BD8381EFV-E2 Rohm Semiconductor, BD8381EFV-E2 Datasheet - Page 15

• Manufacturer Part Number: BD8381EFV-E2
• Description: LED Drivers AUTOMOTIVE GRADE LED DRIVER
• Manufacturer: Rohm Semiconductor

Specifications of BD8381EFV-E2

• Operating Supply Voltage: 5 V to 30 V
• Maximum Supply Current: 7 mA
• Maximum Power Dissipation: 1.45 W
• Maximum Operating Temperature: + 125 C
• Mounting Style: SMD/SMT
• Package / Case: HTSSOP-28
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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BD8381EFV-M
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For the capacitance we recommend in the range of 0.001 ∼ 0.1uF. For the capacitance less than 0.001uF may cause
overshoot of the output voltage. For the capacitance greater than 0.1uF may cause massive reverse current through the
parasitic elements of the IC and damage the whole device. In case it is necessary to use the capacitance greater than 0.1uF,
ensure to have a reverse current protection diode at the Vcc or a bypass diode placed between the SS-pin and the Vcc.
Soft-start time TSS
TSS = CSSX0.7V / 5uA [s]
The soft-start allows minimization of the coil current as well as the overshoot of the output voltage at the start-up.
The overall characteristic may change by load current, input voltage, output voltage, inductance, load capacitance,
switching frequency, and the PCB layout. We strongly recommend verifying your design by taking the actual
measurements.
Verification of the operation by taking measurements
Setting of the soft-start
CSS: The capacitance at the SS-pin
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2010.10 - Rev.0.11
Technical Note