LTC3417 Linear Technology, LTC3417 Datasheet - Page 4

• Manufacturer Part Number: LTC3417
• Description: Dual Synchronous 1.4A/800mA 4MHz Step-Down DC/DC Regulator
• Manufacturer: Linear Technology

250mA/DIV
250mA/DIV
20mV/DIV
20mV/DIV
LTC3417
4
TYPICAL PERFOR A CE CHARACTERISTICS
V
V
OUT
OUT
100
I
I
95
90
85
80
75
70
65
60
L
L
0.001
OUT1 Burst Mode Operation
V
V
I
REFER TO FIGURE 4
V
V
I
REFER TO FIGURE 4
OUT1 Efficiency vs Load Current
OUT2 Burst Mode Operation
LOAD
LOAD
V
V
IN
OUT
IN
OUT
IN
OUT
= 3.6V
= 3.6V
= 2.5V
= 1.8V
= 2.5V
= 100mA
= 60mA
= 1.8V
0.01
LOAD CURRENT (A)
2µs/DIV
2µs/DIV
0.1
REFER TO FIGURE 4
Burst Mode
OPERATION
PULSE SKIP
FORCED
CONTINUOUS
W
1
3417 G01
3417 G04
3417 G07
U
10
250mA/DIV
250mA/DIV
20mV/DIV
20mV/DIV
V
V
OUT
OUT
100
95
90
85
80
75
70
65
60
I
I
L
L
0.001
OUT1 Pulse Skipping
Mode Operation
OUT2 Pulse Skipping
Mode Operation
OUT2 Efficiency vs Load Current
V
V
I
REFER TO FIGURE 4
V
V
I
REFER TO FIGURE 4
LOAD
V
V
LOAD
IN
OUT
IN
OUT
IN
OUT
= 3.6V
= 3.6V
= 3.6V
= 1.8V
= 100mA
= 2.5V
= 60mA
= 2.5V
0.01
LOAD CURRENT (A)
2µs/DIV
2µs/DIV
REFER TO FIGURE 4
0.1
Burst Mode
OPERATION
PULSE SKIP
FORCED
CONTINUOUS
3417 G02
3417 G05
3417 G08
1
250mA/DIV
250mA/DIV
20mV/DIV
20mV/DIV
V
V
OUT
OUT
100
I
I
95
80
70
90
85
75
L
L
OUT1 Forced Continuous
Mode Operation
OUT2 Forced Continuous
Mode Operation
OUT1 Efficiency vs V
(Burst Mode Operation)
V
V
I
REFER TO FIGURE 4
2
LOAD
V
V
I
REFER TO FIGURE 4
IN
OUT
LOAD
V
IN
OUT
OUT
= 3.6V
= 3.6V
= 1.8V
2.5
= 100mA
= 2.5V
= 60mA
= 1.8V
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I
LOAD
3
= 1.4A
3.5
2µs/DIV
2µs/DIV
V
IN
(V)
I
LOAD
4
REFER TO FIGURE 4
IN
= 460mA
4.5
5
3417fb
3417 G03
3417 G06
3417 G09
5.5