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SI-8090JD 데이터시트(PDF) 1 Page - Allegro MicroSystems |
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SI-8090JD 데이터시트(HTML) 1 Page - Allegro MicroSystems |
1 / 10 page Designed to meet high-current requirements at high efficiency in industrial and consumer applications; embedded core, memory, or logic supplies; TVs, VCRs, and office or telecommunications equipment, the SI-8090JD dc/dc step-down (buck) converter offers a constant 125 kHz switching frequency essential for low EMI noise. The npn switch is included on the die along with the oscillator, control, and logic circuitry requiring only four external components for a regulated 9.0 V output at up to 1.5 A. . A wide input voltage range and integrated thermal and overcurrent protection enhance overall system reliability. Reference accuracy and excellent temperature characteristics are provided. An output-enable input gives the designer complete control over power up, standby, or power down. This device is supplied in a 5-lead surface-mount plastic package (TO-263) with ground tab to provide a low-resistance path for maximum heat dissipation. A similar device in a flange-mounted (TO-220-style) high-power package is the SI-8090JF. FEATURES ■ 11 V to 40 V Input Range ■ 1.5 A Output Current at 9.0 V ■ 2% Output Voltage Tolerance ■ Foldback Current Limiting ■ Constant 125 kHz Switching Frequency ■ 200 µA Maximum Standby Current ■ Soft Start Prevents Supply Voltage Dip ■ Remote Voltage Sensing ■ Exposed Pad for Superior Heat Dissipation ■ Thermal Protection APPLICATIONS ■ TVs, VCRs, Electronic Games ■ Embedded Core, Memory, or Logic Supplies ■ Printers and Other Office Equipment ■ Industrial Machinery ■ Telecommunications Equipment Step-Down to 9.0 V, 1.5 A, DC/DC Converter Always order by complete part number, e.g., SI-8090JD-TL , where “-TL” indicates tape and reel. ABSOLUTE MAXIMUM RATINGS Input Voltage, V I . . . . . . . . . . . . . 43 V Output Current, I O . . . . . . . . . . . 1.5 A* Enable Input Voltage, V OE . . . . . . . . . . . 6 V Junction Temperature, T J . . . . +125°C Storage Temperature Range, T S . . . . . . . . . . . . -40°C to +125°C * Output current rating is limited by input voltage, duty cycle, and ambient tempera- ture. Under any set of conditions, do not exceed a junction temperature of +125°C. SI-8090JD Sanken Power Devices from Allegro MicroSystems Switching Regulators |
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