LTC3406-1.2 Datasheet, PDF (3/12 Pages) Linear Technology – 1.5MHz, 600mA Synchronous Step-Down Regulator in ThinSOT

LTC3406-1.2
TYPICAL PERFOR A CE CHARACTERISTICS T_A = 25°C unless otherwise specified.
(From Figure 1)
Efficiency vs Input Voltage
100
95
Efficiency and Power Loss
100
90
Reference Voltage vs
Temperature
1.228
V_IN = 3.6V
1.218
90
80
I_OUT = 100mA
85
70
I_OUT = 10mA
80
60
1.208
1.198
1.188
75
70
2
I_OUT = 600mA
3
4
5
INPUT VOLTAGE (V)
6
340612 G01
50
40
0.1
V_IN = 2.7V
V_IN = 3.6V
V_IN = 4.2V
1
10
100
I_LOAD (mA)
1000
340612 GO2
1.178
1.168
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
340612 G03
Oscillator Frequency vs
Temperature
1.70
V_IN = 3.6V
1.65
1.60
1.55
1.50
1.45
1.40
1.35
1.30
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
340612 G04
Oscillator Frequency vs
Supply Voltage
1.8
T_A = 25°C
1.7
1.6
1.5
1.4
1.3
1.2
2
3
4
5
SUPPLY VOLTAGE (V)
6
340612 G05
Output Voltage vs Load Current
1.225
1.215
1.205
1.195
1.185
1.175
0
100 200 300 400 500 600 700 800 900 1000
LOAD CURRENT (mA)
340612 G06
R_DS(ON) vs Input Voltage
0.7
T_A = 25°C
0.6
0.5
MAIN
SWITCH
0.4
0.3
SYNCHRONOUS
SWITCH
0.2
0.1
0
0 12 3 45
INPUT VOLTAGE (V)
67
340612 G07
R_DS(ON) vs Temperature
0.7
V_IN = 2.7V
0.6
V_IN = 4.2V ^{VIN = 3.6V}
0.5
0.4
0.3
0.2
0.1
0
–50
MAIN SWITCH
SYNCHRONOUS SWITCH
–25 0 25 50 75
TEMPERATURE (°C)
100 125
340612 G08
Supply Current vs Supply Voltage
50
I_LOAD = 0A
45
40
35
30
25
20
15
10
5
0
2
3
4
5
6
SUPPLY VOLTAGE (V)
340612 G09
340612f
3