LTC3406AB-2_15 Datasheet, PDF (4/16 Pages) Linear Technology – 2.25MHz, 600mA Synchronous Step-Down Regulator in ThinSOT

LTC3406AB-2
TYPICAL PERFORMANCE CHARACTERISTICS
(From Figure 1a Except for the Resistive Divider Resistor Values)
Oscillator Frequency vs
Temperature
2.50
V_IN = 3.6V
2.45
2.40
Oscillator Frequency vs
Supply Voltage
2.4
2.3
2.35
2.2
2.30
2.25
2.1
2.20
2.15
2.0
2.10
1.9
2.05
2.00
–50 –25
0 25 50 75 100 125
TEMPERATURE (°C)
1.8
2 2.5 3 3.5 4 4.5 5 5.5 6
INPUT VOLTAGE (V)
3406AB2 G07
3406AB2 G08
Output Voltage vs Load Current
1.820
V_OUT = 1.8V
1.816
1.812
1.808
1.804
1.800
1.796
1.792
1.788
1.784
1.780
0
V_IN = 2.7V
V_IN = 3.6V
V_IN = 4.2V
200
400
600
OUTPUT CURRENT (mA)
3406AB2 G09
R_DS(ON) vs Input Voltage
0.40
0.35
0.30
MAIN SWITCH
0.25
SYNCHRONOUS
SWITCH
0.20
0.15
0.10
01
2 34 5
INPUT VOLTAGE (V)
67
3406AB2 G10
Dynamic Supply Current
vs Temperature
300
V_IN = 3.6V
V_OUT = 1.2V
250 _{ILOAD = 0A}
200
PULSE SKIPPING MODE
150
100
50
0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3406AB2 G13
4
R_DS(ON) vs Temperature
0.40
0.35
V_IN = 2.7V
V_IN = 3.6V
0.30
0.25
V_IN = 4.2V
0.20
0.15
0.10
0.05
0
–50 –25
SYNCHRONOUS SWITCH
MAIN SWITCH
0 25 50 75 100 125
TEMPERATURE (°C)
3406AB2 G11
Dynamic Supply Current
300
V_OUT = 1.2V
I_LOAD = 0A
250
200
PULSE SKIPPING MODE
150
100
50
0
2 2.5 3 3.5 4 4.5 5 5.5 6
INPUT VOLTAGE (V)
3406AB2 G12
Switch Leakage vs Temperature
140
120
100
80
MAIN SWITCH
60
40
SYNCHRONOUS
SWITCH
20
0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3406AB2 G14
Switch Leakage vs Input Voltage
1000
RUN = 0V
900
800
700
600
500
MAIN SWITCH
400
300
200
SYNCHRONOUS
SWITCH
100
0
0
1
2
3
4
5
6
INPUT VOLTAGE (V)
3406AB2 G15
3406ab2f