LTC3554-1_15 Datasheet, PDF (3/36 Pages) Linear Technology – Micropower USB Power Manager with Li-Ion Charger and Two Step-Down Regulators

LTC3554/LTC3554-1/
LTC3554-2/LTC3554-3
Power Manager Electrical Characteristics The l denotes specifications that
apply over the full operating junction temperature range, otherwise specifications are at T_A = 25°C (Note 2), V_BUS = 5V, V_BAT = 3.8V,
HPWR = SUSP = PWR_ON1 = PWR_ON2 = 0V, R_PROG = 1.87k, STBY = High, unless otherwise noted.
SYMBOL PARAMETER
CONDITIONS
MIN TYP MAX UNITS
No-Load Quiescent Currents
I_BATQ
I_BATQC
I_BUSQ
Battery Drain Current
Battery Drain Current, V_BUS Available
V_BUS Input Current
I_OUT = 0 (Note 5)
V_BUS = 0V (Hard Reset)
V_BUS = 0V
V_BUS = 0V, PWR_ON1 = PWR_ON2 = 3.8V
V_BAT = V_FLOAT, Timer Timed Out
100mA, 500mA Modes
SUSP = 5V (Suspend Mode)
0.2
2
µA
3
5
µA
6.5
12
µA
5
8
µA
300
500
µA
15
30
µA
I_BVINQ
BVIN Input Current
Shutdown Input Current
One Buck Enabled, Standby Mode
Both Bucks Enabled, Standby Mode
One Buck Enabled
Both Bucks Enabled
V_BVIN = 3.8V, V_BUS = 0V (Note 8)
PWR_ON1 = STBY = 3.8V
PWR_ON1 = PWR_ON2 = STBY = 3.8V
PWR_ON1 = 3.8V, STBY = 0V
PWR_ON1 = PWR_ON2 = 3.8V, STBY = 0V
0.01
1
µA
1.5
3
µA
3
6
µA
18
35
µA
36
70
µA
Input Power Supply
V_BUS
I_BUS(LIM)
Input Supply Voltage
Total Input Current
HPWR = 0V (100mA)
HPWR = 5V (500mA)
4.35
5.5
V
l 80
90
100
mA
l 400 450
500
mA
V_UVLO
V_BUS Undervoltage Lockout
Rising Threshold
Falling Threshold
3.8
3.9
V
3.5
3.6
V
V_DUVLO
V_BUS to BAT Differential Undervoltage
Lockout
Rising Threshold
Falling Threshold
200
300
mV
0
50
mV
R_{ON_ILIM} Input Current Limit Power FET
On-Resistance (Between V_BUS and V_OUT)
Battery Charger
350
mΩ
V_FLOAT
V_BAT Regulated Output Voltage
I_CHG
V_PROG
V_PROG,TRKL
h_PROG
I_TRKL
V_TRKL
Constant-Current Mode Charge Current
PROG Pin Servo Voltage
PROG Pin Servo Voltage in Trickle Charge
Ratio of I_BAT to PROG Pin Current
Trickle Charge Current
Trickle Charge Threshold Voltage
ΔV_RECHRG
t_TERM
t_BADBAT
h_C/10
R_{ON_CHG}
T_LIM
Recharge Battery Threshold Voltage
Safety Timer Termination Period
Bad Battery Termination Time
End-of-Charge Indication Current Ratio
Battery Charger Power FET
On-Resistance (Between V_OUT and BAT)
Junction Temperature in Constant
Temperature Mode
LTC3554/LTC3554-2/LTC3554-3
LTC3554/LTC3554-2/LTC3554-3, 0°C < T_A < 85°C
LTC3554-1
LTC3554-1, 0°C < T_A < 85°C
R_PROG = 1.87k, 0 ≤ T_A ≤ 85°C
V_BAT < V_TRKL
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)
I_BAT = 200mA
4.179 4.2
4.165 4.2
4.079 4.1
4.065 4.1
380 400
1
0.1
750
30
40
2.9
2.6 2.75
–75 –100
3.2
4
0.4
0.5
0.085 0.1
220
110
4.221
4.235
4.121
4.135
420
50
3
–115
5
0.63
0.115
V
V
V
V
mA
V
V
mA/mA
mA
V
V
mV
Hour
Hour
mA/mA
mΩ
°C
NTC
V_COLD
V_HOT
Cold Temperature Fault Threshold Voltage
Hot Temperature Fault Threshold Voltage
Rising NTC Voltage
Hysteresis
Falling NTC Voltage
Hysteresis
75
76
1.3
34
35
1.3
77
%V_BUS
%V_BUS
36
%V_BUS
%V_BUS
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