LTC3557 LINER [Linear Technology], LTC3557 Datasheet - Page 6

• Manufacturer Part Number: LTC3557
• Description: USB Power Manager with Li-Ion Charger and Three Step-Down Regulators
• Manufacturer: LINER [Linear Technology]

LTC3557/LTC3557-1
TYPICAL PERFORMANCE CHARACTERISTICS
6
1200
1100
1000
600
500
100
600
500
400
300
200
900
800
700
400
300
200
100
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
0
0
–50
–50
0
Input Supply Current
vs Temperature
Input Current Limit
vs Temperature
Battery Current and Voltage
vs Time (LTC3557)
1450mAhr
CELL
V
R
R
V
R
V
1x MODE
BUS
PROG
CLPROG
BUS
BUS
CLPROG
–25
–25
= 5V
= 5V
= 5V
1
= 2k
= 2k
= 2.1k
0
0
TEMPERATURE (°C)
TEMPERATURE (°C)
2
TIME (HOUR)
25
25
3
50
C/10
50
4
10x MODE
TERMINATION
CHRG
75
75
5x MODE
1x MODE
V
I
BAT
BAT
SAFETY
TIMER
100
100
5
35571 G07
35571 G01
35571 G04
125
125
6
6
5
1
0
4
3
2
0.06
0.10
0.08
0.04
0.02
300
280
260
240
220
180
160
140
120
100
0
0
–50
4.22
4.20
4.18
4.16
4.14
4.12
4.10
4.06
–50 –25
4.08
Input Supply Current
vs Temperature (Suspend Mode)
Input R
V
I
OUT
BUS
V
0
–25
FLOAT
= 400mA
= 5V
ON
LTC3557
LTC3557-1
200
V
0
0
TEMPERATURE (°C)
Load Regulation
TEMPERATURE (°C)
BUS
vs Temperature
= 5V
25
25
400
I
BAT
V
BUS
50
50
V
(mA)
BUS
= 4.5V
600
75
75
= 5.5V
100
100
V
10x MODE
BUS
800
35571 G05
T
35571 G02
A
= 5V
= 25°C unless otherwise specifi ed
125
35571 G08
125
1000
0.20
0.18
0.16
0.14
0.12
0.10
0.08
0.06
0.04
0.02
4.22
4.20
4.18
4.16
4.14
4.12
4.10
4.08
4.06
600
500
200
400
300
100
0
0
–50
–50
–50
Battery Drain Current
vs Temperature
Charge Current vs Temperature
(Thermal Regulation)
Battery Regulation (Float)
Voltage vs Temperature
V
MODE = 3.8V
I
V
10x MODE
R
BAT
BAT
BUS
2 BUCKS ENABLED
PROG
–25
–25
–25
= 2mA
= 3.8V
= 5V
= 2k
0
0
0
TEMPERATURE (°C)
TEMPERATURE (°C)
TEMPERATURE (°C)
3 BUCKS ENABLED
1 BUCK ENABLED
25
25
25
50
50
LTC3557
LTC3557-1
N0 BUCKS ENABLED
50
75
75
75
100
100
100
35571 G03
35571 G06
35571 G09
35571fc
125
125
125