Datasheet

TPS65950
www.ti.com SWCS032E–OCTOBER 2008–REVISED JANUARY 2011
Table 8-1. Main Charge Electrical Characteristics
VBAT = 3.6 V, R
S
= 0.22 Ω, unless otherwise specified (continued)
Parameter Test Conditions Min Typ Max Unit
ac main charge battery CHGIREG = (value relative to I
CHG
= 0.6 A), VAC = 5.4 150 μs
removal switch-off time V,
C = 100 nF connected to ICTLAC1, VBAT threshold =
4.55 V, measure charge current from removal to 10%
Miller compensation
CHGIREG = (value relative to I
CHG
= 0.6 A), VAC = 5.4 150
V,
C = 100 nF connected to ICTLAC1, VBAT threshold =
4.55 V, measure charge current from removal to 10%
Regular compensation
USB main charge battery CHGIREG = (value relative to I
CHG
= 0.6 A), VBUS = 5.0 150 μs
removal switch-off time V,
C = 100 nF connected to ICTLUSB1, VBAT threshold =
4.55 V, measure charge current from removal to 10%
VAC-to-MADC input VAC from 4.8 V to 6.8 V (maximum MADC input voltage 0.12 0.15 0.18 V/V
attenuation = 1.224 V)
VBAT-to-MADC input VBAT from 3.0 V to 4.5 V (maximum MADC input 0.2 0.25 0.3 V/V
attenuation voltage = 1.35 V)
Current-to-voltage conversion (VCCS–VBATS) rising from 0 V to 0.17 V: CGAIN = 0 0.704 0.88 1.056 mV/m
slope
(2)
equivalent to 0–775 mA range A
(VCCS–VBATS) rising from 0 V to 0.33 V: CGAIN = 1 0.352 0.44 0.528
equivalent to 0–1500 mA range
Current-to-voltage conversion OFFSEN = 1, OFFSN[1:0] = 00, CGAIN = 0, OFFSIGN = 18.7 mV
positive offset 0
OFFSEN = 1, OFFSN[1:0] = 01, CGAIN = 0, OFFSIGN = 38.8
0
OFFSEN = 1, OFFSN[1:0] = 10, CGAIN = 0, OFFSIGN = 60.1
0
OFFSEN = 1, OFFSN[1:0] = 11, CGAIN = 0, OFFSIGN = 82.6
0
Current-to-voltage conversion OFFSEN = 1, OFFSN[1:0] = 00, CGAIN = 0, OFFSIGN = –18.2 mV
negative offset 1
OFFSEN = 1, OFFSN[1:0] = 01, CGAIN = 0, OFFSIGN = –35.6
1
OFFSEN = 1, OFFSN[1:0] = 10, CGAIN = 0, OFFSIGN = –52.2
1
OFFSEN = 1, OFFSN[1:0] = 11, CGAIN = 0, OFFSIGN = –67.6
1
Charge voltage and charge Linear range 1FF 3BA hex
current DAC
Differential nonlinearity –2 2 LSB
Integrated nonlinearity –2 2 LSB
Offset –25 25 mV
ADIN0 dc current source ADIN0 = 1 V 7 10 13 μA
ADCIN1 dc current source ADCIN1 = 1 V, ITHSENS[2:0] = 000 (maximum MADC 9.875 10 10.125 μA
input voltage = 0.875 V), After TRIM done by
ISRCTRIM[3:0], at ambient temperature
(2) MADC output code = (VCCS – VBATS) × 4 with CGAIN = 0
MADC output code = (VCCS – VBATS) × 2 with CGAIN = 1
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