LTC3406B Просмотр технического описания (PDF) - Linear Technology
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LTC3406B Datasheet PDF : 16 Pages
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LTC3406B
ELECTRICAL CHARACTERISTICS The ● denotes specifications which apply over the full operating
temperature range, otherwise specifications are TA = 25°C. VIN = 3.6V unless otherwise specified.
SYMBOL PARAMETER
CONDITIONS
MIN TYP MAX
UNITS
VRUN
IRUN
RUN Threshold
RUN Leakage Current
● 0.3
1
1.5
V
●
±0.01 ±1
µA
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: The LTC3406BE 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: TJ is calculated from the ambient temperature TA and power
dissipation PD according to the following formula:
LTC3406B: TJ = TA + (PD)(250°C/W)
Note 4: The LTC3406B is tested in a proprietary test mode that connects
VFB 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.
TYPICAL PERFOR A CE CHARACTERISTICS
(From Figure1a Except for the Resistive Divider Resistor Values)
Efficiency vs Input Voltage
100
TA = 25°C
95
90
85
IOUT = 600mA
IOUT = 100mA
80
75
IOUT = 10mA
70
65
60
55
50
2
3
4
5
6
INPUT VOLTAGE (V)
3406B G01
Efficiency vs Output Current
100
VOUT = 2.5V
90 TA = 25°C
80
VIN = 2.7V
70
VIN = 4.2V
60
50
40
30
20
VIN = 3.6V
10
0.1
1
10
100
OUTPUT CURRENT (mA)
1000
3406B G04
Efficiency vs Output Current
100
VOUT = 1.2V
90 TA = 25°C
VIN = 2.7V
80
70
VIN = 3.6V
60
50
VIN = 4.2V
40
30
20
10
0.1
1
10
100
OUTPUT CURRENT (mA)
1000
3406B GO2
Reference Voltage vs
Temperature
0.614
VIN = 3.6V
0.609
0.604
0.599
0.594
0.589
0.584
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3406B G05
Efficiency vs Output Current
100
VOUT = 1.5V
90 TA = 25°C
VIN = 2.7V
80
70
VIN = 3.6V
60
50
VIN = 4.2V
40
30
20
10
0.1
1
10
100
OUTPUT CURRENT (mA)
1000
3406B GO3
Oscillator Frequency vs
Temperature
1.70
VIN = 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
3406B G06
3406bfa
3
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