BQ24700 Datasheet, PDF (9/29 Pages) Texas Instruments – NOTEBOOK PC BATTERY CHARGE CONTROLLER AND SELECTOR WITH DPM

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bq24700, bq24701
NOTEBOOK PC BATTERY CHARGE CONTROLLER
AND SELECTOR WITH DPM
SLUS452B – APRIL 2001 – REVISED NOVEMBER 2002
electrical characteristics (T_A = T_OPR, 7.0 Vdc V_CC 20.0 Vdc, all voltages relative to V_ss) (unless
otherwise specified) (continued)
MOSFET gate drive
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX UNIT
AC driver RDS(on) high
AC driver RDS(on) low
Battery driver RDS(on) high
Battery driver RDS(on) low
tDa Time delay from ac driver off to battery driver on
tDb Time delay from battery driver off to ac driver on
VOH PWM driver high-level output voltage
PWM driver RDS(on) high
VOL
PWM driver low-level output voltage
PWM driver RDS(on) low
VCC = 18 V
VCC = 18 V
VCC = 18 V
VCC = 18 V
ACSEL 2.4 V ⇓ 0.2 V
ACSEL 0.2 V ⇑ 2.4 V
IOUT = –10 mA, VCC = 18 V
IOUT = –100 mA, VCC = 18 V
IOUT = 10 mA, VCC = 18 V
IOUT = 100 mA, VCC = 18 V
150
250 Ω
60
120 Ω
200
370 Ω
100
170 Ω
0.5
1.5 µs
1.0
2.0 µs
–0.12
–0.07
V
–1.2
–0.7
7
14 Ω
VHSP+0.04 VHSP+0.1
V
VHSP+0.5 VHSP+0.9
4
8Ω
selector
PARAMETER
TEST CONDITIONS
MIN TYP MAX UNIT
VACPRES
VIT(ACPRES)
td(ALMON)
td(ALMOFF)
AC presence detect voltage
AC presence hysteresis
ACSEL high to alarm set high in ac fault time delay
ACSEL low to alarm reset low in ac fault time delay
See Note 9
ACSEL 0.2 V ⇑ 2.4 V
SRN = SRP = 8 V,
ACSEL 2.4 V ⇓ 0.2 V
1.165 1.220 1.275 V
40
80 120 mV
5
10 µs
2
10 µs
VBATDEP
VNOBAT
tBATSEL
Battery depletion ALARM trip voltage
No battery detect, switch to ACDRV
Battery select time (ACSEL low to BATDRV low)
See Note 8
See Note 8
VS < BATP,
ACSEL 2.4 V ⇓ 0.2 V
1.165 1.220 1.275 V
0.87 0.98 1.07 V
0.2
3.0 µs
tACSEL
AC select time (ACSEL high to ACDRV low)
ACSEL 0.2 V ⇑ 2.4 V
0.2
VVS
VS voltage to enable BATDRV
BATP = 1 V
0.96
VIT(VS)
VS voltage hysteresis
VS > BATP
30
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.
3.0 µs
1.02 V
110 mV
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