LTC3406AB Datasheet, PDF (3/16 Pages) Linear Technology – 1.5MHz, 600mA Synchronous Step-Down Regulator in ThinSOT

LTC3406AB
ELECTRICAL CHARACTERISTICS The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at 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 UNITS
● 0.3
1
1.5
V
●
±0.01 ±1
μA
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: The LTC3406ABE is guaranteed to meet performance
specifications from 0°C to 85°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:
LTC3406AB: T_J = T_A + (P_D)(250°C/W)
Note 4: The LTC3406AB 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.
Note 6: 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.
Note7: Limited by long term current density considerations.
TYPICAL PERFORMANCE CHARACTERISTICS
(From Front Page Figure Except for the Resistive Divider Resistor Values)
Efficiency vs Input Voltage
100
90
80
70
60
50
40
30
20
I_L = 100mA
10
V_OUT = 1.8V
0
I_L = 600mA
I_L = 10mA
2
3
4
5
6
INPUT VOLTAGE (V)
3406B G01
Efficiency vs Load Current
100
V_OUT = 2.5V
90
80
70
60
50
40
30
20
10
0
0.1
V_IN = 2.7V
V_IN = 3.6V
V_IN = 4.2V
1
10
100
OUTPUT CURRENT (mA)
1000
3406B G03
Efficiency vs Load Current
100
V_OUT = 1.2V
90
80
70
60
50
40
30
20
10
0
0.1
V_IN = 2.7V
V_IN = 3.6V
V_IN = 4.2V
1
10
100
OUTPUT CURRENT (mA)
1000
Reference Voltage vs
Temperature
0.615
V_IN = 3.6V
3406B G02
0.610
0.605
0.600
0.595
0.590
0.585
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3406AB G21
3406abfa
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