Datasheet

TPS65950
www.ti.com SWCS032E–OCTOBER 2008–REVISED JANUARY 2011
Table 8-3. CV Mode Electrical Characteristics
(1)
Parameter Test Conditions Min Typ Max Unit
Main charge constant voltage mode VAC = 5.4 V, ADCIN1 pin floating, LDOOK = 1
CBAT Battery node capacitor 37 80 167 μF
ESR (including FUSE) 0.4 0.5 Ω
VBAT regulated voltage, including Typical condition is VBAT for VAC = 5.4 V, ILOAD = 0.5 A 3.88 4.0 4.12 V
dc (posttrim), dc load regulation,
dc load regulation: VAC = VACmin, ILOAD varying from 0
and dc line regulation
to ILOADmax
dc line regulation: ILOAD = ILOADmax, VAC varying from
VACmin to VACmax
Maximum condition is ILOAD = 0, VAC = 6.2 V
Minimum condition is ILOAD = 1 A, VAC = 4.8 V
ILOAD 1 A
BCI VBAT load current VAC = 5.4 V 15 35 55 mA
VAC 4.8 5.4 6.2 V
Transient load regulation during VBAT(Iout 20 mA) – VBAT(Iout 500 mA) in load change
300 300 mV
internal LDO startup time = 1 μs (BCI in precharge CV mode)
Transient load during LDO and VBAT(Iout 30 mA) – VBAT(Iout 830 mA) in load change
300 300 mV
dc-dc startup time = 1 μs (BCI in main charge CV mode)
Transient load regulation VBAT(Iout 30 mA) – VBAT(Iout 300 mA) in load change 100 100 mV
time = 1 μs (BCI in main charge CV mode) (ESR = 0.4 Ω)
(1) In CV mode, an external FET characteristic is critical. This mode has been validated for FDJ1027P FET.
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