LT3501 LINER [Linear Technology], LT3501 Datasheet - Page 2

• Manufacturer Part Number: LT3501
• Description: Monolithic Dual Tracking 3A Step-Down Switching Regulator
• 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 specifi cations are at T
unless otherwise specifi ed.
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 1/2
Feedback Voltage Line Regulation
Feedback Voltage Offset Ch 1 to Ch 2
Feedback Bias Current Ch 1/2
Error Amplifi er g
Error Amplifi er Gain Ch 1/2
Error Amplifi er to Switch Gain Ch 1/2
2
IN1/2
OUT1/2
C1/2
LT3501EFE (Notes 2, 8) ..................... –40°C to 125°C
LT3501IFE (Notes 2, 8) ...................... –40°C to 125°C
, SHDN, PG1/2 ...................................... 25V/–0.3V
......................................................................±1mA
........................................................ V
m
Ch 1/2
T
/SYNC ............................................5.5V
CONDITIONS
V
V
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
FB1/2
VC1/2
= 0V, V
= 0V, V
= 0.9V
= 0.9V
= 0.8V, V
= 1.375V
= 1.225V
= 0V
= 0V
= 1V
= 1V
= 1V, I
= 3V to 25V
= 0V, R
IN1/2
J
= 25°C. V
VC1/2
VOUT1/2
VOUT1/2
T
VC1/2
/–0.3V
/SYNC = 133k
The
IN1/2
= ±5µA
= 1V
= 0V, V
= 0V, V
●
VIN1/2
denotes the specifi cations which apply over the full operating
IND1/2
IND1/2
= 15V, V
PACKAGE/ORDER INFORMATION
Consult LTC Marketing for parts specifi ed with wider operating temperature ranges.
Order Options Tape and Reel: Add #TR
Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF
Lead Free Part Marking:
= 0V, R
= 0V
BST1/2
T
EXPOSED PAD (PIN 21) IS GND, MUST BE SOLDERED TO PCB
/SYNC = 133k
= open, V
T
JMAX
V
V
ORDER PART NUMBER
IND1
IND2
SW1
OUT1
OUT2
SW2
V
V
PG1
PG2
IN1
IN2
= 125°C, θ
http://www.linear.com/leadfree/
20-LEAD PLASTIC TSSOP
RT/SYNC
10
1
2
3
4
5
6
7
8
9
LT3501EFE
LT3501IFE
●
●
●
●
●
●
●
JA
FE PACKAGE
TOP VIEW
= 45°C/W, θ
= 2V, V
21
0.784
–250
1.23
MIN
–16
150
–1
7
2
JC(PAD)
VOUT1/2
20
19
18
17
16
15
14
13
12
11
1000
1.28
TYP
200
275
BST1
SS/TRACK1
V
FB1
R
SHDN
FB2
V
SS/TRACK2
BST2
= 10°C/W
2.8
2.8
3.5
0.8
3.3
10
75
3
9
0
0
0
C1
T
C2
/SYNC
= open,
0.816
MAX
1.37
500
250
450
13
30
16
5
3
3
5
5
1
UNITS
µmho
3501fb
V/V
A/V
mA
mV
µA
µA
µA
µA
µA
nA
%
V
V
V
V