LTC3412A Linear Technology, LTC3412A Datasheet - Page 4

• Manufacturer Part Number: LTC3412A
• Description: 3A/ 4MHz/ Monolithic Synchronous Step-Down Regulator
• Manufacturer: Linear Technology

INDUCTOR
LTC3412A
TYPICAL PERFOR A CE CHARACTERISTICS
20mV/DIV
CURRENT
4
1A/DIV
100
90
80
70
60
50
40
30
20
10
94
92
90
88
86
84
82
80
V
0
OUT
0.01
2.5
Effi ciency vs Load Current
Effi ciency vs Input Voltage
OPERATION
Burst Mode
FIGURE 4 CIRCUIT
Burst Mode Operation
3.0
FORCED
CONTINUOUS
0.1A
LOAD CURRENT (A)
INPUT VOLTAGE (V)
0.1
3.5
3A
5μs/DIV
1A
V
V
FIGURE 4 CIRCUIT
4.0
FIGURE 4 CIRCUIT
IN
OUT
1
= 3.3V
= 2.5V
W
4.5
3412A GO1
3412A GO4
3412A GO7
U
10
5.0
CONTINUOUS
20mV/DIV
SKIPPING
20mV/DIV
20mV/DIV
FORCED
BURST
100
PULSE
MODE
96
95
94
93
92
91
90
89
88
87
95
90
85
80
75
70
65
60
55
50
0.01
0
Effi ciency vs Load Current, Burst
Mode Operation
Effi ciency vs Frequency
V
V
FIGURE 4 CIRCUIT
Output Voltage Ripple
0.5
IN
OUT
1μH
V
= 3.3V
IN
= 2.5V
0.22μH
V
1.0
= 3.3V
IN
= 5V
0.47μH
LOAD CURRENT (A)
FREQUENCY (MHz)
0.1
1.5
2.0
5μs/DIV
V
FIGURE 4 CIRCUIT
FIGURE 4 CIRCUIT
2.5
OUT
1
= 2.5V
3.0
V
IN
= 3.3V
3.5
3412A GO2
3412A GO5
3412A GO8
10
4.0
100mV/DIV
INDUCTOR
CURRENT
2A/DIV
V
–0.1
–0.2
–0.3
–0.4
–0.5
–0.6
100
OUT
90
80
70
60
50
40
30
20
10
0
0
0.01
Effi ciency vs Load Current,
Forced Continuous Operation
Load Regulation
0
V
V
F = 1MHz
LOAD STEP = 50mA TO 2A
FIGURE 4 CIRCUIT
Load Step Transient Burst Mode
Operation
IN
OUT
= 3.3V
= 2.5V
0.5
V
IN
www.DataSheet4U.com
= 3.3V
LOAD CURRENT (A)
LOAD CURRENT (A)
0.1
1.0
40μs/DIV
1.5
V
IN
= 5V
V
FIGURE 4 CIRCUIT
FIGURE 4 CIRCUIT
OUT
2.0
1
= 2.5V
V
IN
2.5
= 3.3V
3412A GO3
3412A GO6
3412A GO9
3412afc
10
3.0