LTC3407A-2 Linear Technology, LTC3407A-2 Datasheet - Page 5

• Manufacturer Part Number: LTC3407A-2
• Description: Dual Synchronous 800mA2.25MHz Step-Down DC/DC Regulator
• Manufacturer: Linear Technology

TYPICAL PERFOR A CE CHARACTERISTICS
0.615
0.610
0.605
0.600
0.595
0.590
0.585
100
100
90
80
70
60
50
40
30
20
10
90
80
70
60
50
40
30
20
10
0
0
–50
Reference Voltage vs
Temperature
1
Efficiency vs Load Current
1
Efficiency vs Load Current
V
CIRCUIT OF FIGURE 3
2.7V
V
V
2.7V
OUT
OUT
IN
–25
= 3.6V
= 2.5V Burst Mode OPERATION
= 1.2V Burst Mode OPERATION
4.2V
0
LOAD CURRENT (mA)
LOAD CURRENT (mA)
TEMPERATURE (°C)
10
10
3.3V
4.2V
25
50
100
100
75
3.3V
W
100
3407A2 G07
3407A2 G10
3407A2 G13
U
1000
1000
125
100
90
80
70
60
50
40
30
20
10
100
500
450
400
350
300
250
200
0
90
80
70
60
50
40
30
20
10
0
Efficiency vs Load Current
1
V
R
2.7V
1
1
Efficiency vs Load Current
OUT
V
NO LOAD ON OTHER CHANNEL
Burst Mode OPERATION
4.2V
DS(ON)
IN
SYNCHRONOUS
= 3.6V, V
= 1.5V Burst Mode OPERATION
PULSE SKIP MODE
2
vs Input Voltage
LOAD CURRENT (mA)
3.3V
SWITCH
LOAD CURRENT (mA)
10
OUT
10
3
= 1.8V
MAIN
SWITCH
V
IN
4
(V)
100
100
5
3407A2 G14
6
3407A2 G08
3407A2 G11
T
A
1000
1000
= 25°C unless otherwise specified.
7
–0.1
–0.2
–0.3
–0.4
–0.5
550
500
450
400
350
300
250
200
150
100
0.5
0.4
0.3
0.2
0.1
–1
–2
–3
–4
4
3
2
1
0
0
–50
1
R
Load Regulation
2
PULSE SKIP MODE
Line Regulation
Burst Mode OPERATION
V
NO LOAD ON OTHER CHANNEL
DS(ON)
V
I
OUT
IN
OUT
–25
= 3.6V, V
= 200mA
MAIN SWITCH
SYNCHRONOUS SWITCH
= 1.8V
V
LTC3407A-2
IN
www.DataSheet4U.com
vs Temperature
0
3
= 4.2V
LOAD CURRENT (mA)
TEMPERATURE (°C)
OUT
10
25
= 1.8V
V
V
IN
IN
50
4
(V)
= 3.6V
V
IN
75
= 2.7V
100
100
5
3407A2 G09
3407A2 G15
125
3407A2 G12
3407a2f
5
1000
150
6