Datasheet

LTC3108-1
4
31081fb
For more information www.linear.com/LTC3108-1
Typical perForMance characTerisTics
I
VOUT
and Efficiency vs V
IN
,
1:20 Ratio Transformer
Input Resistance vs V
IN
(V
OUT
Charging)
I
VOUT
vs V
IN
and Source Resistance,
1:20 Ratio
T
A
= 25°C, unless otherwise noted.
I
VOUT
and Efficiency vs V
IN
,
1:50 Ratio Transformer
I
VOUT
and Efficiency vs V
IN
,
1:100 Ratio Transformer
V
IN
(mV)
0
I
VOUT
(µA)
EFFICIENCY (%)
2500
3000
3500
2000
1500
100 200
400
300 500
500
0
1000
4000
50
60
70
40
30
10
0
20
80
31081 G01
I
VOUT
(V
OUT
= 4V)
EFFICIENCY
(V
OUT
= 4V)
I
VOUT
(V
OUT
= 0V)
C1 = 10nF
V
IN
(mV)
0
I
VOUT
(µA)
EFFICIENCY (%)
2000
2400
2800
1600
1200
100 200
400
300 500
400
0
800
3200
50
60
70
40
30
10
0
20
80
31081 G02
C1 = 4.7nF
I
VOUT
(V
OUT
= 4V)
EFFICIENCY
(V
OUT
= 4V)
I
VOUT
(V
OUT
= 0V)
V
IN
(mV)
0
I
VOUT
(µA)
EFFICIENCY (%)
1000
1200
800
600
100 200
400
300 500
200
0
400
1400
50
60
70
40
30
10
0
20
31081 G03
C1 = 1nF
I
VOUT
(V
OUT
= 4V)
EFFICIENCY
(V
OUT
= 4V)
I
VOUT
(V
OUT
= 0V)
V
IN
(mV)
0
INPUT RESISTANCE (Ω)
5
6
7
4
3
100 200
400
300 500
1
0
2
8
9
10
31081 G04
1:20 RATIO
1:50 RATIO
1:100 RATIO
V
IN
OPEN-CIRCUIT (mV)
I
VOUT
(µA)
100
10
1000
10000
0
31081 G05
0
200 300 500
100
400 600 700 800
1Ω
2Ω
5Ω
10Ω
C1 = 10nF
V
IN
(mV)
I
IN
(mA)
31081 G00
1000
100
10
1
10 100 1000
1:50 RATIO, C1 = 4.7n
1:100 RATIO, C1 = 1n
1:20 RATIO, C1 = 10n
I
IN
vs V
IN
, (V
OUT
= 0V)