bq24170
bq24172
www.ti.com
SLUSAD2A –NOVEMBER 2010–REVISED NOVEMBER 2010
ELECTRICAL CHARACTERISTICS
4.5V ≤ V(PVCC, AVCC) ≤ 17V, –40°C < TJ + 125°C, typical values are at TA = 25°C, with respect to AGND (unless otherwise
noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX UNITS
OPERATING CONDITIONS
AVCC input voltage operating range during
charging
VAVCC_OP
4.5
17
V
QUIESCENT CURRENTS
VAVCC > VUVLO, VSRN > VAVCC (SLEEP), TJ = 0°C
to 85°C
15
25
BTST, SW, SRP, SRN, VAVCC > VUVLO, VAVCC
VSRN, ISET < 40mV, VBAT=12.6V, Charge
disabled
>
Battery discharge current (sum of currents
into AVCC, PVCC, ACP, ACN)
IBAT
µA
BTST, SW, SRP, SRN, VAVCC > VUVLO, VAVCC
VSRN, ISET > 120mV, VBAT=12.6V, Charge done
>
25
1.5
5
VAVCC > VUVLO, VAVCC > VSRN, ISET < 40mV,
VBAT=12.6V, Charge disabled
1.2
2.5
Adapter supply current (sum of current into
AVCC,ACP, ACN)
VAVCC > VUVLO, VAVCC > VSRN, ISET > 120mV,
Charge enabled, no switching
IAC
mA
VAVCC > VUVLO, VAVCC > VSRN, ISET > 120mV,
Charge enabled, switching
15(1)
CHARGE VOLTAGE REGULATION
CELL to AGND, 1 cell, measured on SRN
CELL floating, 2 cells, measured on SRN
CELL to VREF, 3 cells, measured on SRN
Measured on FB
4.2
8.4
V
V
V
V
VBAT_REG
SRN regulation voltage (bq24170)
12.6
2.1
VFB_REG
Feddback regulation voltage (bq24172)
Charge voltage regulation accuracy
Leakage current into FB pin (bq24172)
TJ = 0°C to 85°C
–0.5%
-0.7%
0.5%
0.7%
100
TJ = –40°C to 125°C
IFB
VFB = 2.1 V
nA
CURRENT REGULATION – FAST CHARGE
VISET
KISET
ISET Voltage Range
RSENSE = 10mΩ
RSENSE = 10mΩ
0.12
0.8
V
Charge Current Set Factor (Amps of Charge
Current per Volt on ISET pin)
5
A/V
VSRP-SRN = 40 mV
VSRP-SRN = 20 mV
VSRP-SRN = 5 mV
ISET falling
-4%
-7%
-25%
40
4%
7%
Charge Current Regulation Accuracy
(with Schottky diode on SW)
25%
VISET_CD
VISET_CE
IISET
Charge Disable Threshold
Charge Enable Threshold
Leakage Current into ISET
50
mV
mV
nA
ISET rising
100
120
100
VISET = 2V
INPUT CURRENT REGULATION
Input DPM Current Set Factor (Amps of
Input Current per Volt on ACSET)
KDPM
RSENSE = 10mΩ
5
A/V
VACP-ACN = 80 mV
VACP-ACN = 40 mV
VACP-ACN = 20 mV
VACP-ACN = 5 mV
VACP-ACN = 2.5 mV
VACSET = 2V
-4%
-9%
4%
9%
Input DPM Current Regulation Accuracy
(with Schottky diode on SW)
–15%
–20%
-40%
15%
20%
40%
100
IACSET
Leakage Current into ACSET pin
nA
CURRENT REGULATION – PRE-CHARGE
KIPRECHG
Precharge current set factor
Percentage of fast charge current
VSRP-SRN = 4 mV
10%(2)
–25%
–40%
25%
40%
Precharge current regulation accuracy
VSRP-SRN = 2 mV
(1) Specified by design
(2) The minimum current is 120 mA on 10mΩ sense resistor.
Copyright © 2010, Texas Instruments Incorporated
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