LT4356IDE-3-TR Ver la hoja de datos (PDF) - Linear Technology
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LT4356IDE-3-TR Datasheet PDF : 24 Pages
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LT4356-3
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VCC = 12V unless otherwise noted.
SYMBOL PARAMETER
CONDITIONS
MIN
TYP
MAX
ΔVTMR
VIN+
IIN+
Early Warning Period
IN+ Pin Threshold
IN+ Pin Input Current
From FLT going Low to GATE going Low, VCC = 5V to 80V l 80
100
120
l 1.22 1.25 1.28
VIN+ = 1.25V
l
0.3
1
VOL
FLT, EN, AOUT Pins Output Low
ISINK = 2mA
ISINK = 0.1mA
l
2
8
l
300
800
IOUT
OUT Pin Input Current
VOUT = VCC = 12V; LT4356C, LT4356I, LT4356H
l
VOUT = VCC = 12V; LT4356MP
l
VOUT = VCC = 12V, VSHDN = 0V
l
200
300
200
310
6
14
ΔVOUT OUT Pin High Threshold
ΔVOUT = VCC – VOUT; EN From Low to High
l 0.25
0.5
0.7
VSHDN SHDN Pin Threshold
VCC = 12V to 48V
0.6
1.4
1.7
l 0.4
2.1
VSHDN(FLT) SHDN Pin Float Voltage
VCC = 12V to 48V
l 0.6
1.2
2.1
ISHDN
SHDN Pin Current
VSHDN = 0V
l –1
–4
–8
tOFF(OC) Overcurrent Turn Off Delay Time
GATE From High to Low, ΔVSNS = 0 → 120mV; LT4356C,
LT4356I, LT4356H
l
LT4356MP
l
2
4
2
4.5
tOFF(OV) Overvoltage Turn Off Delay Time GATE From High to Low, VFB = 0 → 1.5V
l
0.25
1
UNITS
mV
V
µA
V
mV
µA
µA
mA
V
V
V
V
µA
µs
µs
µs
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: All currents into device pins are positive; all currents out of device
pins are negative. All voltages are referenced to GND unless otherwise
specified.
Note 3: An internal clamp limits the GATE pin to a minimum of 10V above
the OUT pin. Driving this pin to voltages beyond the clamp may damage
the device.
TYPICAL PERFORMANCE CHARACTERISTICS
Specifications are at VCC = 12V, TA = 25°C unless otherwise noted.
ICC vs VCC
1000
800
600
400
200
0
0 10 20 30 40 50 60 70 80
VCC (V)
43563 G02
ICC (Shutdown) vs VCC
60
50
40
30
20
10
0
0 10 20 30 40 50 60 70 80
VCC (V)
43563 G01
ICC (Shutdown) vs Temperature
35
30
25
20
15
10
5
0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
43563 G03
43563fb
4
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