LTC3101 Linear Technology, LTC3101 Datasheet - Page 5

• Manufacturer Part Number: LTC3101
• Description: Multi-Output DC/DC Converter and PowerPath Controller
• Manufacturer: Linear Technology

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TYPICAL PERFORMANCE CHARACTERISTICS
100
100
60
60
35
30
20
10
90
80
70
50
40
30
20
10
90
80
70
50
40
30
20
10
25
15
0
0
5
0
1.5
0.1
1
Buck Effi ciency
2 AA Cells to 1.5V
Buck-Boost Effi ciency
2 AA Cells to 3.3V
Buck Burst Mode Threshold
L = 4.7μH
Burst Mode OPERATION
OPERATION
Burst Mode
SUPPLY VOLTAGE, V
2.5
1
LOAD CURRENT (mA)
PWM Mode
LOAD CURRENT (mA)
10
PWM Mode
3.5
10
V
BAT
OUT
V
V
100
OR V
OUT
OUT
= 0.8V
100
L = 4.7μH
V
V
L = 4.7μH
V
V
4.5
= 1.2V
= 1.8V
USB
BAT
BAT
BAT
BAT
= 3.2V
= 1.8V
= 3.2V
= 1.8V
(V)
3101 G01
3101 G04
3101 G07
1000
1000
5.5
100
100
60
60
90
80
70
50
40
30
20
10
90
80
70
50
40
30
20
10
70
60
50
40
30
20
10
0
0
0
0.1
1
1
Buck Effi ciency
2 AA Cells to 1.2V
Buck-Boost Effi ciency
USB (5V) to 3.3V
No-Load Quiescent Current in
Burst Mode Operation
Burst Mode OPERATION
L = 4.7μH
OPERATION
Burst Mode
SUPPLY VOLTAGE, V
2
1
BOTH BUCKS DISABLED
BUCK-BOOST ENABLED
BUCK-BOOST ENABLED
LOAD CURRENT (mA)
LOAD CURRENT (mA)
BUCK1, BUCK2 AND
10
PWM Mode
PWM Mode
3
10
BAT
4
100
OR V
100
L = 4.7μH
V
V
USB
BAT
BAT
5
(V)
= 3.2V
= 1.8V
(T
3101 G02
3101 G05
3101 G08
A
1000
1000
= 25°C unless otherwise specifi ed)
6
100
100
60
60
90
80
70
50
40
30
20
10
90
80
70
50
40
30
20
10
20
18
16
14
12
10
0
0
8
6
4
2
0
0.1
1
1
Buck Effi ciency
USB (5V) to 1.8V
Buck-Boost Effi ciency
Li-Ion to 3.3V
Standby Quiescent Current
L = 4.7μH
OPERATION
LDO AND HSO OUTPUTS ACTIVE
PWRON = 0V, PWRKEY= FLOATING
Burst Mode
SUPPLY VOLTAGE, V
OPERATION
Burst Mode
2
1
LOAD CURRENT (mA)
LOAD CURRENT (mA)
10
PWM Mode
3
PWM Mode
LTC3101
10
BAT
4
100
OR V
100
L = 4.7μH
V
V
USB
BAT
BAT
5
= 3.0V
= 4.2V
(V)
3101 G03
3101 G06
3101 G09
5
1000
3101f
1000
6