LTC3563 查看數據表（PDF） - Linear Technology
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LTC3563 Datasheet PDF : 16 Pages
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LTC3563
ELECTRICAL CHARACTERISTICS The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VIN = 3.6V unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
VUVLO
VRUN
IRUN
VSEL
Undervoltage Lockout Threshold
RUN Threshold
RUN Leakage Current
VSEL Threshold
VIN Rising
VIN Falling
2.0
2.3
V
1.8
1.9
V
● 0.3
1.2
V
●
±0.01 ±1
µA
● 0.3
1
1.2
V
RSEL
VSEL Pull-Up Resistance
Resistance Between VSEL and VIN
1.3
2.2
3
MΩ
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 should exceed 6V.
Note 2: The LTC3563 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: Failure to solder the Exposed Pad of the package to the PC board
will result in a thermal resistance much higher than 40°C/W.
Note 4: The converter is tested in a proprietary test mode that connects
the output of the error amplifier to the SW pin, which is connected to an
external servo loop.
Note 5: Dynamic supply current is higher due to the internal gate charge
being delivered at the switching frequency.
Note 6: The DFN switch on resistance is guaranteed by correlation to wafer
level measurements.
Note 7: TJ is calculated from the ambient temperature TA and power
dissipation PD according to the following formula:
TJ = TA + (PD) • (θJA).
TYPICAL PERFOR A CE CHARACTERISTICS TA = 25°C unless otherwise specified.
Burst Mode Operation
Start-Up from Shutdown
Start-Up from Shutdown
SW
2V/DIV
VOUT
50mV/DIV
AC COUPLED
IL
100mA/DIV
VIN = 3.6V
VOUT = 1.87V
ILOAD = 30mA
2µs/DIV
RUN
2V/DIV
VOUT
1V/DIV
IL
200mA/DIV
3563 G01
VIN = 3.6V
VOUT = 1.87V
ILOAD = 0A
400µs/DIV
RUN
2V/DIV
VOUT
1V/DIV
IL
500mA/DIV
3542 G02
VIN = 3.6V
VOUT = 1.87V
ILOAD = 500mA
400µs/DIV
3563 G03
3563f
3
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