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EMK325BJ476MM Datasheet(PDF) 3 Page - Richtek Technology Corporation |
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EMK325BJ476MM Datasheet(HTML) 3 Page - Richtek Technology Corporation |
3 / 12 page RT8272 3 DS8272-02 March 2011 www.richtek.com Function Block Diagram Absolute Maximum Ratings (Note 1) Supply Voltage, VIN ----------------------------------------------------------------------------------------- −0.3V to 26V Switching Voltage, SW ------------------------------------------------------------------------------------- −0.3V to (VIN + 0.3V) BOOT Voltage ------------------------------------------------------------------------------------------------ (VSW − 0.3V) to (VSW + 6V) All Other Pins Voltage -------------------------------------------------------------------------------------- −0.3V to 6V 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 Junction Temperature --------------------------------------------------------------------------------------- 150 °C Lead Temperature (Soldering, 10 sec.) ----------------------------------------------------------------- 260 °C Storage Temperature Range ------------------------------------------------------------------------------- −65°C to 150°C ESD Susceptibility (Note 3) HBM (Human Body Mode) --------------------------------------------------------------------------------- 2kV MM (Machine Mode) ---------------------------------------------------------------------------------------- 200V Recommended Operating Conditions (Note 4) Supply Voltage, VIN ----------------------------------------------------------------------------------------- 4.75V to 24V Enable Voltage, VEN ----------------------------------------------------------------------------------------- 0V to 5.5V Junction Temperature Range ------------------------------------------------------------------------------ −40°C to 125°C Ambient Temperature Range ------------------------------------------------------------------------------ −40°C to 85°C VA + - + - + - UV Comparator Oscillator 1.2MHz/440kHz Foldback Control 0.5V Internal Regulator + - 1V 1µA Shutdown Comparator Current Sense Amplifier BOOT VIN GND SW FB EN COMP 3V 10k VA VCC VCC Slope Comp Current Comparator SS 10µA VCC + - EA 0.92V Gm = 680µA/V + Logic |
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