BQ24735_17 Datasheet, PDF (6/46 Pages) Texas Instruments – 1- to 4-Cell Li+ Battery SMBus Charge Controller for Supporting Turbo Boost Mode With N-Channel Power MOSFET Selector

bq24735
SLUSAK9B – SEPTEMBER 2011 – REVISED APRIL 2015
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Electrical Characteristics (continued)
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
ChargeCurrent() = 0x1000H
3973
–3%
4096
4219
3%
ChargeCurrent() = 0x0800H
1946
–5%
2048
2150
5%
I_{CHRG_REG_ACC}
Charge current regulation accuracy 10-mΩ
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
0
80.64
InputCurrent() = 0x1000H
3973
–3%
4096
4219
3%
I_{DPM_REG_ACC}
Input current regulation accuracy 10-mΩ
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) = 40.96 mV
V_(SRP-SRN) or V_(ACP-ACN) = 20.48 mV
V_(SRP-SRN) or V_(ACP-ACN) = 10.24 mV
V_(SRP-SRN) or V_(ACP-ACN) = 5.12 mV
V_(SRP-SRN) or V_(ACP-ACN) = 2.56 mV
V_(SRP-SRN) or V_(ACP-ACN) = 1.28 mV
For stability with 0- to 1-mA load
4.5
0
0
0
–2%
–4%
–15%
–20%
–33%
–50%
24
19.2
3.3
1
20
2%
4%
15%
20%
33%
50%
100
V_{REGN_REG}
I_{REGN_LIM}
REGN regulator voltage
REGN current limit
V_VCC > 6.5 V, V_ACDET > 0.6 V (0-45 mA load)
5.5
6
6.5
V_REGN = 0 V, V_VCC > UVLO charge enabled and not in
TSHUT
50
75
V_REGN = 0 V, V_VCC > UVLO charge disabled or in
TSHUT
7
14
C_REGN
REGN output capacitor required for
stability
I_LOAD = 100 µA to 50 mA
1
INPUT UNDERVOLTAGE LOCKOUT COMPARATOR (UVLO)
UVLO
Undervoltage rising threshold
Undervoltage hysteresis, falling
FAST DPM COMPARATOR (FAST_DPM)
V_VCC rising
V_VCC falling
3.5 3.75
4
340
V_{FAST_DPM}
Fast DPM comparator stop charging rising threshold with respect to input current limit, voltage
across input sense resistor rising edge
103% 107% 111%
QUIESCENT CURRENT
Battery BATFET OFF STATE Current,
V_VBAT = 16.8 V, VCC disconnect from battery,
I_{BAT_BATFET_OFF}
BATFET off,
BATFET charge pump off, BATFET turns off, T_J = 0 to
5
I_SRP + I_SRN + I_PHASE + I_ACP + I_ACN
85°C
UNIT
mA
mA
mA
mA
mA
mV
mA
mA
mA
mA
V
V
V
mA
V/V
pF
V
mA
mA
µF
V
mV
µA
6
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