LT8330
3
8330fa
For more information
www.linear.com/LT8330
elecTrical characTerisTics
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
IN
= 12V, EN/UVLO = 12V unless otherwise noted.
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
V
IN
Operating Voltage Range
l
3
40
V
V
IN
Quiescent Current at Shutdown
V
EN/UVLO
= 0.2V
l
0.9
2
2
5
µA
µA
V
EN/UVLO
= 1.5V
l
2
3.6
5
9.5
µA
µA
V
IN
Quiescent Current
Sleep Mode, Not Switching
l
5.5
8.5
10
15
µA
µA
Active Mode, Not Switching
l
780
840
1100
1200
µA
µA
FBX Regulation
FBX Regulation Voltage
FBX > 0V
FBX < 0V
l
l
1.568
–0.820
1.6
–0.80
1.632
–0.780
V
V
FBX Line Regulation
FBX > 0V, 3V < V
IN
< 40V
FBX < 0V, 3V < V
IN
< 40V
0.005
0.005
0.015
0.015
%/V
%/V
FBX Pin Current
FBX = 1.6V, –0.8V
l
–10
10
nA
Oscillator
Switching Frequency (f
OSC
)
V
IN
= 24V
l
1.85
2.0
2.15
MHz
Minimum On-Time
V
IN
= 24V
65
105
ns
Minimum Off-Time
V
IN
= 24V
47
65
ns
Switch
Maximum Switch Current Limit Threshold
l
1.0
1.2
1.4
A
Switch R
DS(ON)
I
SW
= 0.5A
330
mΩ
Switch Leakage Current
V
SW
= 60V
0.1
1
µA
EN/UVLO Logic
EN/UVLO Pin Threshold (Rising)
Start Switching
l
1.620
1.68
1.745
V
EN/UVLO Pin Threshold (Falling)
Stop Switching
l
1.556
1.60
1.644
V
EN/UVLO Pin Current
V
EN/UVLO
= 1.6V
l
–40
40
nA
Soft-Start
Soft-Start Time
V
IN
= 24V
1
ms
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:
INTV
CC
cannot be externally driven. No additional components or
loading is allowed on this pin.
Note 3:
The LT8330E 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
LT8330I is guaranteed over the full –40°C to 125°C operating junction
temperature range. The LT8330H is guaranteed over the full –40°C to
150°C operating junction temperature range. High junction temperatures
degrade operating lifetimes. Operating lifetime is derated at junction
temperatures greater than 125°C.
Note 4:
The IC includes overtemperature protection that is intended to
protect the device during overload conditions. Junction temperature will
exceed 150°C when overtemperature protection is active. Continuous
operation above the specified maximum operating junction temperature
will reduce lifetime.
