LT3798
ABSOLUTE MAXIMUM RATINGS
(Note 1)
PIN CONFIGURATION
TOP VIEW
CTRL1
CTRL2
CTRL3
V
REF
OVP
VC
COMP
+
COMP
–
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
V
IN_SENSE
SENSE
GATE
INTV
CC
EN/UVLO
V
IN
DCM
FB
EN/UVLO...................................................................30V
V
IN
............................................................................42V
INTV
CC
......................................................................12V
CTRL1, CTRL2, CTRL3 ................................................4V
FB, V
REF
, COMP
+
........................................................3V
VC, OVP, COMP
–
.........................................................4V
SENSE ......................................................................0.4V
V
IN_SENSE
.................................................................1mA
DCM .......................................................................±3mA
Operating Temperature Range (Note 2)
LT3798E/LT3798I................................... –40°C to 125°C
Storage Temperature Range .................. –65°C to 150°C
17
GND
MSE PACKAGE
16-LEAD PLASTIC MSOP
θ
JA
= 50°C/W,
θ
JC
= 10°C/W
EXPOSED PAD (PIN 17) IS GND, MUST BE SOLDERED TO PCB
ORDER INFORMATION
LEAD FREE FINISH
LT3798EMSE#PBF
LT3798IMSE#PBF
TAPE AND REEL
LT3798EMSE#TRPBF
LT3798IMSE#TRPBF
PART MARKING*
3798
3798
PACKAGE DESCRIPTION
16-Lead Plastic MSOP
16-Lead Plastic MSOP
TEMPERATURE RANGE
–40°C to 125°C
–40°C to 125°C
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
For more information on lead free part marking, go to:
http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to:
http://www.linear.com/tapeandreel/
ELECTRICAL CHARACTERISTICS
PARAMETER
Input Voltage Range
V
IN
Quiescent Current
V
IN
Quiescent Current, INTV
CC
Overdriven
V
IN
Shunt Regulator Voltage
V
IN
Shunt Regulator Current Limit
INTV
CC
Quiescent Current
EN/UVLO Pin Threshold
EN/UVLO Pin Hysteresis Current
V
IN_SENSE
Threshold
V
REF
Voltage
CTRL1/CTRL2/CTRL3 Pin Bias Current
CONDITIONS
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
IN
= 18V, INTV
CC
= 11V, unless otherwise noted.
MIN
10
V
EN/UVLO
= 0.2V
V
EN/UVLO
= 1.5V, Not Switching
V
INTVCC
= 11V
I = 1mA
V
EN/UVLO
= 0.2V
V
EN/UVLO
= 1.5V, Not Switching
EN/UVLO Pin Voltage Rising
EN/UVLO=1V
Turn Off
0 μA Load
200μA Load
CTLR1/CTRL2/CTRL3 = 1V
l
l
l
TYP
60
70
60
40
8
MAX
38
70
UNITS
V
μA
μA
μA
V
mA
45
12.5
1.8
1.21
8
1.97
1.95
15.5
2.2
1.25
10
27
2.0
1.98
17.5
2.7
1.29
12
2.03
2.03
±30
μA
mA
V
μA
μA
V
V
nA
3798f
2
LINER [ LINEAR TECHNOLOGY ]
