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RT8280 データシート(PDF) 7 Page - Richtek Technology Corporation |
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RT8280 データシート(HTML) 7 Page - Richtek Technology Corporation |
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7 / 16 page ![]() RT8280 7 DS8280-02 March 2012 www.richtek.com © Copyright 2012 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. Current Limit vs. Duty Cycle 3.50 3.75 4.00 4.25 4.50 4.75 5.00 5.25 5.50 5.75 6.00 6.25 6.50 0 2040 6080 100 Duty Cycle (%) fSW = 2.2MHz fSW = 400kHz Current Limit vs. Temperature 3.0 3.5 4.0 4.5 5.0 5.5 6.0 -50 -25 0 25 50 75 100 125 Temperature (°C) VIN = 12V, VOUT = 3.3V, fSW = 2.2MHz Switching Frequency vs. Temperature 1.8 1.9 2.0 2.1 2.2 2.3 2.4 -50 -25 0 25 50 75 100 125 Temperature (°C) VIN = 12V, VOUT = 3.3V, RRT = 24k Ω Time (200ns/Div) VOUT (10mV/Div) VSW (5V/Div) VIN = 12V, VOUT = 3.3V lOUT = 3A, fSW = 2.2MHz Output Ripple Voltage IL (2A/Div) Time (100 μs/Div) VOUT (200mV/Div) VIN = 12V, VOUT = 3.3V lOUT = 0A to 3A, fSW = 2.2MHz Load Transient Response IOUT (1A/Div) Time (100 μs/Div) VOUT (200mV/Div) VIN = 12V, VOUT = 3.3V lOUT = 1.5A to 3A, fSW = 2.2MHz Load Transient Response IOUT (1A/Div) |
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