripple, fsw is the switching frequency, and ΔVin is the input voltage ripple.
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BD450U2EFJ-CE2 Overview
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