BQ24700_14 Datasheet, PDF (8/32 Pages) Texas Instruments – NOTEBOOK PC BATTERY CHARGE CONTROLLER

bq24700, bq24701
ą
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)
battery current output amplifier
PARAMETER
GTR
VIBAT
Transfer gain
Battery current readback output voltage
(IBAT)
Line rejection voltage
CM
Common-mode input range (SRP)
VO(IBAT)
Battery current output voltage range
(IBAT)
IS(O) Output source current (IBAT)
Total battery current readback mid-scale
accuracy
Total battery current readback full-scale
accuracy
TEST CONDITIONS
(SRP – SRN) = 50 mV, See Note 6
(SRP – SRN) = 50 mV, SRP = 12 V,
VCC = 18 V,
TA = 25°C
TA = 25°C
(SRP – SRN) = 100 mV
(SRP – SRN) = 50 mV, TA = 25°C, See Note 7
(SRP – SRN) = 50 mV, –40°C ≤ TA ≤ 85°C,
See Note 7
(SRP – SRN) = 100 mV, TA = 25°C, See Note 7
(SRP – SRN) = 100 mV, –40°C ≤ TA ≤ 85°C,
See Note 7
MIN
5
0.97
5
0
150
–4%
–6%
–6%
–8%
TYP MAX UNIT
18.2 V
1.00 1.03 V
10
mV/V
18.2 V
2.5 V
600 1200 µA
4%
6%
6%
8%
5-V voltage reference
PARAMETER
VREF Output voltage (VREF)
Line regulation
Load regulation
Short circuit current
TEST CONDITIONS
0°C ≤ TA ≤ 70°C
–40°C ≤ TA ≤ 85°C
1 mA ≤ ILOAD ≤ 5 mA
MIN
5.000
4.960
8
TYP
5.030
5.030
0.15
1.0
18
MAX
5.060
5.070
0.37
2.5
30
UNIT
V
V
mV/V
mV/mA
mA
half supply regulator
PARAMETER
TEST CONDITIONS
MIN TYP MAX UNIT
VHSP(on)
VCC up-threshold for half supply
regulation
14.5 15.5 16.5 V
VCC hysteresis for half supply regulation
–7.2% –6.5% –6%
VHSP/VCC Voltage regulation
VCC ≥ VHSP(on), 16.5 V ≤ VCC ≤ 20 V
0.45 0.50 0.55
VHSP
VCC < VHSP(on), 7 V ≤ VCC ≤ 14.5 V
2.0 V
NOTES:
6.
Battery
readback
transfer
gain
GTR
+
VIBAT
(SRP * SRN)
7. Total battery current readback accuracy is based on the measured value of VIBAT, VIBATm, and the calculated value of VIBAT,
VIBATc, using the measured value of the transfer gain, GTR.
VIBATc + (SRP * SRN)
GTR
Total
Accuracy
in
%
+
VIBATm * VIBATc
VIBATm
100
8
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