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RT6255BHSGJ8F Datasheet(PDF) 8 Page - Richtek Technology Corporation |
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RT6255BHSGJ8F Datasheet(HTML) 8 Page - Richtek Technology Corporation |
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8 / 20 page  RT6255A/B 8 DS6255A/B-02 March 2017 www.richtek.com © Copyright 2017 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. Note 1. Stresses beyond those listed “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions may affect device reliability. Note 2. θJA is measured in the natural convection at TA = 25°C on a four-layer Richtek Evaluation Board. θJC is measured at the lead of the package. Note 3. Devices are ESD sensitive. Handling precaution is recommended. Note 4. The device is not guaranteed to function outside its operating conditions. Parameter Symbol Test Conditions Min Typ Max Unit Enable Voltage EN Input High Voltage VEN_H 1.5 -- -- V EN Input Low Voltage VEN_L -- -- 0.4 V Feedback Voltage Feedback Threshold Voltage VTH_FB 0.594 0.6 0.606 V Feedback Current IFB VFB = 4V 50 -- 50 nA Internal MOSFET High-Side Switch On-Resistance RDS(ON)_H VBOOT VLX = 4.8V -- 45 -- m Low-Side Switch On-Resistance RDS(ON)_L -- 23 -- m Discharge FET RON RDISCHG -- 50 -- Current Limit Hide-Side Switch Current Limit ILIM_H -- 10.5 -- A Low-Side Switch Valley Current Limit ILIM_L 5.25 7.25 9.25 A Switching Frequency Oscillator Frequency fSW 400 500 600 kHz On-Time Timer Control Minimum On-Time tON_MIN VIN = VIN(MAX) -- 60 -- ns Minimum Off-Time tOFF_MIN -- 200 -- ns Thermal Shutdown Thermal Shutdown Threshold TSD -- 150 -- C Thermal Shutdown Hysteresis TSD -- 15 -- C Output Under Voltage UVP Trip Threshold UVP detect -- 60 -- % Hysteresis -- 10 -- % Power Good for (RT6255AHGJ8F/RT6255BHGJ8F) Power Good Threshold VPGOOD VFB rising 85 90 95 % VFB falling 80 85 90 % SS for (RT6255AHSGJ8F/RT6255BHSGJ8F) Soft-Start Current ISS -- 4 -- A |
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