LTC3407EDD-3 データシートの表示（PDF） - Linear Technology
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LTC3407EDD-3
Linear Technology
LTC3407EDD-3 Datasheet PDF : 16 Pages
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LTC3407-3
ELECTRICAL CHARACTERISTICS
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. No pin shall exceed 6V.
Note 2: The LTC3407E-3 is guaranteed to meet specified performance
from 0°C to 85°C. Specifications over the – 40°C and 85°C operating
temperature range are assured by design, characterization and correlation
with statistical process controls.
Note 3: The LTC3407-3 is tested in a proprietary test mode that connects
the output of the error amplifier to an outside servo loop.
Note 4: Dynamic supply current is higher due to the internal gate charge
being delivered at the switching frequency.
Note 5: TJ is calculated from the ambient TA and power dissipation PD
according to the following formula: TJ = TA + (PD • θJA).
Note 6: The DFN switch on-resistance is guaranteed by correlation to
wafer level measurements.
TYPICAL PERFOR A CE CHARACTERISTICS TA = 25°C unless other wise specified.
Burst Mode Operation
Pulse Skipping Mode
Load Step
SW
5V/DIV
VOUT
20mV/DIV
IL
200mA/DIV
VIN = 3.6V
VOUT = 1.8V
ILOAD = 100mA
2µs/DIV
SW
5V/DIV
VOUT
20mV/DIV
IL
200mA/DIV
34073 G01
VIN = 3.6V
VOUT = 1.8V
ILOAD = 20mA
1µs/DIV
VOUT
200mV/DIV
IL
500mA/DIV
ILOAD
500mA/DIV
34073 G02
VIN = 3.6V
20µs/DIV
VOUT = 1.8V
ILOAD = 80mA TO 800mA
CIRCUIT OF FIGURE 1
34073 G03
Load Step
VOUT
200mV/DIV
IL
500mA/DIV
ILOAD
500mA/DIV
VIN = 5V
20µs/DIV
VOUT = 3.3V
ILOAD = 80mA TO 800mA
CIRCUIT OF FIGURE 1
34073 G04
Oscillator Frequency vs
Temperature
2.5
VIN = 3.6V
2.4
2.3
2.2
2.1
2.0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
34073 G05
Oscillator Frequency Deviation
vs Supply Voltage
10
8
6
4
2
0
–2
–4
–6
–8
–10
2
3
4
5
6
SUPPLY VOLTAGE (V)
34073 G06
34073fa
3
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