LT3505 LINER [Linear Technology], LT3505 Datasheet - Page 2

• Manufacturer Part Number: LT3505
• Description: Monolithic Dual Tracking 3A Step-Down Switching
• Manufacturer: LINER [Linear Technology]

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