LTC4350
2
4350fb
pin conFiguraTionabsoluTe MaxiMuM raTings
Supply Voltage (V
CC
) ................................................17V
Input Voltage
TIMER ................................................... –0.3V to 1.2V
R
+
, R
–
(Note 2) ...................................... –0.3V to 17V
FB ......................................................... –0.3V to 5.3V
OV, UV ....................................................... –0.3V to 17V
Output Voltage
COMP1 .................................................... –0.3V to 6V
COMP2 .................................................... –0.3V to 3V
GAIN, SB ............................................... –0.3V to 5.6V
GATE (Note 3) ............................................ –0.3V to 20V
I
OUT
, STATUS ............................................. –0.3V to 17V
R
SET
............................................................. –0.3V to 1V
Operating Temperature Range
LTC4350C ................................................ 0°C to 70°C
LTC4350I .............................................–40°C to 85°C
Storage Temperature Range .................. –65°C to 150°C
Lead Temperature (Soldering, 10 sec)................... 300°C
(Note 1)
GN PACKAGE
16-LEAD PLASTIC SSOP
1
2
3
4
5
6
7
8
TOP VIEW
16
15
14
13
12
11
10
9
UV
OV
TIMER
GAIN
COMP2
COMP1
SB
GND
V
CC
STATUS
GATE
R
+
R
–
I
OUT
R
SET
FB
T
JMAX
= 150°C, θ
JA
= 135°C/W
orDer inForMaTion
LEAD FREE FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC4350CGN#PBF LTC4350CGN#TRPBF 4350 16-Lead Plastic SSOP 0°C to 70°C
LTC4350IGN#PBF LTC4350IGN#TRPBF 4350I 16-Lead Plastic SSOP –40°C to 85°C
Consult LTC Marketing for parts specified with wider operating temperature ranges.
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
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
DC Characteristics
I
CC
V
CC
Supply Current UV = V
CC
l
1.0 1.6 2.0 mA
V
LKOH
V
CC
Undervoltage Lockout High
l
2.36 2.45 2.52 V
V
LKOL
V
CC
Undervoltage Lockout Low
l
2.24 2.34 2.44 V
V
FB
FB Pin Voltage 0°C to 85°C (LTC4350I) or 0°C to 70°C (LTC4350C)
–40°C to 85°C (LTC4350I)
1.208
1.196
1.220
1.220
1.236
1.244
V
V
V
FBLIR
FB Line Regulation V
CC
= 3.3V to 12V, COMP1 = 1.240V 0.02 0.05 %/V
V
FBLOR
FB Load Regulation COMP1 = 2V
COMP1 = 0.64V
l
l
–0.0008
0.003
–0.1
0.1
%
%
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
CC
= 5V unless otherwise noted.