Datasheet

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