LTC3406B-1.2 查看數據表（PDF） - Linear Technology
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LTC3406B-1.2 Datasheet PDF : 12 Pages
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LTC3406B-1.2
ELECTRICAL CHARACTERISTICS
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: The LTC3406BE-1.2 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-1.2: TJ = TA + (PD)(250°C/W)
Note 4: Dynamic supply current is higher due to the gate charge being
delivered at the switching frequency.
Note 5: 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 Figure 1)
Efficiency vs Input Voltage
95
90
IOUT = 100mA
85
80
IOUT = 600mA
75
70
IOUT = 10mA
65
60
55
50
2
3
4
5
6
INPUT VOLTAGE (V)
3406B12 G01
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
3406B12 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
3406B12 GO2
Oscillator Frequency vs
Supply Voltage
1.8
TA = 25°C
1.7
1.6
1.5
1.4
1.3
1.2
2
3
4
5
SUPPLY VOLTAGE (V)
6
3406B12 G05
Reference Voltage vs
Temperature
1.228
VIN = 3.6V
1.218
1.208
1.198
1.188
1.178
1.168
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3406B12 G03
Output Voltage vs Load Current
1.224
1.214
1.204
1.194
1.184
1.174
0
100 200 300 400 500 600 700 800 900 1000
LOAD CURRENT (mA)
3406B12 G06
sn3406b12 3406b12fs
3
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