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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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RT9451 датащи(PDF) 6 Page - Richtek Technology Corporation |
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RT9451 датащи(HTML) 6 Page - Richtek Technology Corporation |
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6 / 37 page  RT9451 6 DS9451-00 September 2013 www.richtek.com © Copyright 2013 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 VSHORT ≤ VBATS < VOREG VIN > 5V, RSENSE = 20mΩ, LOW_CHG = 0, Programmable 1000 -- 4000 Output Charge Current ICHRG VBATS < VOREG, VIN > 5V, RSENSE = 20mΩ, LOW_CHG = 1 -- 150 -- mA Charge Termination Detection Termination Charge Current IEOC VBATS > VOREG − VRECH, VIN > 5V, RSENSE = 20mΩ, Programmable 50 -- 400 mA Deglitch Time for Charge Termination Both Rising and Falling, 2mV Overdrive, tRISE, tFALL = 100ns -- 43 -- μs Charge Current Accuracy Offset Voltage, Sense Voltage Amplifier VSHORT ≤ VBATS < VOREG VIN > 5V, RSENSE = 20mΩ, 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) ΔVIN(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 = 100mA 80 90 100 AICR AICR = 500mA 400 450 500 mA VDDP Regulator Internal Bias Regulator Voltage VDDP VIN > VIN(min) or VBATS > VBATMIN, IVDDP = 1mA, CVDDP = 1μF 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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