LTC3417_15 Datasheet, PDF (4/20 Pages) Linear Technology – Dual Synchronous 1.4A/800mA 4MHz Step-Down DC/DC Regulator

LTC3417
TYPICAL PERFORMANCE CHARACTERISTICS
OUT1 Burst Mode Operation
OUT1 Pulse Skipping
Mode Operation
V_OUT
20mV/DIV
V_OUT
20mV/DIV
OUT1 Forced Continuous
Mode Operation
V_OUT
20mV/DIV
I_L
250mA/DIV
I_L
250mA/DIV
I_L
250mA/DIV
V_IN = 3.6V
2μs/DIV
V_OUT = 1.8V
I_LOAD = 100mA
REFER TO FIGURE 4
3417 G01
V_IN = 3.6V
2μs/DIV
V_OUT = 1.8V
I_LOAD = 100mA
REFER TO FIGURE 4
3417 G02
V_IN = 3.6V
2μs/DIV
V_OUT = 1.8V
I_LOAD = 100mA
REFER TO FIGURE 4
3417 G03
OUT2 Burst Mode Operation
V_OUT
20mV/DIV
OUT2 Pulse Skipping
Mode Operation
V_OUT
20mV/DIV
OUT2 Forced Continuous
Mode Operation
V_OUT
20mV/DIV
I_L
250mA/DIV
V_IN = 3.6V
2μs/DIV
V_OUT = 2.5V
I_LOAD = 60mA
REFER TO FIGURE 4
I_L
250mA/DIV
3417 G04
V_IN = 3.6V
2μs/DIV
V_OUT = 2.5V
I_LOAD = 60mA
REFER TO FIGURE 4
I_L
250mA/DIV
3417 G05
V_IN = 3.6V
2μs/DIV
V_OUT = 2.5V
I_LOAD = 60mA
REFER TO FIGURE 4
3417 G06
OUT1 Efficiency vs Load Current
100 _{VIN = 2.5V}
95 ^{VOUT = 1.8V}
90
85
80
75
70
65
60
0.001
Burst Mode
OPERATION
PULSE SKIP
FORCED
CONTINUOUS
REFER TO FIGURE 4
0.01
0.1
1
10
LOAD CURRENT (A)
3417 G07
4
OUT2 Efficiency vs Load Current
100
V_IN = 3.6V
95 ^{VOUT = 2.5V}
90
85
80
75
70
65
60
0.001
Burst Mode
OPERATION
PULSE SKIP
FORCED
CONTINUOUS
REFER TO FIGURE 4
0.01
0.1
1
LOAD CURRENT (A)
3417 G08
OUT1 Efficiency vs V_IN
(Burst Mode Operation)
100 _{VOUT = 1.8V}
95
I_LOAD = 460mA
90
I_LOAD = 1.4A
85
80
75
REFER TO FIGURE 4
70
2 2.5 3 3.5 4 4.5 5 5.5
V_IN (V)
3417 G09
3417fd