LTC3541-1 Datasheet, PDF (4/20 Pages) Linear Technology – High Efficiency Buck + VLDO Regulator

LTC3541-1
ELECTRICAL CHARACTERISTICS
Note 7: Measurement made in closed loop linear regulator configuration
with LV_OUT = 1.2V, I_LOAD = 10µA.
Note 8: Measurement made in a proprietary test mode with slope
compensation disabled.
Note 9: Measurement is assured by design, characterization and statistical
process control.
Note 10: This IC includes overtemperature protection that is intended
to protect the device during momentary overload conditions. Junction
temperature will exceed 125°C when overtemperature protection is active.
Continuous operation above the specified maximum operating junction
temperature may impair device reliability.
TYPICAL PERFOR A CE CHARACTERISTICS
Efficiency vs Input Voltage for
Buck (Burst)
100
95 ^{VOUT = 1.8V}
90
85
80
I_OUT = 100mA
75
I_OUT = 500mA
I_OUT = 30mA
70
65
60
55
50
2
3
4
5
6
INPUT VOLTAGE (V)
35411 G01
Efficiency vs Load Current for
Buck (Pulse Skip)
100
V_OUT = 1.8V
90
V_IN = 2.7V
80
V_IN = 3.6V
70
V_IN = 4.2V
60
50
40
30
20
10
0
0.1
1
10
100
1000
LOAD CURRENT (mA)
35411 G04
Efficiency vs Input Voltage for
Buck (Pulse Skip)
100
95 ^{VOUT = 1.8V}
90
I_OUT = 500mA
85
80
75
I_OUT = 100mA
70
65
I_OUT = 30mA
60
55
50
2
3
4
5
6
INPUT VOLTAGE (V)
35411 G02
Efficiency vs Load Current for
Buck (Burst)
100
90
V_IN = 2.7V
80
V_IN = 3.6V
V_IN = 4.2V
70
60
50
40
30
20
10
0 ^{VOUT = 2.5V}
0.1
1
10
100
LOAD cURRENT (mA)
1000
35411 G05
Efficiency vs Load Current for
Buck (Burst)
100
90 _{VIN = 2.7V}
80
70
V_IN = 4.2V
V_IN = 3.6V
60
50
40
30
20
10
0 ^{VOUT = 1.8V}
0.1
1
10
100
LOAD CURRENT (mA)
1000
35412 G03
Efficiency vs Load Current for
Buck (Pulse Skip)
100
V_OUT = 2.5V
90
80
V_IN = 2.7V
70
V_IN = 3.6V
V_IN = 4.2V
60
50
40
30
20
10
0
0.1
1
10
100
1000
LOAD CURRENT (mA)
35411 G06
35411fa