Datasheet
LTC3122
2
3122fa
For more information www.linear.com/LTC3122
absoluTe MaxiMuM raTings
V
IN
Voltage .................................................. –0.3V to 6V
V
OUT
Voltage ............................................ –0.3V to 18V
SW Voltage (Note 2) .................................. –0.3V to 18V
SW Voltage (Pulsed < 100ns) (Note 2) ....... –0.3V to 19V
V
C
, RT Voltage .......................................... –0.3V to V
CC
CAP Voltage
V
OUT
< 5.7V ............................–0.3V to (V
OUT
+ 0.3V)
5.7V ≤ V
OUT
≤ 11.7V...... (V
OUT
– 6V) to (V
OUT
+ 0.3V)
V
OUT
> 11.7V .................................(V
OUT
– 6V) to 12V
(Note 1)
12
11
10
9
8
7
13
PGND
1
2
3
4
5
6
CAP
V
OUT
SGND
SD
FB
V
C
SW
PGND
V
IN
PWM/SYNC
V
CC
RT
TOP VIEW
DE PACKAGE
12-LEAD (4mm × 3mm) PLASTIC DFN
T
JMAX
= 125°C, θ
JA
= 43°C/W (NOTE 5), θ
JC
= 5°C/W
EXPOSED PAD (PIN 13) IS PGND,
MUST BE SOLDERED TO PCB FOR RATED THERMAL PERFORMANCE
1
2
3
4
5
6
SW
PGND
V
IN
PWM/SYNC
V
CC
RT
12
11
10
9
8
7
CAP
V
OUT
SGND
SD
FB
V
C
TOP VIEW
13
PGND
MSE PACKAGE
12-LEAD PLASTIC MSOP
T
JMAX
= 150°C, θ
JA
= 40°C/W (NOTE 5), θ
JC
= 10°C/W
EXPOSED PAD (PIN 13) IS PGND,
MUST BE SOLDERED TO PCB FOR RATED THERMAL PERFORMANCE
pin conFiguraTion
orDer inForMaTion
LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC3122EDE#PBF LTC3122EDE#TRPBF 3122 12-Lead (4mm × 3mm) Plastic DFN –40°C to 125°C
LTC3122IDE#PBF LTC3122IDE#TRPBF 3122 12-Lead (4mm × 3mm) Plastic DFN –40°C to 125°C
LTC3122EMSE#PBF LTC3122EMSE#TRPBF 3122 12-Lead Plastic MSOP –40°C to 125°C
LTC3122IMSE#PBF LTC3122IMSE#TRPBF 3122 12-Lead Plastic MSOP –40°C to 125°C
LTC3122HMSE#PBF LTC3122HMSE#TRPBF 3122 12-Lead Plastic MSOP –40°C to 150°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/
All Other Pins ............................................... –0.3V to 6V
Operating Junction Temperature Range (Notes 3, 4)
LTC3122E/LTC3122I .......................... –40°C to 125°C
LTC3122H .......................................... –40°C to 150°C
Storage Temperature Range .................. –65°C to 150°C
MSE Lead Temperature (Soldering, 10sec) ........... 300°C