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C3225X5R0J476M Datasheet(PDF) 4 Page - Richtek Technology Corporation |
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C3225X5R0J476M Datasheet(HTML) 4 Page - Richtek Technology Corporation |
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4 / 15 page  RT7247C 4 DS7247C-02 September 2012 www.richtek.com © Copyright 2012 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. Electrical Characteristics (VIN = 12V, TA = 25 °C, unless otherwise specified) Absolute Maximum Ratings (Note 1) Supply Input Voltage, VIN ----------------------------------------------------------------------------------------- −0.3V to 20V Switch Voltage, SW ------------------------------------------------------------------------------------------------ −0.3V to (VIN + 0.3V) VBOOT − VSW ---------------------------------------------------------------------------------------------------------- −0.3V to 6V Other Pins Voltage ------------------------------------------------------------------------------------------------- −0.3V to 20V Power Dissipation, PD @ TA = 25 °C SOP-8 (Exposed Pad) --------------------------------------------------------------------------------------------- 1.333W Package Thermal Resistance (Note 2) SOP-8 (Exposed Pad), θJA ---------------------------------------------------------------------------------------- 75°C/W SOP-8 (Exposed Pad), θJC --------------------------------------------------------------------------------------- 15°C/W Lead Temperature (Soldering, 10 sec.) ------------------------------------------------------------------------- 260 °C Junction Temperature ----------------------------------------------------------------------------------------------- 150 °C Storage Temperature Range -------------------------------------------------------------------------------------- −65°C to 150°C ESD Susceptibility (Note 3) HBM (Human Body Model) ---------------------------------------------------------------------------------------- 2kV Recommended Operating Conditions (Note 4) Supply Input Voltage, VIN ----------------------------------------------------------------------------------------- 4.5V to 18V Junction Temperature Range -------------------------------------------------------------------------------------- −40°C to 125°C Ambient Temperature Range -------------------------------------------------------------------------------------- −40°C to 85°C Parameter Symbol Test Conditions Min Typ Max Unit Shutdown Supply Current VEN = 0V -- 0.5 3 μA Supply Current VEN = 3V, VFB = 0.9V -- 0.8 1.2 mA Reference Voltage VREF 4.5V ≤ VIN ≤ 18V 0.788 0.8 0.812 V Error Amplifier Transconductance GEA ΔIC = ±10μA -- 940 -- μA/V High Side Switch On-Resistance RDS(ON)1 -- 150 -- m Ω Low Side Switch On-Resistance RDS(ON)2 -- 130 -- m Ω High Side Switch Leakage Current VEN = 0V, VSW = 0V -- 0 10 μA Upper Switch Current Limit Min. Duty Cycle, VBOOT − VSW = 4.8V -- 5.1 -- A COMP to Current Sense Transconductance GCS -- 3.7 -- A/V Oscillation Frequency fOSC1 -- 800 -- kHz Short Circuit Oscillation Frequency fOSC2 VFB = 0V -- 270 -- kHz Maximum Duty Cycle DMAX VFB = 0.7V -- 84 -- % Minimum On-Time tON -- 100 -- ns |
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