Datasheet

LTC3129
2
3129fa
For more information www.linear.com/LTC3129
absoluTe MaxiMuM raTings
V
IN
, V
OUT
Voltages .................................... –0.3V to 18V
SW1 DC Voltage ............................ –0.3V to (V
IN
+ 0.3V)
SW2 DC Voltage..........................–0.3V to (V
OUT
+ 0.3V)
SW1, SW2 Pulsed (<100ns) Voltage ..............–1V to 19V
BST1 Voltage ....................(SW1 – 0.3V) to (SW1 + 6V)
BST2 Voltage ....................(SW2 – 0.3V) to (SW2 + 6V)
RUN, PGOOD Voltages ............................... –0.3V to 18V
V
CC
, FB, PWM, MPPC Voltages .................... –0.3V to 6V
PGOOD Sink Current .............................................15mA
Operating Junction Temperature Range
(Notes 2, 5) ............................................ –40°C to 125°C
Storage Temperature Range .................. –65°C to 150°C
MSE Lead Temperature (Soldering, 10 sec) ..........300°C
(Notes 1, 8)
16 15 14 13
5 6 7 8
TOP VIEW
UD PACKAGE
16-LEAD (3mm × 3mm) PLASTIC QFN
9
10
11
12
4
3
2
1BST1
V
IN
V
CC
RUN
V
OUT
PGOOD
PWM
NC
SW1 PGND SW2 BST2
MPPC
GND
FB
NC
17
PGND
T
JMAX
= 125°C, θ
JC
= 7.5°C/W, θ
JA
= 68°C/W (NOTE 6)
EXPOSED PAD (PIN 17) IS PGND, MUST BE SOLDERED TO PCB
1
2
3
4
5
6
7
8
V
CC
RUN
MPPC
GND
FB
NC
NC
PWM
16
15
14
13
12
11
10
9
V
IN
BST1
SW1
PGND
SW2
BST2
V
OUT
PGOOD
TOP VIEW
MSE PACKAGE
16-LEAD PLASTIC MSOP
17
PGND
T
JMAX
= 125°C, θ
JC
= 10°C/W, θ
JA
= 40°C/W (NOTE 6)
EXPOSED PAD (PIN 17) IS PGND, MUST BE SOLDERED TO PCB
pin conFiguraTion
orDer inForMaTion
LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC3129EUD#PBF LTC3129EUD#TRPBF LGDR 16-Lead (3mm × 3mm) Plastic QFN –40°C to 125°C
LTC3129IUD#PBF LTC3129IUD#TRPBF LGDR 16-Lead (3mm × 3mm) Plastic QFN –40°C to 125°C
LTC3129EMSE#PBF LTC3129EMSE#TRPBF 3129 16-Lead Plastic MSOP –40°C to 125°C
LTC3129IMSE#PBF LTC3129IMSE#TRPBF 3129 16-Lead Plastic MSOP –40°C to 125°C
Consult LT C Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping
container.Consult LT C 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/