LTC3527-1_15 Datasheet, PDF (4/22 Pages) Linear Technology – Dual 800mA/400mA, 1.2MHz/2.2MHz Synchronous Step-Up DC/DC Converters

LTC3527/LTC3527-1
TYPICAL PERFORMANCE CHARACTERISTICS (T_A = 25°C, unless otherwise noted)
Efficiency vs Load Current and V_IN
for V_OUT1 = 1.8V at 1.2MHz
100
1.2V _1.5V
90
BURST
1.2V
80
1V
70
1V
1.5V
60
FIXED
50
40
30
20
0.01
0.1
1
10 100 1000
LOAD CURRENT (mA)
35271 G01
Efficiency vs Load Current and V_IN
for V_OUT2 = 1.8V at 1.2MHz
100
1.2V 1.5V
90
BURST
1.2V
80
1V
1.5V
70
FIXED
1V
60
50
40
30
20
0.01
0.1
1
10 100 1000
LOAD CURRENT (mA)
35271 G02
Efficiency vs Load Current and V_IN
for V_OUT1 = 3.3V at 1.2MHz
100
2.4V 3V
3V
90 _BURST
1.8V
80
2.4V
70
1.8V
60
FIXED
50
40
30
20
0.01
0.1
1
10 100 1000
LOAD CURRENT (mA)
35271 G03
Efficiency vs Load Current and V_IN
for V_OUT1 = 3.3V at 2.2MHz
100
2.4V 3V
3V
90
BURST
80
1.8V
2.4V
70
1.8V
60
FIXED
50
40
30
20
0.01
0.1
1
10 100 1000
LOAD CURRENT (mA)
35271 G04
Efficiency vs Load Current and V_IN
for V_OUT2 = 3.3V at 1.2MHz
100
2.4V
3V
3V
90 _BURST
1.8V
80
2.4V
1.8V
70
60
FIXED
50
40
30
20
0.01
0.1
1
10 100 1000
LOAD CURRENT (mA)
35271 G05
Efficiency vs Load Current and V_IN
for V_OUT2 = 3.3V at 2.2MHz
100
2.4V 3V
3V
90
BURST
80
1.8V
1.8V
2.4V
70
60
FIXED
50
40
30
20
0.01
0.1
1
10 100 1000
LOAD CURRENT (mA)
35271 G06
Efficiency vs Load Current and V_IN
for V_OUT1 = 5V at 1.2MHz
100
3.6V 4.2V
90
BURST
80
2.4V
70
2.4V
4.2V
3.6V
60
50
40
FIXED
30
20
0.01
0.1
1
10 100 1000
LOAD CURRENT (mA)
35271 G07
Efficiency vs Load Current and V_IN
for V_OUT2 = 5V at 1.2MHz
100
3.6V 4.2V
4.2V
90
80 ^BURST
2.4V
3.6V
2.4V
70
60
50
40
FIXED
30
20
0.01
0.1
1
10 100
LOAD CURRENT (mA)
1000
35271 G08
35271fc
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