Datasheet

LTC4098-3.6
3
409836f
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
I
VOUT
V
OUT
Current Available Before
Discharging Battery
1x Mode
5x Mode
10x Mode
Low Power Suspend Mode
High Power Suspend Mode
135
659
1231
0.32
2.04
mA
mA
mA
mA
mA
V
CLPROG
CLPROG Servo Voltage in Current Limit 1x, 5x, 10x Modes
Suspend Modes
1.188
100
V
mV
V
UVLO
V
BUS
Undervoltage Lockout Rising Threshold
Falling Threshold 3.95
4.30
4.00
4.35 V
V
V
OUT
V
OUT
Voltage 1x, 5x, 10x Modes, 0V < BAT ≤ 3.6V,
I
VOUT
= 0mA, Battery Charger Off
3.1 BAT + 0.4 4.3 V
USB Suspend Modes, I
VOUT
= 250µA 3.7 3.8 3.9 V
f
OSC
Switching Frequency 1.96 2.25 2.65 MHz
R
PMOS
PMOS On-Resistance 0.18
Ω
R
NMOS
NMOS On-Resistance 0.30
Ω
I
PEAK
Peak Inductor Current Clamp 1x Mode
5x Mode
10x Mode
1.2
1.7
3
A
A
A
R
SUSP
Suspend LDO Output Resistance 15
Ω
Bat-Track External Switching Regulator Control
V
WALL
Absolute WALL Input Threshold Rising Threshold
Falling Threshold
4.1 4.25
3.2
4.4 V
V
DV
WALL
Differential WALL Input Threshold WALL-BAT Rising Threshold
WALL-BAT Falling Threshold 0
90
25 50
mV
mV
Regulation Target 3.5 BAT + 0.4 V
WALL Quiescent Current 100 µA
ACPR High Voltage I
ACPR
= 0mA V
OUT
V
ACPR Low Voltage I
ACPR
= 0mA 0 V
Overvoltage Protection
V
OVP
Overvoltage Protection Threshold Rising Threshold, R
OVSENS
= 6.04k 6.10 6.35 6.70 V
V
OVGATE
OVGATE Output Voltage Input Below V
OVP
Input Above V
OVP
1.88 • V
OVSENSE
0
12 V
V
t
RISE
OVGATE Time to Reach Regulation C
OVGATE
= 1nF 2.2 ms
Battery Charger
V
FLOAT
BAT Regulated Output Voltage
0°C ≤ T
A
≤ 85°C
3.582
3.565
3.6
3.6
3.618
3.635
V
V
I
CHG
Constant-Current Mode Charge Current R
PROG
= 1k, 10x Mode
R
PROG
= 5k, 5x, 10x Modes
980
192
1030
206
1080
220
mA
mA
I
BAT
Battery Drain Current V
BUS
> V
UVLO
, PowerPath Switching
Regulator On, Battery Charger Off,
I
VOUT
= 0µA
3.7 5 µA
V
BUS
= 0V, I
VOUT
= 0µA (Ideal Diode
Mode)
25 35 µA
V
PROG
PROG Pin Servo Voltage 1.000 V
h
PROG
Ratio of I
BAT
to PROG Pin Current 1030 mA/mA
V
RECHRG
Recharge Battery Threshold Voltage Threshold Voltage Relative to V
FLOAT
–80 –100 –120 mV
ELECTRICAL CHARACTERISTICS
The l denotes the specifications which apply over the full operating temp-
erature range, otherwise specifications are at T
A
= 25°C (Note 2). V
BUS
= 5V, BAT = 3.3V, R
CLPROG
= 3.01k, unless otherwise noted.