LTC3547
U W
TYPICAL PERFOR A CE CHARACTERISTICS
Oscillator Frequency
vs Temperature
Switch Leakage vs Temperature
Switch Leakage vs Input Voltage
500
400
300
200
100
0
2.6
50
40
30
20
10
0
2.5
2.4
V
= 4.2V
IN
2.3
2.2
2.1
2.0
1.9
V
V
= 3.6V
= 2.7V
IN
IN
SYNCHRONOUS
SWITCH
SYNCHRONOUS
SWITCH
MAIN SWITCH
MAIN SWITCH
1.8
3
3.5
4.5
(V)
5
5.5
6
2.5
4
–25
0
50
75 100 125
–25
0
50
75 100 125
–50
25
–50
25
V
TEMPERATURE (°C)
TEMPERATURE (°C)
IN
3547 G06
3547 G04
3547 G05
Reference Voltage
vs Temperature
R
vs Input Voltage
R
vs Temperature
DS(ON)
DS(ON)
1.3
1.2
1.1
1.0
0.9
0.8
0.7
0.6
0.5
0.4
612
608
1.0
0.9
0.8
0.7
0.6
0.5
0.4
V
= 2.7V
IN
MAIN SWITCH
V
= 3.6V
IN
604
600
596
SYNCHRONOUS
SWITCH
MAIN SWITCH
SYNCHRONOUS
SWITCH
592
588
V
= 4.2V
IN
–25
0
50
75 100 125
–25
0
50
75
100
–50
25
–50
25
3
3.5
4.5
(V)
5
5.5
6
2.5
4
TEMPERATURE (°C)
TEMPERATURE (°C)
V
IN
3547 G09
3547 G07
3547 G08
Efficiency vs Load Current
Efficiency vs Load Current
Efficiency vs Load Current
100
90
80
70
60
50
40
30
20
10
0
100
90
80
70
60
50
40
30
20
10
0
100
90
80
70
60
50
40
30
20
10
0
V
OUT
= 2.5V
V
= 1.2V
V
= 1.8V
OUT
OUT
V
V
V
= 2.7V
= 3.6V
= 4.2V
V
V
V
= 2.7V
= 3.6V
= 4.2V
V
V
V
= 2.7V
= 3.6V
= 4.2V
IN
IN
IN
IN
IN
IN
IN
IN
IN
0.1
1
10
100
1000
0.1
1
10
100
1000
0.1
1
10
100
1000
OUTPUT CURRENT (mA)
OUTPUT CURRENT (mA)
OUTPUT CURRENT (mA)
3547 G12
3547 G10
3547 G11
3547fa
4
Linear Systems [ Linear Systems ]
