lt3694-1 Linear Technology Corporation, lt3694-1 Datasheet - Page 2

• Manufacturer Part Number: lt3694-1
• Description: Lt3694/lt3694-1 - 36v, 2.6a Monolithic Buck Regulator With Dual Ldo
• Manufacturer: Linear Technology Corporation

ABSOLUTE MAXIMUM RATINGS
LT3694/LT3694-1
V
BST ...........................................................................55V
BST Above SW ..........................................................25V
PGOOD ......................................................................16V
TRK/SS, V
BIAS, LIM2, LIM3 Pins ...............................................7V
PIN CONFIGURATION
ORDER INFORMATION
LEAD FREE FINISH
LT3694EUFD#PBF
LT3694IUFD#PBF
LT3694EFE#PBF
LT3694IFE#PBF
LT3694-1EUFD#PBF
LT3694-1IUFD#PBF
LT3694-1EFE#PBF
LT3694-1IFE#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
IN
, EN/UVLO (Note 6) ............................... –0.3V to 70V
C
SYNC (CLKOUT)
EXPOSED PAD (PIN 29) IS GND, MUST BE SOLDERED TO PCB
, FB, RT, SYNC Pins ...................................6V
EN/UVLO
LT3694-1 PINOUT IS SHOWN IN PARENTHESIS
TRK/SS1
TRK/SS2
PGOOD
DRV2
FB2
28-LEAD (4mm 5mm) PLASTIC QFN
RT
TAPE AND REEL
LT3694EUFD#TRPBF
LT3694IUFD#TRPBF
LT3694EFE#TRPBF
LT3694IFE#TRPBF
LT3694-1EUFD#TRPBF
LT3694-1IUFD#TRPBF
LT3694-1EFE#TRPBF
LT3694-1IFE#TRPBF
1
2
3
4
5
6
7
8
28 27 26 25 24
9 10
θ
JA
UFD PACKAGE
= 34°C/W
TOP VIEW
11 12 13
GND
29
23
14
22
21
20
19
18
17
16
15
http://www.linear.com/leadfree/
DA
BST
BIAS
V
FB1
TRK/SS3
FB3
DRV3
C1
PART MARKING*
3694
3694
LT3694FE
LT3694FE
36941
36941
LT3694FE-1
LT3694FE-1
http://www.linear.com/tapeandreel/
(Note 1)
Operating Junction Temperature Range (Notes 2 and 5)
Storage Temperature Range ................... –65°C to 150°C
Lead Temperature (Soldering, 10 Sec)
LT3694E ............................................. –40°C to 125°C
LT3694I .............................................. –40°C to 125°C
(TSSOP Only) ................................................... 300°C
PACKAGE DESCRIPTION
28-Lead (4mm × 5mm) Plastic QFN
28-Lead (4mm × 5mm) Plastic QFN
20-Lead Plastic TSSOP
20-Lead Plastic TSSOP
28-Lead (4mm × 5mm) Plastic QFN
28-Lead (4mm × 5mm) Plastic QFN
20-Lead Plastic TSSOP
20-Lead Plastic TSSOP
EXPOSED PAD (PIN 21) IS GND, MUST BE SOLDERED TO PCB
SYNC(CLKOUT)
LT3694-1 PINOUT IS SHOWN IN PARENTHESIS
EN/UVLO
TRK/SS1
TRK/SS2
PGOOD
DRV2
LIM2
FB2
V
RT
IN
20-LEAD PLASTIC TSSOP
10
1
2
3
4
5
6
7
8
9
θ
JA
FE PACKAGE
= 38°C/W
TOP VIEW
GND
21
20
19
18
17
16
15
14
13
12
11
TEMPERATURE RANGE
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
SW
DA
BST
BIAS
V
FB1
TRK/SS3
FB3
DRV3
LIM3
C1
36941fa