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BQ24701 Datasheet(PDF) 9 Page - Texas Instruments |
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BQ24701 Datasheet(HTML) 9 Page - Texas Instruments |
9 / 28 page bq24700, bq24701 NOTEBOOK PC BATTERY CHARGE CONTROLLER AND SELECTOR WITH DPM SLUS452B – APRIL 2001 – REVISED NOVEMBER 2002 9 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 electrical characteristics (TA = TOPR, 7.0 Vdc VCC 20.0 Vdc, all voltages relative to Vss) (unless otherwise specified) (continued) MOSFET gate drive PARAMETER TEST CONDITIONS MIN TYP MAX UNIT AC driver RDS(on) high VCC = 18 V 150 250 Ω AC driver RDS(on) low VCC = 18 V 60 120 Ω Battery driver RDS(on) high VCC = 18 V 200 370 Ω Battery driver RDS(on) low VCC = 18 V 100 170 Ω tDa Time delay from ac driver off to battery driver on ACSEL 2.4 V ⇓ 0.2 V 0.5 1.5 µs tDb Time delay from battery driver off to ac driver on ACSEL 0.2 V ⇑ 2.4 V 1.0 2.0 µs V PWM driver high level output voltage IOUT = –10 mA, VCC = 18 V –0.12 –0.07 V VOH PWM driver high-level output voltage IOUT = –100 mA, VCC = 18 V –1.2 –0.7 V PWM driver RDS(on) high 7 14 Ω V PWM dri er lo le el o tp t oltage IOUT = 10 mA, VCC = 18 V VHSP+0.04 VHSP+0.1 V VOL PWM driver low-level output voltage IOUT = 100 mA, VCC = 18 V VHSP+0.5 VHSP+0.9 V PWM driver RDS(on) low 4 8 Ω selector PARAMETER TEST CONDITIONS MIN TYP MAX UNIT VACPRES AC presence detect voltage See Note 9 1.165 1.220 1.275 V VIT(ACPRES) AC presence hysteresis 40 80 120 mV td(ALMON) ACSEL high to alarm set high in ac fault time delay ACSEL 0.2 V ⇑ 2.4 V 5 10 µs td(ALMOFF) ACSEL low to alarm reset low in ac fault time delay SRN = SRP = 8 V, ACSEL 2.4 V ⇓ 0.2 V 2 10 µs VBATDEP Battery depletion ALARM trip voltage See Note 8 1.165 1.220 1.275 V VNOBAT No battery detect, switch to ACDRV See Note 8 0.87 0.98 1.07 V tBATSEL Battery select time (ACSEL low to BATDRV low) VS < BATP, ACSEL 2.4 V ⇓ 0.2 V 0.2 3.0 µs tACSEL AC select time (ACSEL high to ACDRV low) ACSEL 0.2 V ⇑ 2.4 V 0.2 3.0 µs VVS VS voltage to enable BATDRV BATP = 1 V 0.96 1.02 V VIT(VS) VS voltage hysteresis VS > BATP 30 110 mV NOTES: 8. Refer to Table 1 to determine the logic operation of the bq24700 and the bq24701. 9. Maximum ac adapter voltage (VCC) and AC presence detect voltage are 18 V. |
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