LTC3577-4_15 Datasheet, PDF (4/52 Pages) Linear Technology – Highly Integrated Portable Product PMIC

LTC3577-3/LTC3577-4
ELECTRICAL CHARACTERISTICS Power Manager. The l denotes the specifications which apply over the
full operating temperature range, otherwise specifications are at T_A = 25°C. V_BUS = 5V, V_BAT = 3.8V, I_LIM0 = I_LIM1 = 5V, WALL = 0V,
V_INLDO2 = V_INLOD1 = V_IN12 = V_IN3 = V_OUT, R_PROG = 2k, R_CLPROG = 2.1k, unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Input Power Supply
V_BUS
I_{BUS_LIM}
I_BUSQ
h_CLPROG
Input Supply Voltage
4.35
5.5
Total Input Current (Note 5)
I_LIM0 = 5V, I_LIM1 = 5V (1x Mode)
I_LIM0 = 0V, I_LIM1 = 0V (5x Mode)
I_LIM0 = 0V, I_LIM1 = 5V (10x Mode)
l 80
l 450
l 900
Input Quiescent Current, POFF State
1x, 5x, 10x Modes
I_LIM0 = 5V, I_LIM1 = 0V (Suspend Mode)
Ratio of Measured V_BUS Current to
CLPROG Program Current
90
100
475
500
950
1000
0.42
0.05
0.1
1000
V
mA
mA
mA
mA
mA
mA/mA
V_CLPROG
CLPROG Servo Voltage in Current
Limit
1x Mode
5x Mode
10x Mode
0.2
V
1.0
V
2.0
V
V_UVLO
V_BUS Undervoltage Lockout
Rising Threshold
Falling Threshold
3.8
3.9
V
3.5
3.7
V
V_DUVLO
V_BUS to V_OUT Differential Undervoltage Rising Threshold
Lockout
Falling Threshold
50
100
mV
–50
mV
R_{ON_ILIM}
Input Current Limit Power FET On-
Resistance (Between V_BUS and V_OUT)
Battery Charger
200
mΩ
V_FLOAT
V_BAT Regulated Output Voltage
LTC3577-3
LTC3577-3, 0 ≤ T_A ≤ 85°C
4.179 4.200 4.221
V
4.165 4.200 4.235
V
LTC3577-4
LTC3577-4, 0 ≤ T_A ≤ 85°C
4.079
4.1
4.121
V
4.065
4.1
4.135
V
I_CHG
Constant-Current Mode Charge Current R_PROG = 1k, Input Current Limit = 2A
l 950
1000
1050
mA
IC Not in Thermal Limit
R_PROG = 2k, Input Current Limit = 1A
l 465
500
535
mA
R_PROG = 5k, Input Current Limit = 0.4A l 180
200
220
mA
I_{BATQ_OFF}
Battery Drain Current, POFF State,
Buck3 Disabled, No Load (Note 15)
V_BAT = 4.3V, Charger Time Out
V_BUS = 0V
6
27
μA
55
100
μA
I_{BATQ_ON}
Battery Drain Current, PON State,
Buck3 Enabled (Notes 10, 15)
V_BUS = 0V, I_OUT = 0μA, No Load On
Supplies, Burst Mode Operation
130
200
μA
V_PROG,CHG
V_PROG,TRKL
PROG Pin Servo Voltage
PROG Pin Servo Voltage in Trickle
Charge
V_BAT > V_TRKL
V_BAT < V_TRKL
1.000
V
0.100
V
h_PROG
I_TRKL
V_TRKL
ΔV_RECHRG
t_TERM
t_BADBAT
h_C/10
R_{ON_CHG}
T_LIM
Ratio of I_BAT to PROG Pin Current
Trickle Charge Current
Trickle Charge Rising Threshold
Trickle Charge Falling Threshold
Recharge Battery Threshold Voltage
Safety Timer Termination Period
Bad Battery Termination Time
End-of-Charge Indication Current Ratio
V_BAT < V_TRKL
V_BAT Rising
V_BAT Falling
Threshold Voltage Relative to V_FLOAT
Timer Starts when V_BAT = V_FLOAT – 50mV
V_BAT < V_TRKL
(Note 6)
Battery Charger Power FET On-
Resistance (Between V_OUT and BAT)
Junction Temperature in Constant
Temperature Mode
1000
40
50
60
2.9
3.0
2.5
2.75
–75
–100
–125
3.2
4
4.8
0.4
0.5
0.6
0.085
0.1
0.11
200
110
mA/mA
mA
V
V
mV
Hour
Hour
mA/mA
mΩ
°C
357734fb
4