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RT9451GQW Datasheet(PDF) 6 Page - Richtek Technology Corporation |
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RT9451GQW Datasheet(HTML) 6 Page - Richtek Technology Corporation |
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6 / 37 page  RT9451 6 DS9451-01 March 2017 www.richtek.com © Copyright 2017 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. Parameter Symbol Test Conditions Min Typ Max Unit Current Regulation Fast Charge Output Charge Current ICHRG VSHORT VBATS VOREG VIN 5V, RSENSE = 20m, LOW_CHG = 0, programmable 1000 -- 4000 mA VBATS VOREG, VIN 5V, RSENSE = 20m, LOW_CHG = 1 -- 150 -- Charge Termination Detection Termination Charge Current IEOC VBATS > VOREG VRECH, VIN > 5V, RSENSE = 20m, programmable 50 -- 400 mA Deglitch Time for Charge Termination Both Rising and Falling, 2mV Overdrive, tRISE, tFALL = 100ns -- 43 -- s Charge Current Accuracy Offset Voltage, Sense Voltage Amplifier VSHORT VBATS VOREG VIN 5V, RSENSE = 20m, LOW_CHG = 0, programmable 1 -- 1 mV BAD Adaptor Detection Input Voltage Lower Limit VIN(MIN) Bad adaptor detection, VIN falling 3.5 3.7 3.9 V Deglitch Time for VIN Rising above VIN(MIN) Rising voltage, 2mV over drive, tRISE = 100ns -- 30 -- ms Hysteresis for VIN(MIN) VIN(MIN) VIN rising 100 -- 200 mV Current Source to GND During bad adaptor detection 20 30 40 mA Detection Interval TINT Input power source detection -- 2 -- s Minimum Input Voltage Regulation Minimum Input Voltage Regulation Threshold VMIVR Charge mode, programmable 4.2 -- 4.76 V VMIVR Accuracy 2 -- 2 % Active Input Current Regulation AICR AICR = 100mA 80 90 100 mA AICR = 500mA 400 450 500 VDDP Regulator Internal Bias Regulator Voltage VDDP VIN > VIN(min) or VBATS > VBATMIN, IVDDP = 1mA, CVDDP = 1F 2 -- 6 V VDDP Output Short Current Limit -- 60 -- mA Voltage from BOOT to LX Pin During charge or boost operation -- -- 6 V Battery Recharge Threshold Recharge Threshold Voltage VRECH Below VOREG 100 130 160 mV Deglitch Time VBATS decreasing below threshold, tFALL = 100ns, 10mV overdrive -- 130 -- ms |
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