LT4180
2
4180fb
For more information www.linear.com/4180
pin conFiguraTionabsoluTe MaxiMuM raTings
V
IN
............................................................. –0.3V to 52V
SENSE.......................................................V
IN
– 0.3V to V
IN
INTVCC, RUN, FB, OV, ROSC, OSC,
DIV0, DIV1, DIV2, SPREAD, CHOLD1,
CHOLD2, CHOLD3, CHOLD4, DRAIN, COMP,
GUARD2, GUARD3, GUARD4, V
PP
............ –0.3V to 5.5V
V
IN
Pin Current ....................................................... 10mA
INTVCC Pin Current .............................................–10mA
COSC Pin Current ..................................................3.3mA
Maximum Junction Temperature .......................... 125°C
Operating Junction Temperature Range (Note 2)
E-, I-Grades ....................................... –40°C to 125°C
MP-Grade .......................................... –55°C to 125°C
Storage Temperature Range .................. –65°C to 125°C
(Note 1)
1
2
3
4
5
6
7
8
9
10
11
12
GN PACKAGE
24-LEAD NARROW PLASTIC SSOP
24
23
22
21
20
19
18
17
16
15
14
13
INTV
CC
DRAIN
COMP
CHOLD1
GUARD2
CHOLD2
GUARD3
CHOLD3
GUARD4
CHOLD4
FB
GND
V
IN
V
PP
SENSE
RUN
OV
SPREAD
DIV0
DIV1
DIV2
OSC
ROSC
COSC
T
JMAX
= 150°C, θ
JA
= 85°C/W
orDer inForMaTion
LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LT4180EGN#PBF LT4180EGN#TRPBF LT4180GN 24-Lead Narrow Plastic SSOP –40°C to 125°C
LT4180IGN#PBF LT4180IGN#TRPBF LT4180GN 24-Lead Narrow Plastic SSOP –40°C to 125°C
LT4180MPGN#PBF LT4180MPGN#TRPBF LT4180GN 24-Lead Narrow Plastic SSOP –55°C to 125°C
Consult LT C 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
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
IN
Operating Supply Voltage
l
3.10 50 V
IV
IN
Input Quiescent Current ROSC Open, COSC Open, SENSE = V
IN
l
1 2 mA
V
REF
Reference Voltage V
CHOLD2
= V
CHOLD3
= 1.2V, Measured at CHOLD4
During Track ∆V
OUT
Clock Phase
l
1.209
1.197
1.221
1.221
1.233
1.245
V
V
I
LIM
Open-Drain Current Limit With FB = V
REF
+ 200mV, OSC Stopped with
Voltage Feedback Loop Closed
5 12 17 mA
V
OL
DRAIN Low Voltage V
IN
= 3V 0.3 V
V
INTVCC
LDO Regulator Output Voltage V
IN
= 5V 3.15 V
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C, V
IN
= SENSE = 5V, unless otherwise noted.
