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LT3748IMSPBF Datasheet(PDF) 3 Page - Linear Technology

Part # LT3748IMSPBF
Description  100V Isolated Flyback Controller
PDF  28 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LT3748IMSPBF Datasheet(HTML) 3 Page - Linear Technology

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LT3748

3748f
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 LT3748E is 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
LT3748I is guaranteed over the full –40°C to 125°C operating junction
temperature range.
Note 3: Current flows out of the pin.
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
SENSE Overcurrent Threshold
VC = 2.2V
115
130
145
mV
SENSE Input Bias Current
VSENSE = 10mV (Note 3)
10
15
20
µA
RREF Voltage
VC = 1.1V
l
1.20
1.195
1.223
1.24
1.245
V
V
RREF Voltage Line Regulation
5V < VIN < 100V
0.005
0.025
%/V
RREF Pin Bias Current
(Note 3)
l
35
500
nA
TC Current into RREF
RTC = 20k
27.5
µA
Error Amplifier Voltage Gain
115
V/V
Error Amplifier Transconductance
∆I = 10µA
155
µmhos
VC Source Current
VC = 1.1V, VRREF = 0.5V
–45
µA
VC Sink Current
VC = 1.1V, VRREF = 2V
48
µA
Flyback Comparator Trip Current
Current into RFB Pin, RREF = 6.04k
10
µA
Minimum GATE Off-Time
700
ns
Minimum GATE On-Time
250
ns
Maximum Discontinuous Off-Time
VC = 0V
24
µs
Maximum GATE Off-Time
VRREF = 0.5V
55
µs
Maximum GATE On-Time
VSENSE = 0V
55
µs
GATE Output Rise Time
CL = 3300pF, 10% to 90%
16
ns
GATE Output Fall Time
CL = 3300pF, 10% to 90%
16
ns
GATE Output Low (VOL)
0.05
V
GATE Output High (VOH)
VINTVCC – 0.05
V
electrical characteristics The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VIN = 10V, unless otherwise noted.



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