LT3795
absoluTe MaxiMuM raTings
(Note 1)
pin conFiguraTion
TOP VIEW
ISP
ISN
TG
GND
ISMON
CTRL2
FB
V
C
CTRL1
1
2
3
4
5
6
7
8
9
29
GND
28 IVINCOMP
27 IVINP
26 IVINN
25 OVLO
24 EN/UVLO
23 V
IN
22 GND
21 GND
20 INTV
CC
19 GATE
18 SENSE
17 GND
16
OPENLED
15
SHORTLED
V
IN
.......................................................................... 110V
EN/UVLO ................................................................. 110V
ISP, ISN ................................................................... 110V
TG, GATE...............................................................Note 2
IVINP, IVINN ............................................................ 110V
V
IN
- IVINN ................................................... –0.3V to 4V
INTV
CC
(Note 3) .....................................8.6V, V
IN
+ 0.3V
PWM,
SHORTLED, OPENLED
.....................................12V
FB, RAMP, OVLO .........................................................8V
CTRL1, CTRL2...........................................................15V
SENSE ......................................................................0.5V
ISMON, IVINCOMP .....................................................5V
V
C
, V
REF
, SS ................................................................3V
RT ...............................................................................2V
Operating Junction Temperature Range (Note 4)
LT3795E/LT3795I .................................. –40 to 125°C
LT3795H ................................................ –40 to 150°C
Storage Temperature Range ......................–65 to 150°C
V
REF
10
SS 11
RT 12
RAMP 13
PWM 14
FE PACKAGE
28-LEAD PLASTIC TSSOP
T
JMAX
= 150°C,
θ
JA
= 30°C/W,
θ
JC
= 10°C/W
EXPOSED PAD (PIN 29) IS GND, MUST BE SOLDERED TO PCB
orDer inForMaTion
LEAD FREE FINISH
LT3795EFE#PBF
LT3795IFE#PBF
LT3795HFE#PBF
TAPE AND REEL
LT3795EFE#TRPBF
LT3795IFE#TRPBF
LT3795HFE#TRPBF
PART MARKING*
LT3795FE
LT3795FE
LT3795FE
PACKAGE DESCRIPTION
28-Lead Plastic TSSOP
28-Lead Plastic TSSOP
28-Lead Plastic TSSOP
TEMPERATURE RANGE
–40°C to 125°C
–40°C to 125°C
–40°C to 150°C
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
Consult LTC Marketing for information on non-standard lead based finish parts.
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
V
IN
Minimum Operating Voltage
V
IN
Shutdown I
Q
V
IN
Operating I
Q
(Not Switching)
V
REF
Voltage
V
REF
Pin Line Regulation
V
REF
Pin Load Regulation
SENSE Current Limit Threshold
CONDITIONS
The
l
denotes the specifications which apply over the full operating temperature
range, otherwise specifications are at T
A
= 25°C, V
IN
= 24V, EN/UVLO = 24V, CTRL1 = CTRL2 = 2V, PWM = 5V, unless otherwise noted.
MIN
TYP
MAX
4.5
10
22
2.9
l
UNITS
V
µA
µA
mA
V
m%/V
m%/µA
V
IN
Tied to INTV
CC
EN/UVLO = 0V, PWM = 0V
EN/UVLO = 1.15V, PWM = 0V
R
T
= 82.5k to GND, FB = 1.5V
–100µA ≤ I
REF
≤ 10µA
4.5V < V
IN
< 110V
–100µA ≤ I
REF
≤ 0µA
l
3.5
2.06
1.97
2.015
1.5
10
100
117
125
mV
3795f
2
For more information
LINEAR_DIMENSIONS [ LINEAR DIMENSIONS SEMICONDUCTOR ]
