LTC3553 Linear Technology Corporation, LTC3553 Datasheet - Page 7

• Manufacturer Part Number: LTC3553
• Description: Micropower USB Power Manager
• Manufacturer: Linear Technology Corporation

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TYPICAL PERFORMANCE CHARACTERISTICS
0.35
0.30
0.25
0.20
0.50
0.45
0.40
400
350
300
250
200
3
1
0
5
4
2
–75 –50 –25
–75
–75
Battery Drain Current
vs Temperature (Suspend Mode)
R
vs Temperature
V
vs Temperature
V
HPWR = L
V
V
I
OUT
BUS
ON
BUS
BUS
BAT
–50
–50
from V
= 200mA
= 5V
= 3.8V
= 5V
Supply Current
–25
–25
TEMPERATURE (°C)
TEMPERATURE (°C)
TEMPERATURE (°C)
0
0
0
BUS
25
25
25
to V
50
50
50
OUT
75 100
75 100 125
75 100 125
125
3553 G01
3553 G07
3553 G04
150
150
150
300
100
500
400
200
480
400
320
240
160
15
10
25
20
80
5
0
0
–75
0
–75
–75
V
vs Temperature (Suspend Mode)
V
vs Temperature
Charge Current vs Temperature
(Thermal Regulation)
V
V
V
HPWR = H
R
BUS
BUS
BUS
BUS
BUS
PROG
–50
–50
–50
= 5V
= 5V
= 5V
Supply Current
Current Limit
–25
= 1.87k
–25
–25
TEMPERATURE (°C)
TEMPERATURE (°C)
TEMPERATURE (°C)
0
0
0
25
25
25
50
50
HPWR = L
HPWR = H
50
75 100 125
75 100 125
75
100 125
3553 G02
3553 G05
3553 G08
150
150
T
A
= 25°C, unless otherwise specifi ed.
–100
300
200
100
600
500
400
300
200
100
600
500
400
18
16
14
12
10
8
6
4
2
0
0
0
–50 –30 –10
Battery Charge Current and
Voltage vs Time
0
0
Battery Drain Current
vs Temperature
V
vs Load Current
920mAhr CELL
V
R
V
STBY = 3.8V
REGULATORS LOAD = 0mA
R
BUS
BUS
PROG
BAT
PROG
ONLY LDO ON
1
= 3.8V
= 5V
BUCK AND LDO ON
100
and Battery Current
= 1.87k
= 1.87k
2
LOAD CURRENT (mA)
TEMPERATURE (°C)
BUCK AND LDO OFF
10
200
3
TIME (hour)
HARD RESET
(DISCHARGING)
30
C/10
I
VBUS
4
I
50
ONLY BUCK ON
LOAD
SAFETY TIMER
TERMINATION
300
CHRG
LTC3553
V
I
BAT
BAT
5
70
I
I
(CHARGING)
BAT
BAT
6
90
400
110
7
3553 G03
3553 G06
3553 G09
130
500
8
7
6
5
4
3
2
1
0
3553f