LT3755EUD-1-PBF(RevA) データシートの表示（PDF） - Linear Technology
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LT3755EUD-1-PBF Datasheet PDF : 24 Pages
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LT3755/LT3755-1
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating temp-
erature range, otherwise specifications are at TA = 25°C. VIN = 24V, SHDN/UVLO = 24V, CTRL = 2V, PWM = 5V, unless otherwise noted.
PARAMETER
CONDITIONS
MIN
TYP
MAX UNITS
Linear Regulator
INTVCC Regulation Voltage
Dropout (VIN – INTVCC)
INTVCC Undervoltage Lockout
IINTVCC = –10mA, VIN = 7V
7
7.15
7.3
V
350
mV
3.9
4.1
4.3
V
INTVCC Current Limit
INTVCC Current in Shutdown
Logic Inputs/Outputs
SHDN/UVLO = 0V, INTVCC = 7V
29
34
40
mA
8
12
μA
PWM Input High Voltage
1.5
V
PWM Input Low Voltage
0.4
V
PWM Pin Resistance to GND
45
60
kΩ
PWMOUT Output Low (VOL)
PWMOUT Output High (VOH)
SHDN/UVLO Threshold Voltage Falling
SHDN/UVLO Rising Hysteresis
SHDN/UVLO Input Low Voltage
SHDN/UVLO Pin Bias Current Low
SHDN/UVLO Pin Bias Current High
OPENLED Output Low (VOL)
SYNC Pin Resistance to GND
IVIN Drops Below 1μA
SHDN/UVLO = 1.15V
SHDN/UVLO = 1.30V
IOPENLED = 0.5mA (LT3755 Only)
LT3755-1 Only
0
50
mV
INTVCC
V
– 50mV
l 1.185 1.220 1.245
V
20
mV
0.4
V
1.7
2.05
2.5
μA
10
100
nA
200
mV
30
kΩ
SYNC Input High
LT3755-1 Only
1.5
V
SYNC Input Low
LT3755-1 Only
0.4
V
Gate Driver
tr GATE Driver Output Rise Time
tf GATE Driver Output Fall Time
GATE Output Low (VOL)
GATE Output High (VOH)
CL = 3300pF
CL = 3300pF
35
ns
35
ns
0.05
V
INTVCC
V
– 50mV
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 LT3755E and LT3755E-1 are guaranteed to meet performance
specifications from 0°C to 125°C junction temperature. Specifications over
the –40°C to 125°C operating junction temperature range are assured by
design, characterization and correlation with statistical process controls. The
LT3755I and LT3755I-1 are guaranteed to meet performance specifications
over the –40°C to 125°C operating junction temperature range.
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4
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