LT3508 LINER [Linear Technology], LT3508 Datasheet - Page 2

• Manufacturer Part Number: LT3508
• Description: Dual Monolithic 1.4A Step-Down Switching Regulator
• Manufacturer: LINER [Linear Technology]

ABSOLUTE MAXIMUM RATINGS
LT3508
PIN CONFIGURATION
ORDER INFORMATION
LEAD FREE FINISH
LT3508EFE#PBF
LT3508IFE#PBF
LT3508HFE#PBF
LT3508EUF#PBF
LT3508IUF#PBF
LT3508HUF#PBF
Consult LTC Marketing for parts specifi ed with wider operating temperature ranges.*Temperature grades are identifi ed by a label on the shipping container.
Consult LTC Marketing for information on non-standard lead based fi nish parts.
For more information on lead free part marking, go to:
For more information on tape and reel specifi cations, go to:
V
BOOST Pin Voltage ...................................................60V
BOOST Above SW Voltage ........................................30V
SHDN, PG Voltage .....................................................40V
TRACK/SS, FB, R
Operating Junction Temperature Range (Note 2)
2
IN
LT3508E ............................................. –40°C to 125°C
LT3508I .............................................. –40°C to 125°C
LT3508H ............................................ –40°C to 150°C
Pin Voltage ............................................(–0.3V), 40V
EXPOSED PAD (PIN 17) IS GND AND MUST BE SOLDERED TO PCB
TRACK/SS1
TRACK/SS2
BOOST1
BOOST2
T
SW1
SW2
V
V
/SYNC, V
IN1
IN2
θ
16-LEAD PLASTIC TSSOP
JA
TAPE AND REEL
LT3508EFE#TRPBF
LT3508IFE#TRPBF
LT3508HFE#TRPBF
LT3508EUF#TRPBF
LT3508IUF#TRPBF
LT3508HUF#TRPBF
1
2
3
4
5
6
7
8
= 40°C/W, θ
FE PACKAGE
TOP VIEW
C
17
Voltage ..........................6V
JC
= 10°C/W
16
15
14
13
12
11
10
9
FB1
V
PG1
R
SHDN
PG2
V
FB2
C1
T
C2
/SYNC
http://www.linear.com/leadfree/
PART MARKING*
3508FE
3508FE
3508HFE
3508
3508
3508H
http://www.linear.com/tapeandreel/
(Note 1)
Storage Temperature Range
Lead Temperature (Soldering, 10 sec)
QFN .................................................... –65°C to 150°C
TSSOP ............................................... –65°C to 150°C
TSSOP .............................................................. 300°C
PACKAGE DESCRIPTION
16-Lead Plastic TSSOP
16-Lead Plastic TSSOP
16-Lead Plastic TSSOP
24-Lead (4mm × 4mm) Plastic QFN
24-Lead (4mm × 4mm) Plastic QFN
24-Lead (4mm × 4mm) Plastic QFN
TRACK/SS1
EXPOSED PAD (PIN 25) IS GND AND MUST BE SOLDERED TO PCB
GND
GND
GND
GND
FB1
24-LEAD (4mm 4mm) PLASTIC QFN
1
2
3
4
5
6
24 23 22 21 20 19
θ
7
JA
= 40°C/W, θ
8
UF PACKAGE
TOP VIEW
9
25
10 11 12
JC
= 10°C/W
18
17
16
15
14
13
TEMPERATURE RANGE
–40°C to 125°C
–40°C to 125°C
–40°C to 150°C
–40°C to 125°C
–40°C to 125°C
–40°C to 150°C
FB2
TRACK/SS2
GND
GND
GND
GND
3508fb