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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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WM8310 датащи(PDF) 23 Page - Wolfson Microelectronics plc |
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WM8310 датащи(HTML) 23 Page - Wolfson Microelectronics plc |
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23 / 291 page  Pre-Production WM8310 w PP, May 2012, Rev 3.1 23 7.7 BATTERY CHARGER Unless otherwise noted: TJ = -40°C to +125°C; Typical values are at TJ = +25ºC PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT General Supply voltage (Voltage required to commence charging; note that charging can continue at lower supply voltages, eg. under current throttling conditions) VSYSVDD 4.3 5.5 V Target voltage VBATT_TGT CHG_VSEL = 00 4.0 4.05 4.1 V CHG_VSEL = 01 4.05 4.10 4.15 CHG_VSEL = 10 4.1 4.15 4.2 CHG_VSEL = 11 4.15 4.20 4.25 Charger re-start threshold (Trickle charging starts when battery voltage is below this threshold) VBATT_RSTRT VBATT_TGT - 100mV V Defective battery threshold VBATT_DEF 2.85 V Defective battery timeout tBATT_DEF 30 mins Overvoltage threshold VBATT_OV 4.5 V End of Charge Current IEOC Set by CHG_ITERM 20 to 90 mA Maximum trickle charge current ITRKL_LIM Set by CHG_TRKL_ILIM 50 to 200 mA Fast charge threshold (Fast charging fast-charge is only possible when battery voltage is above this threshold) VFAST_CHG 2.85 V Maximum fast charge current IFAST_LIM Set by CHG_FAST_ILIM 50 to 1000 mA Supply voltage regulation level (Current throttling is applied if supply drops to this level) VSYS_REG Internal Battery FET ‘On’ Resistance RCHG_SW VBATTVDD = 3.8V 90 m VBATTVDD = 3.3V 100 Battery Temperature Monitoring Battery temperature monitor source (NTCBIAS) VNTCBIAS 2.1 V NTCMON voltage for high battery temperature detection VBTEMP_H VNTCMON falling 0.344 VNTCBIAS V VNTCMON rising 0.365 VNTCBIAS NTCMON voltage for low battery temperature detection VBTEMP_L VNTCMON rising 0.767 VNTCBIAS V VNTCMON falling 0.743 VNTCBIAS NTCMON voltage for ‘no NTC’ detection VNO_NTC VNTCMON rising 0.961 VNTCBIAS V VNTCMON falling 0.931 VNTCBIAS |
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