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GRM31CR61E106K Datasheet(PDF) 4 Page - Richtek Technology Corporation |
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GRM31CR61E106K Datasheet(HTML) 4 Page - Richtek Technology Corporation |
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4 / 15 page  RT8271 4 DS8271-02 March 2011 www.richtek.com Electrical Characteristics Parameter Symbol Test Conditions Min Typ Max Unit Feedback Reference Voltage VFB 4.75V ≤ VIN ≤ 24V 0.902 0.92 0.938 V High Side Switch-On Resistance RDS(ON)1 -- 0.18 -- Ω Low Side Switch-On Resistance RDS(ON)2 -- 10 -- Ω Switch Leakage VEN = 0V, VSW = 0V -- -- 10 μA Current Limit ILIM Duty = 75%; VBOOT−SW = 4.8V -- 3 -- A Current Sense Transconductance GCS Output Current to VCOMP -- 2.5 -- A/V Error Amplifier Tansconductance Gm ΔIC = ±10μA 620 920 1220 μA/V Oscillator Frequency fSW -- 1.2 -- MHz Short Circuit Oscillation Frequency VFB = 0V -- 440 -- kHz Maximum Duty Cycle DMAX VFB = 0.8V -- 75 -- % Minimum On-Time tON -- 90 -- ns Under Voltage Lockout Threshold Rising 3.8 4.2 4.5 V Under Voltage Lockout Threshold Hysteresis -- 250 -- mV (VIN = 12V, TA = 25 °C unless otherwise specified) 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) The Other Pins Voltage ------------------------------------------------------------------------------------- −0.3V to 6V Power Dissipation, PD @ TA = 25°C SOP-8 ---------------------------------------------------------------------------------------------------------- 0.833W MSOP-10 (Exposed Pad) ---------------------------------------------------------------------------------- 1.163W Package Thermal Resistance (Note 2) SOP-8, θJA ---------------------------------------------------------------------------------------------------- 120°C/W MSOP-10 (Exposed Pad), θJA ---------------------------------------------------------------------------- 86°C/W MSOP-10 (Exposed Pad), θJC ---------------------------------------------------------------------------- 30°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 To be continued |
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