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BQ24702PW View Datasheet(PDF) - Texas Instruments

Part NameBQ24702PW TI
Texas Instruments TI
DescriptionMULTICHEMISTRY BATTERY CHARGER CONTROLLER AND SYSTEM POWER SELECTOR
BQ24702PW Datasheet PDF : 32 Pages
1 2 3 4 5 6 7 8 9 10 Next Last
bq24702, bq24703
SLUS553D − MAY 2003 − REVISED JULY 2005
ELECTRICAL CHARACTERISTICS (CONTINUED)
(−40°C TJ 125°C, 7.0 VDC VCC 28 VDC, all voltages relative to Vss) (unless otherwise specified)
Adapter Current-Sense Amplifier
gm
CMRR
VICR
I(SINK)
IIB
V(SET)
AV
PARAMETER
Transconductance gain
Common-mode rejection ratio
Common-mode input voltage range (ACP)
Sink current (COMP)
Input bias current (ACP, ACN)
Input bias current accuracy ratio
(I(ACP), I(ACN))
AC current programming voltage (ACSET)
AC current set gain
Total ac current-sense mid-scale accuracy
Total ac current-sense full-scale accuracy
TEST CONDITIONS
See Note 1
COMP = 1 V, (ACP − ACN) = 10 mV
ACP = ACN = 28 V,
VCC = 28 V, ACSET = 2.5 V
ACP = ACN = 28 V, VCC = 28 V,
ACSET = 2.5 V, 0 TJ 125°C
0.65 V ACSET 2.5 V, 12 V ACP 20 V,
See Note 5
ACSET = 1.25 V, TJ = 25°C, See Note 6
ACSET = 1.25 V, See Note 6
ACSET = 2.5 V, TJ = 25°C, See Note 6
ACSET = 2.5 V, See Note 6
MIN
75
7.0
0.5
40
−3
0
24.5
−5%
−6%
−3.5%
−4%
TYP MAX UNIT
130 175 mA/V
90
dB
VCC V
1.5 2.5 mA
50
65
µA
0
3
2.5 V
25.3 26.5 V/V
5%
6%
3.5%
4%
Battery Voltage Error Amplifier
PARAMETER
TEST CONDITIONS
MIN TYP MAX
gm
Transconductance gain
CMRR Common-mode rejection ratio
See Note 1
75 135 175
90
VICR
VIT
BATSET common-mode input voltage range
Internal reference override input threshold voltage
I(SINK) Sink current COMP
COMP = 1 V,
(BATP − BATSET) = 10 mV,
BATSET = 1.25 V
1
2.5
0.20 0.25 0.35
0.5 1.5 2.5
V(FB)
NOTE:
TJ = 25°C
1.190 1.196 1.202
Error-amplifier precision reference voltage
TJ = 0°C to 85°C
1.183 1.196 1.203
TJ = −40°C to 125°C
1.178 1.196 1.204
5.
Calculation
of
the
ac
current:
IAC
+
ACSET
RSENSE
1
AV
6. Total ac-current set accuracy is based on the measured value of (ACP−ACN) = c, using the measured gain, AV.
Dc
+
ACSET
AV
,
Total accuracy in %
+
(Dm *
Dc
Dc)
100, I(ACP) * I(ACN) + 0
UNIT
mA/V
dB
V
V
mA
V
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