LTC3406-1.5_15 Datasheet, PDF (3/16 Pages) Linear Technology – 1.5MHz, 600mA Synchronous Step-Down Regulator in ThinSOT

LTC3406
LTC3406-1.5/LTC3406-1.8
ELECTRICAL CHARACTERISTICS
The ● denotes specifications which apply over the full operating temperature range, otherwise specifications are T_A = 25°C.
V_IN = 3.6V unless otherwise specified.
SYMBOL
V_RUN
I_RUN
PARAMETER
RUN Threshold
RUN Leakage Current
CONDITIONS
MIN TYP MAX
● 0.3
1
1.5
●
±0.01 ±1
UNITS
V
µA
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: The LTC3406E is guaranteed to meet performance specifications
from 0°C to 70°C. Specifications over the –40°C to 85°C operating
temperature range are assured by design, characterization and correlation
with statistical process controls.
Note 3: T_J is calculated from the ambient temperature T_A and power
dissipation P_D according to the following formula:
LTC3406: T_J = T_A + (P_D)(250°C/W)
Note 4: The LTC3406 is tested in a proprietary test mode that connects
V_FB to the output of the error amplifier.
Note 5: Dynamic supply current is higher due to the gate charge being
delivered at the switching frequency.
TYPICAL PERFOR A CE CHARACTERISTICS
(From Figure1a Except for the Resistive Divider Resistor Values)
Efficiency vs Input Voltage
100
95
I_OUT = 100mA
90
I_OUT = 10mA
85 ^{IOUT = 1mA}
80
I_OUT = 600mA
75
70
I_OUT = 0.1mA
65
60
55
V_OUT = 1.8V
50
2
3
4
5
6
INPUT VOLTAGE (V)
3406 G01
Efficiency vs Output Current
100
V_OUT = 2.5V
95
V_IN = 2.7V
90
V_IN = 3.6V
85
V_IN = 4.2V
80
75
70
65
60
0.1
1
10
100
OUTPUT CURRENT (mA)
1000
3406 G04
Efficiency vs Output Current
95
V_OUT = 1.2V
90
V_IN = 2.7V
85
V_IN = 4.2V
80
V_IN = 3.6V
75
70
65
60
0.1
1
10
100
OUTPUT CURRENT (mA)
1000
3406 G02
Reference Voltage vs
Temperature
0.614
V_IN = 3.6V
0.609
0.604
0.599
0.594
0.589
0.584
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3406 G05
Efficiency vs Output Current
95
V_OUT = 1.5V
90
V_IN = 2.7V
85
V_IN = 4.2V
80
V_IN = 3.6V
75
70
65
60
0.1
1
10
100
OUTPUT CURRENT (mA)
1000
3406 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
3406 G06
3406fa
3