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RT8252B Datasheet(PDF) 7 Page - Richtek Technology Corporation |
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RT8252B Datasheet(HTML) 7 Page - Richtek Technology Corporation |
7 / 14 page RT8252B 7 DS8252B-02 March 2011 www.richtek.com Current Limit vs. Duty Cycle 3.0 3.5 4.0 4.5 5.0 5.5 6.0 0 10 203040 5060 7080 Duty Cycle (%) VIN = 4.5V to 23V, VOUT = 3.3V 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 Output Current Limit vs. Input Voltage 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 4 6 8 1012141618 202224 Input Voltage (V) VOUT = 1.2V VOUT = 3.3V (Add Bootstrap Diode) VOUT = 3.3V Load Transient Response Time (100 μs/Div) VIN = 12V, VOUT = 3.3V, IOUT = 0.2A to 2A IOUT (2A/Div) VOUT (50mV/Div) Load Transient Response Time (100 μs/Div) VOUT (50mV/Div) IOUT (2A/Div) VIN = 12V, VOUT = 3.3V, IOUT = 1A to 2A Switching Time (500ns/Div) VIN = 12V, VOUT = 3.3V, IOUT = 2A IL (1A/Div) VOUT (10mV/Div) VSW (10V/Div) |
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