BQ24750_07 Datasheet, PDF (6/38 Pages) Texas Instruments – Host-controlled Multi-chemistry Battery Charger with Integrated System Power Selector and AC Over-Power Protection

bq24750
SLUS735 – DECEMBER 2006
RECOMMENDED OPERATING CONDITIONS
over operating free-air temperature range (unless otherwise noted)
PH
PVCC, ACP, ACN, SRP, SRN, BAT, BATDRV, ACDRV
REGN, LODRV
VDAC, IADAPT
Voltage range VREF
ACSET, SRSET, TS, ACDET, ACOP, CHGEN, CELLS, ACGOOD, DPMDET
VADJ
BTST, HIDRV with respect to AGND and PGND
AGND, PGND
Maximum difference voltage: ACP–ACN, SRP–SRN
Junction temperature range
Storage temperature range
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MIN NOM MAX UNIT
–1
24
0
24
0
6.5
0
3.6
3.3
V
0
5.5
0
6.5
0
30
–0.3
0.3
–0.3
0.3
–40
125
°C
–55
150
ELECTRICAL CHARACTERISTICS
7.0 V ≤ V_PVCC≤ 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 UNIT
OPERATING CONDITIONS
V_{PVCC_OP}
PVCC Input voltage operating range
CHARGE VOLTAGE REGULATION
5.0
24.0
V
V_{BAT_REG_RNG}
V_{VDAC_OP}
V_{ADJ_OP}
BAT voltage regulation range
VDAC reference voltage range
VADJ voltage range
4-4.512 V per cell, times 2,3,4 cells
8 V, 8.4 V, 9.024 V
8
18.048
V
2.6
3.6
V
0
REGN
V
–0.5
0.5
Charge voltage regulation accuracy 12 V, 12.6 V, 13.536 V
–0.5
0.5
%
16 V, 16.8 V, 18.048 V
–0.5
0.5
Charge voltage regulation set to
default to 4.2 V per cell
VADJ connected to REGN, 8.4 V, 12.6 V, –0.5
16.8 V
0.5
%
CHARGE CURRENT REGULATION
V_{IREG_CHG}
Charge current regulation differential V_{IREG_CHG} = V_SRP– V_SRN
voltage range
0
100 mV
V_{SRSET_OP}
SRSET voltage range
Charge current regulation accuracy
INPUT CURRENT REGULATION
V_{IREG_CHG} = 40–100 mV
V_{IREG_CHG} = 20 mV
V_{IREG_CHG} = 5 mV
V_{IREG_CHG} = 1.5 mV
0
VDAC
V
–3
3
–5
5
%
–25
25
–33
33
V_{IREG_DPM}
Adapter current regulation differential V_{IREG_DPM} = V_ACP– V_ACN
voltage range
0
100 mV
V_{ACSET_OP}
ACSET voltage range
Input current regulation accuracy
VREF REGULATOR
V_{IREG_DPM} = 40–100 mV
V_{IREG_DPM} = 20 mV
V_{IREG_DPM} = 5 mV
V_{IREG_DPM} = 1.5 mV
0
VDAC
V
–3
3
–5
5
%
–25
25
–33
33
V_{VREF_REG}
I_{VREF_LIM}
VREF regulator voltage
VREF current limit
V_ACDET > 0.6 V, 0-30 mA
V_VREF = 0 V, V_ACDET > 0.6 V
3.267 3.3 3.333
V
35
75 mA
6
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