LT3579 LINER [Linear Technology], LT3579 Datasheet - Page 4

• Manufacturer Part Number: LT3579
• Description: 6A Boost/Inverting DC/DC Converter with Fault Protection
• Manufacturer: LINER [Linear Technology]

LT3579/LT3579-1
ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifi cations are at T
PARAMETER
Soft-Start Charge Current
Soft-Start Discharge Current
Soft-Start High Detection Voltage
Soft-Start Low Detection Voltage
SHDN Minimum Input Voltage High
SHDN Input Voltage Low
SHDN Pin Bias Current
CLKOUT Output Voltage High
CLKOUT Output Voltage Low
CLKOUT Duty Cycle
CLKOUT Rise Time
CLKOUT Fall Time
GATE Pull Down Current
GATE Leakage Current
FAULT Output Voltage Low
FAULT Leakage Current
FAULT Input Voltage Low Threshold
FAULT Input Voltage High Threshold
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 LT3579E is guaranteed to meet performance specifi cations
from 0°C to 125°C junction temperature. Specifi cations over the –40°C
to 125°C operating junction temperature range are assured by design,
characterization and correlation with statistical process controls. The
LT3579I is guaranteed over the full –40°C to 125°C operating junction
temperature range.
4
CONDITIONS
V
Part in FAULT
V
Current Flows into SS Pin
Part in FAULT
Part Exiting FAULT
Active Mode, SHDN Rising
Active Mode, SHDN Falling
Shutdown Mode
V
V
V
C
C
LT3579, T
LT3579-1, All T
C
C
V
V
V
100μA into FAULT Pin
V
SS
SS
SHDN
SHDN
SHDN
CLKOUT
CLKOUT
CLKOUT
CLKOUT
GATE
GATE
GATE
FAULT
= 30mV, Current Flows Out of SS pin
= 2.1V,
= 3V
= 80V
= 50V, GATE Off
= 3V
= 1.3V
= 0V
= 40V, FAULT Off
= 50pF
= 50pF
= 50pF
= 50pF
J
= 25°C
A
J
= 25°C. V
The
l
IN
denotes the specifi cations which apply over the full operating
= 5V, V
Note 3: Current limit guaranteed by design and/or correlation to static test.
Note 4: This IC includes overtemperature protection that is intended
to protect the device during momentary overload conditions. Junction
temperature will exceed 125°C when overtemperature protection is active.
Continuous operation over the specifi ed maximum operating junction
temperature may impair device reliability.
SHDN
= V
IN
, V
FAULT
= V
IN
l
l
l
l
l
l
l
l
l
l
l
l
unless otherwise noted. (Note 2).
1.65
1.27
1.24
MIN
800
800
700
950
5.7
5.7
9.5
1.9
30
1000
1.33
11.4
0.01
0.01
TYP
100
933
933
150
750
8.7
8.7
1.8
1.3
2.1
50
40
42
50
12
0
8
1100
1100
1050
MAX
11.3
11.3
1.95
1.41
1.38
13.4
200
300
800
0.1
2.3
85
60
.3
1
1
UNITS
35791f
mV
mV
mV
mV
mV
μA
μA
μA
μA
μA
μA
μA
μA
μA
ns
ns
%
%
V
V
V
V
V