bq24735
SLUSAK9 –SEPTEMBER 2011
www.ti.com
ELECTRICAL CHARACTERISTICS
4.5 V ≤ VVCC ≤ 24 V, 0°C ≤ TJ ≤ 125°C, typical values are at TA = 25°C, with respect to GND (unless otherwise noted)
PARAMETER
OPERATING CONDITIONS
VVCC_OP VCC Input voltage operating range
CHARGE VOLTAGE REGULATION
VBAT_REG_RNG Battery voltage range
TEST CONDITIONS
MIN
TYP
MAX UNIT
4.5
24
V
1.024
16.716
-0.5%
19.2
V
V
16.8 16.884
0.5%
ChargeVoltage() = 0x41A0H
12.529 12.592 12.655
V
V
V
ChargeVoltage() = 0x3130H
ChargeVoltage() = 0x20D0H
ChargeVoltage() = 0x1060H
–0.5%
8.350
–0.6%
4.163
–0.7%
0.5%
8.45
VBAT_REG_ACC
Charge voltage regulation accuracy
8.4
0.6%
4.221
0.7%
4.192
CHARGE CURRENT REGULATION
Charge current regulation differential
VIREG_CHG_RNG
VIREG_CHG = VSRP - VSRN
0
81.28
mV
mA
voltage range
3973
–3%
1946
–5%
410
4096
2048
512
4219
3%
ChargeCurrent() = 0x1000H
2150
5%
mA
mA
mA
mA
ChargeCurrent() = 0x0800H
ChargeCurrent() = 0x0200H
ChargeCurrent() = 0x0100H
ChargeCurrent() = 0x0080H
614
20%
340
33%
192
50%
Charge current regulation accuracy 10mΩ
current sensing resistor
ICHRG_REG_ACC
–20%
172
256
–33%
64
128
–50%
INPUT CURRENT REGULATION
Input current regulation differential voltage
VIREG_DPM_RNG
VIREG_DPM = VACP – VACN
0
80.64
mV
mA
range
3973
–3%
1946
–5%
870
4096
2048
1024
512
4219
3%
InputCurrent() = 0x1000H
2150
5%
mA
mA
mA
InputCurrent() = 0x0800H
InputCurrent() = 0x0400H
InputCurrent() = 0x0200H
Input current regulation accuracy 10mΩ
current sensing resistor
IDPM_REG_ACC
1178
15%
640
–15%
384
–25%
25%
INPUT CURRENT OR CHARGE CURRENT SENSE AMPLIFIER
VACP/N_OP
VSRP/N_OP
VIOUT
Input common mode range
Output common mode range
IOUT output voltage range
IOUT output current
Voltage on ACP/ACN
Voltage on SRP/SRN
4.5
0
24
19.2
3.3
1
V
V
0
V
IIOUT
0
mA
V/V
AIOUT
Current sense amplifier gain
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
20
–2%
–4%
2%
4%
–15%
–20%
–33%
–50%
15%
20%
33%
50%
100
VIOUT_ACC
Current sense output accuracy
CIOUT_MAX
Maximum output load capacitance
pF
6
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