LTC3407
U W
TYPICAL PERFOR A CE CHARACTERISTICS
Reference Voltage vs
Temperature
R
DS(ON) vs Input Voltage
RDS(ON) vs Temperature
0.615
0.610
0.605
0.600
0.595
0.590
0.585
500
450
400
350
300
250
200
550
500
450
400
350
300
250
200
150
100
V
= 3.6V
V
= 2.7V
IN
T
= 25°C
IN
A
V
= 3.6V
IN
V
= 4.2V
IN
MAIN
SWITCH
SYNCHRONOUS
SWITCH
MAIN SWITCH
SYNCHRONOUS SWITCH
3
2
50
TEMPERATURE (°C)
100 125
5
7
50
TEMPERATURE (°C)
100 125 150
–50 –25
0
25
75
1
4
6
–50 –25
0
25
75
V
(V)
IN
3407 G07
3407 G08
3407 G09
Load Regulation
Efficiency vs Load Current
Efficiency vs Load Current
100
95
90
85
80
75
70
65
60
100
95
90
85
80
75
70
65
60
4
3
2.7V
Burst Mode OPERATION
3.3V
Burst Mode OPERATION
2
4.2V
1
0
PULSE SKIP MODE
PULSE SKIP MODE
–1
–2
–3
–4
V
= 3.6V, V
= 1.8V
V
= 3.6V, V
= 1.8V
OUT
V
= 2.5V Burst Mode OPERATION
IN
OUT
IN
OUT
NO LOAD ON OTHER CHANNEL
10 100 1000
LOAD CURRENT (mA)
NO LOAD ON OTHER CHANNEL
10 100 1000
LOAD CURRENT (mA)
CIRCUIT OF FIGURE 1
1
10
100
1000
1
1
LOAD CURRENT (mA)
3407 G10
3407 G11
3407 G12
Efficiency vs Load Current
Line Regulation
Efficiency vs Load Current
0.5
0.4
100
95
90
85
80
75
70
65
60
100
95
90
85
80
75
70
65
60
V
= 1.8V
OUT
OUT
I
= 200mA
2.7V
2.7V
3.3V
T
= 25°C
3.3V
4.2V
A
0.3
0.2
4.2V
0.1
0
–0.1
–0.2
–0.3
–0.4
–0.5
V
= 1.2V Burst Mode OPERATION
V
= 1.5V Burst Mode OPERATION
OUT
OUT
CIRCUIT OF FIGURE 1
CIRCUIT OF FIGURE 1
2
6
1
10
100
1000
1
10
100
1000
3
4
5
LOAD CURRENT (mA)
LOAD CURRENT (mA)
V
IN
(V)
3407 G15
3407 G13
3407 G14
sn3407 3407fs
4
Linear [ Linear ]
