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STEVAL-ISA046V1 Arkusz danych(PDF) 1 Page - STMicroelectronics |
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STEVAL-ISA046V1 Arkusz danych(HTML) 1 Page - STMicroelectronics |
1 / 4 page Data Brief For further information contact your local STMicroelectronics sales office. March 2008 Rev 1 1/4 4 STEVAL-ISA046V1 2 A / 1.2 V high-efficiency synchronous buck converter evaluation board based on the ST1S09 with inhibit Features ■ Input voltage range: 2.7 V to 5.5 V ■ Output voltage: 1.2 V ■ Max Iout: 2 A ■ High internal switching frequency: 1.5 MHz ■ Inhibit function ■ Short-circuit protection ■ ST1S09I in the DFN6 3x3 package Description This evaluation board, based on the ST1S09I family of synchronous step-down DC-DC converters, is optimized for powering all low- voltage applications and, generally, replaces high current linear solutions when power dissipation may cause high heating of the application environment. It provides up to 2 A over an input voltage range of 2.7 V to 5.5 V. A high 1.5 MHz switching frequency allows the use of tiny surface-mount components and in addition to the resistor divider to set the output voltage value, an inductor and two capacitors are required. The ST1S09I features an inhibit function. A low output ripple is guaranteed by the current mode PWM topology and by the use of low ESR surface-mount ceramic capacitors. The device is thermally protected and current limited to prevent damage due to accidental short- circuit. The ST1S09 family is available in the DFN6 3x3 package. STEVAL-ISA046V1 www.st.com |
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