LTC3525L-3_15 Datasheet, PDF (3/12 Pages) Linear Technology – 400mA Micropower Synchronous Step-Up DC/DC Converter with Output Disconnect

LTC3525L-3
TYPICAL PERFORMANCE CHARACTERISTICS T_A = 25°C unless otherwise noted.
Maximum Output Current vs V_IN
(for V_OUT to Drop 2.5%)
300
Maximum Startup Load vs V_IN
(Resistive Load)
30
No-Load Input Current vs V_IN
30
250
25
25
200
20
20
150
15
15
100
10
10
50
5
5
0
0.5
1.0
1.5
2.0
2.5
V_IN (V)
3525L G01
0
0.60 0.65 0.70 0.75 0.80 0.85 0.90 0.95 1.00
V_IN (V)
3525L G02
0
1.0
1.5
2.0
2.5
3.0
V_IN (V)
3525L G03
Efficiency and Power Loss
vs Load
100
100
90
80
10
EFFICIENCY
70
60
1
POWER LOSS
50
40
0.1
30
20
0.01 0.1
1
10
LOAD (mA)
V_IN = 2.4V
V_IN = 1.2V _0.01
100 1000
3525L G24
Load Regulation
2.5
V_IN = 1.2V
2.0
1.5
1.0
0.5
C_OUT = 22µF
0
–0.5
C_OUT = 10µF
–1.0
–1.5
–2.0
–2.5
0
10 20 30 40 50 60 70 80
LOAD (mA)
3525L G06
Light Load Burst Frequency
vs Load
40
35
30
25
20
C_OUT = 10µF
15
10
C_OUT = 22µF
5
0
0.1
1
LOAD (mA)
10
3525L G12
V_OUT Variation vs Temperature
(Normalized to 25°C)
0.4
0.3
0.2
0.1
0
–0.1
–0.2
–0.3
–0.4
–40–30–20–10 0 10 20 30 40 50 60 70 80
TEMPERATURE (°C)
3525L G13
Startup Delay Coming Out of
Shutdown
120
100
80
60
40
20
0
1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5
V_IN (V)
3525L G14
3525lfa
3