LTC3100
6
3100fb
For more information www.linear.com/LTC3100
Maximum Load Current During
Start-Up vs V
IN
V
INBST
(V)
0.7
1
100
1000
0.9
1.1
0.8
1
1.2 1.3
10
3100 G07
V
BST
= 1.8V, RESISTIVE LOAD
V
BST
= 1.8V, CONSTANT-CURRENT LOAD
V
BST
= 3.3V, RESISTIVE LOAD
V
BST
= 3.3V, CONSTANT-CURRENT LOAD
V
BST
= 5V, RESISTIVE LOAD
V
BST
= 5V, CONSTANT-CURRENT LOAD
TYPICAL PERFORMANCE CHARACTERISTICS
Maximum Output Current vs V
IN
Burst Mode Threshold
Current vs V
IN
Start-Up Voltage vs Temperature
V
OUT
and I
IN
During Soft-Start
Output Voltage Ripple in Fixed
Frequency and Burst Mode Operation
T
A
= 25癈, unless otherwise specified.
Step-Up DC/DC Converter
No-Load Input Current vs V
IN
,
Mode = Open, LDO and Buck Off
V
INBST
(V)
0
400
600
1
2
3
200
300
100
0
500
0.5 1.5
4 4.5
2.5 3.5
3100 G06
V
OUT
= 1.8V
V
OUT
= 3.3V
V
OUT
= 5V
V
INBST
(V)
1.0 40
50
60
2.5
3.5
3100 G08
30
20
1.5 2.0
3.0
4.0 4.5
10
0
L = 3.3礖
V
OUT
= 1.8V
V
OUT
= 3.3V
V
OUT
= 5V
TEMPERATURE (癈)
45
0.70
0.85
15 15 45
0.60
0.65
0.55
0.50
0.80
0.75
30 0
75 90
30 60
3100 G09
3100 G10
500祍/DIV
I
IN
200mA/DIV
V
BST
1V/DIV
3100 G11
0.5祍/DIV
100mA LOAD
20mV/DIV
20祍/DIV
5mA LOAD
20mV/DIV
V
BST
C
OUT
= 20礔
V
INBST
(V)
1.0
0
20
60
80
100
3.0
180
3100 G05
40
2.0
1.5
3.5 4.0
2.5
4.5
120
140
160
V
OUT
= 5V
V
OUT
= 3.3V
V
OUT
= 1.8V
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