Datasheet

LTC4155
7
4155fc
ELECTRICAL CHARACTERISTICS
The l denotes the specifications which apply over the specified operating
junction temperature range, otherwise specifications are at T
A
≈ T
J
= 25°C (Note 2). V
BUS
= 5V, BATSNS = 3.7V, DVCC = 3.3V,
R
CLPROG1
= R
CLPROG2
= 1.21k, R
PROG
= 499Ω, unless otherwise noted.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
WALLGTPROT
WALLGT Output Voltage Protected WALLSNS > V
WALLOVLO
0V
V
USBGTLOAD
,
V
WALLGTLOAD
USBGT, WALLGT Voltage Under
Load
5V Through 3.6k into WALLSNS, USBSNS,
I
USBGT
, I
WALLGT
= 1µA
8.4 8.9 V
I
USBSNSQ
USBSNS Quiescent Current V
USBSNS
= 5V, V
USBSNS
> V
WALLSNS
V
USBSNS
= 5V, V
WALLSNS
> V
USBSNS
27
54
µA
µA
I
WALLSNSQ
WALLSNS Quiescent Current V
WALLSNS
= 5V, V
WALLSNS
> V
USBSNS
V
WALLSNS
= 5V, V
USBSNS
> V
WALLSNS
27
54
µA
µA
t
RISE
OVGCAP Time to Reach Regulation C
OVGCAP
= 1nF 1.2 ms
IRQ Pin Characteristics
I
IRQ
IRQ Pin Leakage Current V
IRQ
= 5V 1 µA
V
IRQ
IRQ Pin Output Low Voltage I
IRQ
= 5mA 75 100 mV
ID Pin Characteristics
I
ID
ID Pin Pull-Up Current V
ID
= 0V 35 55 85 A
V
ID_OTG
ID Pin Threshold Voltage ID Pin Falling
Hysteresis
0.5 0.86
0.2
0.95 V
V
Overtemperature Battery Conditioner
I
BATOVERTEMP
Overtemp Battery Discharge
Current
Only When Enabled via I
2
C Control 125 mA
V
BATOVERTEMP
Overtemp Battery Voltage Target Only When Enabled via I
2
C Control 3.85 V
Thermistor Measurement System
κ
OFFSET
V
NTC
/V
NTCBIAS
A/D Lower Range
End
V
NTC
/V
NTCBIAS
Ratio Below Which Only 0x00
Is Returned
0.113 V/V
κ
HIGH
V
NTC
/V
NTCBIAS
A/D Upper Range
End
V
NTC
/V
NTCBIAS
Ratio Above Which Only 0x7F
Is Returned
0.895 V/V
κ
SPAN
A/D Span Coefficient
(Decimal Format)
6.091 6.162 6.191 mV/V/LSB
d
TOO_COLD
NTCVAL at NTC_TOO_COLD
(Decimal Format)
Warning Threshold
Reset Threshold
102
98
102
98
102
98
Count
Count
d
TOO_WARM
NTCVAL at NTC_TOO_WARM
(Decimal Format)
Warning Threshold
Reset Threshold
41
45
41
45
41
45
Count
Count
d
HOT_FAULT
NTCVAL at HOT_FAULT
(Decimal Format)
Fault Threshold
Reset Threshold
19
23
19
23
19
23
Count
Count
I
NTC
NTC Leakage Current –100 100 nA
Ideal Diode
V
FWD
Forward Voltage Detection Input Power Available, Battery Charger Off 15 mV
I
2
C Port
DVCC I
2
C Logic Reference Level (Note 3) 1.7 V
MAX
V
I
DVCCQ
DVCC Current SCL/SDA = 0kHz 0.25 µA
V
DVCC_UVLO
DVCC UVLO 1.0 V
ADDRESS I
2
C Address 0001_001[R/W]b
V
IH
,
SDA,SCL
Input High Threshold 70 % DVCC
V
IL
,
SDA,SCL
Input Low Threshold 30 % DVCC
I
IH
,
SDA,SCL
Input Leakage High SDA, SCL = DVCC –1 1 µA