Datasheet
LTC4012/
LTC4012-1/LTC4012-2
2
4012fa
absolute MaxiMuM ratings
DCIN ............................................................–14V to 30V
DCIN to CLP ................................................ –32V to 20V
CLP, CLN or SW to GND ............................. –0.3V to 30V
CLP to CLN ............................................................±0.3V
CSP, CSN or BAT to GND ........................... –0.3V to 28V
CSP to CSN ............................................................±0.3V
BOOST to GND ........................................... –0.3V to 36V
BOOST to SW...............................................–0.3V to 7V
(Note 1)
orDer inForMation
LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC4012CUF#PBF LTC4012CUF#TRPBF 4012
20-Lead (4mm × 4mm) Plastic QFN
0°C to 85°C
LTC4012CUF-1#PBF LTC4012CUF-1#TRPBF 40121
20-Lead (4mm × 4mm) Plastic QFN
0°C to 85°C
LTC4012CUF-2#PBF LTC4012CUF-2#TRPBF 40122
20-Lead (4mm × 4mm) Plastic QFN
0°C to 85°C
LTC4012IUF#PBF LTC4012IUF#TRPBF 4012
20-Lead (4mm × 4mm) Plastic QFN
–40°C to 125°C
LTC4012IUF-1#PBF LTC4012IUF-1#TRPBF 40121
20-Lead (4mm × 4mm) Plastic QFN
–40°C to 125°C
LTC4012IUF-2#PBF LTC4012IUF-2#TRPBF 40122
20-Lead (4mm × 4mm) Plastic QFN
–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/
SHDN, FVS0, FVS1 or V
FB
to GND ............... –0.3V to 7V
ACP, CHRG or ICL to GND .......................... –0.3V to 30V
Operating Temperature Range
(Note 2) ............................................. –40°C to 125°C
Junction Temperature (Note 3) ............................. 125°C
Storage Temperature Range ..................–65°C to 150°C
pin conFiguration
LTC4012 LTC4012-1
LTC4012-2
20 19 18 17 16
6 7 8
TOP VIEW
21
GND
UF PACKAGE
20-LEAD (4mm s 4mm) PLASTIC QFN
9 10
5
4
3
2
1
11
12
13
14
15
CLN
CLP
INFET
DCIN
ACP
CSP
CSN
PROG
ITH
BAT
BOOST
TGATE
SW
INTV
DD
BGATE
SHDN
CHRG
ICL
V
FB
FBDIV
T
JMAX
= 125°C,
JA
= 37°C/W
EXPOSED PAD (PIN 21) IS GND, MUST BE SOLDERED TO PCB
20 19 18 17 16
6 7 8
TOP VIEW
21
GND
UF PACKAGE
20-LEAD (4mm s 4mm) PLASTIC QFN
9 10
5
4
3
2
1
11
12
13
14
15
CLN
CLP
INFET
DCIN
ACP
CSP
CSN
PROG
ITH
BAT
BOOST
TGATE
SW
INTV
DD
BGATE
SHDN
CHRG
ICL
FVS0
FVS1
T
JMAX
= 125°C,
JA
= 37°C/W
EXPOSED PAD (PIN 21) IS GND, MUST BE SOLDERED TO PCB