LTC3525-3.3 Linear Technology Corporation, LTC3525-3.3 Datasheet - Page 5

• Manufacturer Part Number: LTC3525-3.3
• Description: 400mA Micropower Synchronous Step-Up DC/DC Converter
• Manufacturer: Linear Technology Corporation

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TYPICAL PERFOR A CE CHARACTERISTICS
–0.5
–1.0
–1.5
–2.0
–2.5
–0.1
–0.2
–0.3
–0.4
2.5
2.0
1.5
1.0
0.5
0.4
0.3
0.2
0.1
0
0
–40–30–20–10 0
0
LTC3525-5 Load Regulation
V
(Normalized to 25°C)
V
OUT
IN
= 3.6V
Variation vs Temperature
50
TEMPERATURE (°C)
I
I
I
40mA
80mA
OUT
OUT
OUT
C
5mA
OUT
10
LOAD (mA)
=
=
=
= 10µF
20
100
LTC3525-3.3 Output Voltage
Ripple
V
C
IN
OUT
30
= 1.2V
= 10µF
40 50
C
OUT
150
W
= 22µF
60
70
50µs/DIV
3525 G10
3525 G13
U
80
200
1200
1100
1000
900
800
700
600
500
400
300
120
100
80
60
40
20
0
1.0
1.0
3525 G16
Switching Frequency vs V
Startup Delay Coming Out of
Shutdown
L = 10µH
1.5
1.5
50mV/DIV
2.0
2.0
LTC3525-3.3
2.5
2.5
V
V
IN
IN
(V)
(V)
3.0
3.0
I
I
I
40mA
80mA
OUT
OUT
OUT
5mA
LTC3525-5
3.5
3.5
=
=
=
IN
LTC3525-3.3 Output Voltage
Ripple
V
C
IN
OUT
4.0
4.0
= 1.2V
T
3525 G11
3525 G14
A
= 22µF
LTC3525-3.3/LTC3525-5
= 25°C unless otherwise noted.
4.5
4.5
100mA/DIV
CURRENT
50µs/DIV
1V/DIV
INPUT
V
OUT
40
35
30
25
20
15
10
5
0
0.1
LTC3525-3.3 Input Current and
V
Light Load Burst Frequency
vs Load
OUT
V
IN
= 1.2V
at Startup
3525 G17
C
LOAD (mA)
500µs/DIV
OUT
50mV/DIV
= 10µF
1
C
OUT
= 22µF
3525 G15
3525 G12
5
3525f
10