Datasheet

LT3501
2
3501fd
elecTrical characTerisTics
absoluTe MaxiMuM raTings
V
IN1/2
, SHDN, PG1/2 ...................................... 25V/–0.3V
SW1/2 ....................................................................V
IN1/2
BST1/2 ........................................................... 35V/–0.3V
BST1/2 Pins Above SW1/2 ........................................ 25V
IND1/2 ......................................................................±5A
V
OUT1/2
........................................................ V
IN1/2
/–0.3V
FB1/2, SS1/2, R
T
/SYNC ............................................ 5.5V
V
C1/2
...................................................................... ±1mA
Operating Junction Temperature Range
LT3501EFE (Notes 2, 8) ..................... –40°C to 125°C
LT3501IFE (Notes 2, 8) ...................... –40°C to 125°C
Storage Temperature Range .................. –65°C to 150°C
Lead Temperature (Soldering, 10 sec) ................... 300°C
(Note 1)
The
l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
J
= 25°C. V
VIN1/2
= 15V, V
BST1/2
= open, V
RT/SYNC
= 2V, V
VOUT1/2
= open,
unless otherwise specified.
PARAMETER CONDITIONS MIN TYP MAX UNITS
SHDN Threshold V
OUT1/2
= 0V, R
T
/SYNC = 133k
l
1.23 1.28 1.37 V
SHDN Input Current V
SHDN
= 1.375V
V
SHDN
= 1.225V
7
2
10
3
13
5
µA
µA
Minimum Input Voltage Ch 1 (Note 3) V
FB1/2
= 0V, V
VOUT1/2
= 0V, V
IND1/2
= 0V, R
T
/SYNC = 133k 2.8 3 V
Minimum Input Voltage Ch 2 V
FB1/2
= 0V, V
VOUT1/2
= 0V, V
IND1/2
= 0V 2.8 3 V
Supply Shutdown Current Ch 1 V
SHDN
= 0V
l
9 30 µA
Supply Shutdown Current Ch 2 V
SHDN
= 0V 0 5 µA
Supply Quiescent Current Ch 1 V
FB1/2
= 0.9V 3.5 5 mA
Supply Quiescent Current Ch 2 V
FB1/2
= 0.9V 200 500 µA
Feedback Voltage Ch 1/Ch 2 V
VC1/2
= 1V
l
0.784 0.8 0.816 V
Feedback Voltage Line Regulation V
VIN1/2
= 3V to 25V
l
–1 0 1 %
Feedback Voltage Offset Ch 1 to Ch 2 V
VC1/2
= 1V
l
–16 0 16 mV
pin conFiguraTion
FE PACKAGE
20-LEAD PLASTIC TSSOP
1
2
3
4
5
6
7
8
9
10
TOP VIEW
20
19
18
17
16
15
14
13
12
11
V
IN1
SW1
IND1
V
OUT1
PG1
PG2
V
OUT2
IND2
SW2
V
IN2
BST1
SS/TRACK1
V
C1
FB1
R
T
/SYNC
SHDN
FB2
V
C2
SS/TRACK2
BST2
21
T
JMAX
= 125°C, θ
JA
= 45°C/W, θ
JC(PAD)
= 10°C/W
EXPOSED PAD (PIN 21) IS GND, MUST BE SOLDERED TO PCB
orDer inForMaTion
LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LT3501EFE#PBF LT3501EFE#TRPBF LT3501 20-Lead Plastic TSSOP –40°C to 125°C
LT3501IFE#PBF LT3501IFE#TRPBF LT3501 20-Lead Plastic TSSOP –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.
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/