LTC3547 LINER [Linear Technology], LTC3547 Datasheet - Page 4

• Manufacturer Part Number: LTC3547
• Description: Dual Monolithic 300mA Synchronous Step-Down Regulator
• Manufacturer: LINER [Linear Technology]

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