LTC4099 Linear Technology Corporation, LTC4099 Datasheet - Page 4

• Manufacturer Part Number: LTC4099
• Description: I2C Controlled USB Power Manager/Charger
• Manufacturer: Linear Technology Corporation

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ELECTRICAL CHARACTERISTICS
LTC4099
erature range, otherwise specifi cations are at T
otherwise noted.
SYMBOL
V
V
t
t
V
R
T
Bat-Track External Switching Regulator Control
V
ΔV
V
I
R
VH
VL
Overvoltage Protection
V
V
I
t
Overtemperature Battery Conditioner
I
V
NTC
V
V
V
I
4
TERM_RANGE
BADBAT
WALLQ
OVSENSQ
RISE
DISCHARGE
NTC
TRKL
LIM
WALL
ALLOW
TOO_COLD
TOO_WARM
V
RECHRG
C/x
ON_CHG
OUT
ACPR
OVCUTOFF
OVGATE
OVERTEMP
WALL
ACPR
TRKL
ACPR
PARAMETER
Trickle Charge Threshold Voltage
Trickle Charge Hysteresis Voltage
Recharge Battery Threshold Voltage
Safety Timer Termination Period Range
Bad Battery Termination Time
Full Capacity Charge Indication PROG
Voltage (Note 5)
Battery Charger Power FET
On-Resistance (Between V
Junction Temperature in Constant-
Temperature Mode
Absolute WALL Input Threshold
Differential WALL Input Threshold
Regulation Target Under V
WALL Quiescent Current
ACPR Pull-Down Strength
ACPR High Voltage
ACPR Low Voltage
Overvoltage Protection Threshold
OVGATE Output Voltage
OVSENS Quiescent Current
OVGATE Time to Reach Regulation
Overtemperature Battery Discharge
Current
Maximum Allowed Overtemperature
Battery Voltage
Cold Temperature Fault Threshold
Voltage
Hot Temperature Fault Threshold Voltage Falling Threshold
Critically High Temperature Fault
Threshold Voltage
NTC Leakage Current
C
OUT
Control
and BAT)
A
= 25°C. V
CONDITIONS
BAT Rising
Threshold Voltage Relative to V
Selectable by I
BAT = V
BAT < V
COVERX1/0 = 00
COVERX1/0 = 01
COVERX1/0 = 10
COVERX1/0 = 11
I
Selectable by I
Rising Threshold
Falling Threshold
WALL–BAT Rising Threshold
WALL–BAT Falling Threshold
I
I
Rising Threshold, R
Input Below V
Input Above V
V
C
Only When Enabled via I
Only When Enabled via I
Rising Threshold
Hysteresis
Hysteresis
Falling Threshold
Hysteresis
NTC = NTCBIAS
BAT
ACPR
ACPR
OVSENS
OVGATE
= 200mA
= 0mA
= 0mA
BUS
The
TRKL
FLOAT
= 1nF
= 5V
= 5V, BAT = 3.8V, DV
l
OVCUTOFF
denotes the specifi cations which apply over the full operating temp-
OVCUTOFF
2
2
C, Timer Starts When
C
OVSENS
2
2
C Control
C Control
= 6.2k
FLOAT
CC
= 3.3V, R
PROG
MIN
4.15
6.10
72.3
31.3
21.9
–75
190
490
–50
2.7
0.4
3.5
90
40
0
= 1.02k, R
1.88 • V
BAT + 0.3
85, 105
–100
V
2.85
0.18
6.35
3.85
73.8
32.6
22.8
TYP
130
100
200
500
130
150
180
1-8
0.5
4.3
3.2
2.5
3.6
3.3
50
90
37
40
50
OUT
0
0
CLPROG
OVSENS
= 3.01k, unless
–125
MAX
4.45
6.70
75.3
33.9
23.7
110
210
510
0.6
60
50
12
50
3
%NTCBIAS
%NTCBIAS
%NTCBIAS
%NTCBIAS
%NTCBIAS
UNITS
Hour
Hour
4099f
mV
mV
mV
mV
mV
mV
mV
mV
mA
mV
ms
μA
μA
nA
°C
Ω
V
V
V
V
V
V
V
V
V
V