BQ24745_14 Datasheet, PDF (6/39 Pages) Texas Instruments – SMBus-Controlled Multi-Chemistry Battery

bq24745
SLUS761D – DECEMBER 2007 – REVISED OCTOBER 2011
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ELECTRICAL CHARACTERISTICS
7 V ≤ V_DCIN ≤ 24 V, 0°C < T_J < 125°C, typical values are at T_A = 25°C, with respect to AGND (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
OPERATING CONDITIONS
V_{DCIN_OP}
DCIN input-voltage operating range
CHARGE VOLTAGE REGULATION
7
24
V_{VFB_OP}
VFB input-voltage range
ChargeVoltage() = 0x41A0
0
16.716
–0.5%
DCIN
16.8 16.884
0.5%
V_{VFB_REG _ACC} VFB charge-voltage regulation accuracy
ChargeVoltage() = 0x3130
ChargeVoltage() = 0x20D0
12.529
–0.5%
8.350
–0.6%
12.592
8.4
12.655
0.5%
8.450
0.6%
ChargeVoltage() = 0x1060
4.154
–0.9%
4.192
4.230
0.9%
V_{VFB_REG_ RNG Charge-voltage regulation range}
T_J = 0 to 125°C, 1.024 V–19.2 V, Max DAC
value is 19.2 V
1.024
19.2
CHARGE CURRENT REGULATION
V_{IREG_CHG_RNG} Charge-current regulation differential-voltage
range
V_{IREG_CHG} = V_CSOP – V_CSON, max. DAC value
is 80.64 mV
0
80.64
ChargeCurrent() = 0x0F80
3968
–3%
3%
I_{CHRG_REG_ACC} Charge-current regulation accuracy
ChargeCurrent() = 0x0800
ChargeCurrent() = 0x0200
–5%
–25%
2048
512
5%
25%
ChargeCurrent() = 0x0080
–33%
128
33%
INPUT CURRENT REGULATION
V_{IREG_DPM_RNG} Adapter-current regulation differential-voltage V_{IREG_DPM} = V_CSSP – V_CSSN, max. DAC value
range
is 110.084 mV
0
110.1
InputCurrent() ≥ 0x0800
4096
–3%
3%
I_{INPUT_REG_ACC} Input-current regulation accuracy
InputCurrent() = 0x0400
InputCurrent() = 0x0100
–5%
–25%
2048
512
5%
25%
InputCurrent() = 0x0080
–33%
256
33%
VREF REGULATOR
V_{VREF_REG}
VREF regulator voltage
I_{VREF_LIM}
VREF current limit
VDDP REGULATOR
V_ACIN > 0.6 V, 0 – 30 mA
V_VREF = 0 V, V_ACIN > 0.6 V
3.267
35
3.3
3.333
80
V_{VDDP_REG}
I_{VDDP_LIM}
VDDP regulator voltage
VDDP current limit
V_ACIN > 0.6 V, 0 – 50 mA
V_VDDP = 0 V, V_ACIN > 0.6 V
V_VDDP = 5 V, V_ACIN > 0.6 V
5.7
6
6.3
90
135
80
UNIT
V
V
V
V
V
V
V
mV
mA
mA
mA
mA
mV
mA
mA
mA
mA
V
mA
V
mA
6
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