BQ24707 Datasheet, PDF (4/36 Pages) Texas Instruments – 1-4 Cell Li+ Battery SMBus Charge Controller With Independent Comparator and Advanced Circuit Protection

bq24707
bq24707A
SLUSA78B – JULY 2010 – REVISED MARCH 2011
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ELECTRICAL CHARACTERISTICS
4.5 V ≤ V_(VCC) ≤ 24 V, 0°C ≤ T_J ≤ 125°C, typical values are at T_A = 25°C, with respect to GND (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
OPERATING CONDITIONS
V_{VCC_OP}
VCC Input voltage operating range
CHARGE VOLTAGE REGULATION
4.5
24
V_{BAT_REG_RNG}
BAT voltage regulation range
ChargeVoltage() = 0x41A0H
1.024
16.716
–0.5%
19.2
16.8 16.884
0.5%
V_{BAT_REG_ACC}
Charge voltage regulation accuracy
ChargeVoltage() = 0x3130H
ChargeVoltage() = 0x20D0H
12.529
–0.5%
8.350
–0.6%
12.592
8.4
12.655
0.5%
8.450
0.6%
ChargeVoltage() = 0x1060H
4.163
–0.7%
4.192
4.221
0.7%
CHARGE CURRENT REGULATION
V_{IREG_CHG_RNG}
Charge current regulation differential voltage range
V_{IREG_CHG} = V_SRP - V_SRN
ChargeCurrent() = 0x1000H
0
3973
–3%
4096
81.28
4219
3%
ChargeCurrent() = 0x0800H
1946
–5%
2048
2150
5%
I_{CHRG_REG_ACC}
Charge current regulation accuracy 10mΩ current
sensing resistor
ChargeCurrent() = 0x0200H
410
–20%
512
614
20%
ChargeCurrent() = 0x0100H
172
–33%
256
340
33%
ChargeCurrent() = 0x0080H
64
–50%
128
192
50%
INPUT CURRENT REGULATION
V_{IREG_DPM_RNG}
Input current regulation differential voltage range
V_{IREG_DPM} = V_ACP – V_ACN
InputCurrent() = 0x1000H
0
3973
–3%
4096
80.64
4219
3%
I_{DPM_REG_ACC}
Input current regulation accuracy 10mΩ current
sensing resistor
InputCurrent() = 0x0800H
InputCurrent() = 0x0400H
1946
–5%
870
–15%
2048
1024
2150
5%
1178
15%
InputCurrent() = 0x0200H
384
–25%
512
640
25%
INPUT CURRENT OR CHARGE CURRENT SENSE AMPLIFIER
V_{ACP/N_OP}
V_{SRP/N_OP}
V_IOUT
I_IOUT
A_IOUT
Input common mode range
Output common mode range
IOUT output voltage range
IOUT output current
Current sense amplifier gain
V_{IOUT_ACC}
Current sense output accuracy
C_{IOUT_MAX}
Maximum output load capacitance
REGN REGULATOR
Voltage on ACP/ACN
Voltage on SRP/SRN
V_(ICOUT)/V_(SRP-SRN) or V_(ACP-ACN)
V_(SRP-SRN) or V_(ACP-ACN) = 40.96mV
V_(SRP-SRN) or V_(ACP-ACN) = 20.48mV
V_(SRP-SRN) or V_(ACP-ACN) = 10.24mV
V_(SRP-SRN) or V_(ACP-ACN) = 5.12mV
V_(SRP-SRN) or V_(ACP-ACN) = 2.56mV
V_(SRP-SRN) or V_(ACP-ACN) = 1.28mV
For stability with 0 to 1mA load
4.5
0
0
0
–2%
–4%
–15%
–20%
–33%
–50%
24
19.2
1.6
1
20
2%
4%
15%
20%
33%
50%
100
V_{REGN_REG}
I_{REGN_LIM}
I_{REGN_LIM_TSHUT}
C_REGN
REGN regulator voltage
REGN current limit
REGN output capacitor required for stability
V_VCC > 6.5V, V_ACDET > 0.6V (0-55mA load)
V_REGN = 0V, V_VCC > UVLO charge enabled and not in TSHUT
V_REGN = 0V, V_VCC > UVLO charge disabled or in TSHUT
I_LOAD = 100µA to 65mA
5.5
6
6.5
65
80
7
16
1
UNIT
V
V
V
V
V
V
mV
mA
mA
mA
mA
mA
mV
mA
mA
mA
mA
V
V
V
mA
V/V
pF
V
mA
µF
4
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