LTC3419 Datasheet, PDF (5/16 Pages) Linear Technology – Dual Monolithic 600mA Synchronous Step-Down Regulator

LTC3419
TYPICAL PERFORMANCE CHARACTERISTICS T_A = 25°C, V_IN = 3.6V, unless otherwise noted.
Efficiency vs Load Current
100
90
80
70
60
50
40
30
20
10
0 ^{VOUT = 1.2V}
0.1
1
V_IN = 2.7V
V_IN = 3.6V
V_IN = 4.2V
10
100
1000
OUTPUT CURRENT (mA)
3419 G10
Efficiency vs Load Current
100
90
80
70
60
50
40
30
20
10
0 ^{VOUT = 1.8V}
0.1
1
V_IN = 2.7V
V_IN = 3.6V
V_IN = 4.2V
10
100
1000
OUTPUT CURRENT (mA)
3419 G11
Efficiency vs Load Current
100
90
80
70
60
50
40
30
20
10
0 ^{VOUT = 2.5V}
0.1
1
V_IN = 2.7V
V_IN = 3.6V
V_IN = 4.2V
10
100
1000
OUTPUT CURRENT (mA)
3419 G12
Efficiency vs Load Current
100
Burst Mode OPERATION
90
80
70
PULSE SKIP MODE
60
50
40
30
20
10
0 ^{VOUT = 1.8V}
0.1
1
10
100
OUTPUT CURRENT (mA)
1000
3419 G13
Load Regulation
3.0
2.5
2.0
V_OUT = 1.2V
V_OUT = 1.8V
V_OUT = 2.5V
1.5
Burst Mode OPERATION
1.0
0.5
0
–0.5
–1.0
0
100 200 300 400 500 600
LOAD CURRENT (mA)
3419 G14
Load Regulation
2.0
V_OUT = 1.8V
1.5
1.0
0.5
0
–0.5
–1.0
0
Burst Mode OPERATION
PULSE SKIP MODE
100 200 300 400 500 600
LOAD CURRENT (mA)
3419 G15
Line Regulation
0.6
V_OUT = 1.8V
I_LOAD = 100mA
0.4
Start-Up from Shutdown
RUN
2V/DIV
0.2
V_OUT
1V/DIV
0
–0.2
I_L
500mA/DIV
–0.4
–0.6
2.5 3.0 3.5 4.0 4.5 5.0 5.5
V_IN (V)
3419 G16
V_IN = 3.6V
V_OUT = 1.8V
I_LOAD = 0A
250μs/DIV
Start-Up from Shutdown
RUN
2V/DIV
V_OUT
1V/DIV
I_LOAD
500mA/DIV
3419 G17
V_IN = 3.6V
V_OUT = 1.8V
R_LOAD = 3Ω
250μs/DIV
3419 G18
3419f
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