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BQ29312A Datasheet(PDF) 5 Page - Texas Instruments |
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BQ29312A Datasheet(HTML) 5 Page - Texas Instruments |
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5 / 39 page  www.ti.com ELECTRICAL CHARACTERISTICS (Continued) bq29312A SLUS629A – JANUARY 2005 – REVISED AUGUST 2005 T A = 25°C, C(REG) = 4.7 µF, BAT = 14 V (unless otherwise noted) PARAMETER TEST CONDITION MIN NOM MAX UNIT OVERLOAD (OL) AND SHORT-CIRCUIT (SC) DETECTION VOL OL detection threshold range, typical(1) –50 –205 mV ∆V OL OL detection threshold program step 5 mV VHYS(OL) OL detection threshold hysteresis 7 10 13 mV Charge 100 475 V(SC) SC detection threshold range, typical(2) mV Discharge –100 –475 Charge 25 ∆V (SC) SC detection threshold program step mV Discharge –25 VHYS(SC) SC detection threshold hysteresis Charge and Discharge 40 50 60 mV VOL = 50 mV (min) 40 50 60 V(OL_acr) OL detection threshold accuracy(1) Discharge VOL = 100 mV 90 100 110 mV VOL = 205 mV (max) 184 205 226 VSC = 100 mV (min) 80 100 120 V(SC_acr) SC detection threshold accuracy(2) Charge and Discharge VSC = 200 mV 180 200 220 mV VSC = 475 mV (max) 426 475 523 FET DRIVE CIRCUIT V(FETOND)= V(BAT)– V(DSG)VGS connect 1 MΩ BAT= 20 V 12 15 18 Output voltage, charge, and discharge V(FETON) V FETs on V(FETONC)=V(PACK)– V(CHG)VGS connect 1 MΩ PACK = 20 V 12 15 18 V(ZCHG) ZVCHG clamp voltage PACK= 4.5 V 3.3 3.5 3.7 V V(FETOFF)= V(PACK)– V(DSG) PACK= 16 V 0.2 Output voltage, charge and discharge V(FETOFF) V FETs off V(FETOFF)=V(BAT)– V(CHG) BAT = 16 V 0.2 VDSG :10%–90% 40 200 tr Rise time CL = 4700 pF µs VCHG :10%–90% 40 200 VDSG :90%–10% 40 200 tf Fall time CL = 4700 pF µs VCHG :90%–10% 40 200 THERMISTOR DRIVE IO = –1 mA at TOUT pin, rds(ON) = (VREG– VO (TOUT))/1 mA, rDS(on) TOUT pass-element series resistance 50 100 Ω TA = –25°C to 85°C LOGIC XALERT TA = –25°C to 85°C 60 100 200 R(PUP) Internal pullup resistance k Ω SDATA, SCLK, TA = –25°C to 85°C 6 10 20 XALERT, IO = 200 µA, TA = –25°C to 85°C 0.2 VOL Logic level output voltage SDATA, IO = 50 µA, TA = –25°C to 85°C 0.4 V OD IO=1 mA, TA = –25°C to 85°C 0.6 (1) See OL register for setting detection threshold (2) See SC register for setting detection threshold 5 |
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