LTC3406-1.8_15 Datasheet, PDF (4/16 Pages) Linear Technology – 1.5MHz, 600mA Synchronous Step-Down Regulator in ThinSOT

LTC3406
LTC3406-1.5/LTC3406-1.8
TYPICAL PERFOR A CE CHARACTERISTICS
(From Figure1a Except for the Resistive Divider Resistor Values)
Oscillator Frequency vs
Supply Voltage
1.8
1.7
1.6
1.5
1.4
1.3
1.2
2
3
4
5
SUPPLY VOLTAGE (V)
6
3406 G07
Output Voltage vs Load Current
1.844
V_IN = 3.6V
1.834
1.824
1.814
1.804
1.794
1.784
1.774
0 100 200 300 400 500 600 700 800 900
LOAD CURRENT (mA)
3406 G08
R_DS(ON) vs Input Voltage
0.7
0.6
0.5
MAIN
SWITCH
0.4
0.3
SYNCHRONOUS
SWITCH
0.2
0.1
0
0 12 3 45 6 7
INPUT VOLTAGE (V)
3406 G09
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
3406 G10
Switch Leakage vs Temperature
300
V_IN = 5.5V
RUN = 0V
250
200
150
100
MAIN SWITCH
50
SYNCHRONOUS SWITCH
0
–50 –25
0 25 50 75 100 125
TEMPERATURE (°C)
3406 G13
4
Supply Current vs Supply Voltage
50
45
V_OUT = 1.8V
I_LOAD = 0A
40
35
30
25
20
15
10
5
0
2
3
4
5
6
SUPPLY VOLTAGE (V)
3406 G11
Supply Current vs Temperature
50
V_IN = 3.6V
45 _{VOUT = 1.8V}
40 ^{ILOAD = 0A}
35
30
25
20
15
10
5
0
–50 –25
0 25 50 75 100 125
TEMPERATURE (°C)
3406 G12
Switch Leakage vs Input Voltage
120
RUN = 0V
100
SYNCHRONOUS
SWITCH
80
60
MAIN
SWITCH
40
Burst Mode Operation
SW
5V/DIV
V_OUT
100mV/DIV
AC COUPLED
I_L
200mA/DIV
20
0
012
3
4
56
INPUT VOLTAGE (V)
3406 G14
V_IN = 3.6V
V_OUT = 1.8V
I_LOAD = 50mA
4µs/DIV
3406 G15
3406fa