Datasheet

LTC3525-3/
LTC3525-3.3/LTC3525-5
4
3525fb
TYPICAL PERFORMANCE CHARACTERISTICS
Maximum Output Current vs V
IN
(for V
OUT
to Drop 2.5%)
Maximum Startup Load vs V
IN
(Resistive Load) No-Load Input Current vs V
IN
LTC3525-3 Efficiency and Power
Loss vs Load
LTC3525-5 Efficiency and Power
Loss vs Load
LTC3525-3.3 Load Regulation
LTC3525-3.3 Load Regulation LTC3525-5 Load Regulation
T
A
= 25°C unless otherwise noted.
LTC3525-3.3 Efficiency and Power
Loss vs Load
V
IN
(V)
0.5 1.0
I
OUT
(mA)
300
250
200
150
100
50
0
2.5 3.5
3525 G01
1.5 2.0 3.0 4.0 4.5
LTC3525-5
LTC3525-3.3
LTC3525-3
3525 G02
250
200
150
100
50
0
LOAD (mA)
V
IN
(V)
0.5
1.0
1.5 2.0 2.5
3.0
LTC3525-3.3
LTC3525-5
3525 G03
V
IN
(V)
1.0 2.5 3.51.5 2.0 3.0 4.0 4.5
I
IN
(µA)
50
45
40
35
30
25
20
15
10
5
0
LTC3525-5
LTC3525-3.3
LTC3525-3
LOAD (mA)
0.01 0.1
EFFICIENCY (%)
100
90
80
70
60
50
40
30
20
POWER LOSS (mW)
100
10
1
0.1
0.01
1 10 1000100
3525 G24
EFFICIENCY
POWER LOSS
V
IN
= 2.4V
V
IN
= 1.2V
LOAD (mA)
0.01 0.1
EFFICIENCY (%)
100
90
80
70
60
50
40
30
20
POWER LOSS (mW)
100
10
1
0.1
0.01
1 10 1000100
3525 G04
EFFICIENCY
POWER LOSS
V
IN
= 3V
V
IN
= 2.4V
V
IN
= 1.2V
LOAD (mA)
0.01 0.1
EFFICIENCY (%)
100
90
80
70
60
50
40
30
20
10
0
POWER LOSS (mW)
1000
100
10
1
0.1
0.01
1 10 1000100
3525 G05
EFFICIENCY
POWER LOSS
V
IN
= 3.6V
V
IN
= 2.4V
V
IN
= 1.2V
3525 G06
LOAD (mA)
0 40 602010 30 50 70 80
CHANGE IN V
OUT
(%)
2.5
2.0
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
–2.0
–2.5
C
OUT
= 22µF
C
OUT
= 10µF
V
IN
= 1.2V
3525 G07
LOAD (mA)
0 140 16012010020 40 60 80 180
CHANGE IN V
OUT
(%)
2.5
2.0
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
–2.0
–2.5
C
OUT
= 22µF
C
OUT
= 10µF
V
IN
= 2.4V
3525 G08
LOAD (mA)
0 402010 30 50 60
CHANGE IN V
OUT
(%)
2.5
2.0
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
–2.0
–2.5
C
OUT
= 22µF
C
OUT
= 10µF
V
IN
= 1.2V