ltc3612 Linear Technology Corporation, ltc3612 Datasheet - Page 2

• Manufacturer Part Number: ltc3612
• Description: 3a, 4mhz Monolithic Synchronous Step-down Dc/dc Converter
• Manufacturer: Linear Technology Corporation

ABSOLUTE MAXIMUM RATINGS
LTC3612
PV
SW Voltage ..................................–0.3V to (PV
ITH, RT/SYNC Voltages ............... –0.3V to (SV
DDR, TRACK/SS Voltages ........... –0.3V to (SV
MODE, RUN, V
PGOOD Voltage ............................................ –0.3V to 6V
PIN CONFIGURATION
ORDER INFORMATION
LEAD FREE FINISH
LTC3612EUDC#PBF
LTC3612IUDC#PBF
LTC3612EFE#PBF
LTC3612IFE#PBF
Consult LTC Marketing for parts specifi ed with wider operating temperature ranges. *The temperature grade is identifi ed by a label on the shipping container.
Consult LTC Marketing for information on non-standard lead based fi nish parts.
For more information on lead free part marking, go to:
For more information on tape and reel specifi cations, go to:
2
IN
, SV
IN
, PV
EXPOSED PAD (PIN 21) IS PGND, MUST BE SOLDERED TO PCB
RT/SYNC
SGND
IN_DRV
FB
DDR
20-LEAD (3mm 4mm) PLASTIC QFN
SW
SW
NC
Voltages .......... –0.3V to (SV
1
2
3
4
5
6
T
JMAX
Voltages ..................... –0.3V to 6V
TAPE AND REEL
LTC3612EUDC#TRPBF
LTC3612IUDC#TRPBF
LTC3612EFE#TRPBF
LTC3612IFE#TRPBF
20 19 18 17
UDC PACKAGE
7
TOP VIEW
= 125°C, θ
8
21
9 10
JA
= 43°C/W
16
15
14
13
12
11
PGOOD
RUN
SV
PV
SW
SW
IN
IN_DRV
http://www.linear.com/leadfree/
PART MARKING*
LDQT
LDQT
LTC3612FE
LTC3612FE
http://www.linear.com/tapeandreel/
IN
IN
IN
IN
+ 0.3V)
+ 0.3V)
+ 0.3V)
+ 0.3V)
(Note 1)
Operating Junction Temperature Range
(Notes 2, 11) .......................................... –40°C to 125°C
Storage Temperature .............................. –65°C to 150°C
Refl ow Peak Body Temperature (QFN) .................. 260°C
Lead Temperature (Soldering, 10 sec)
TSSOP .............................................................. 300°C
PACKAGE DESCRIPTION
20-Lead (3mm × 4mm) Plastic QFN
20-Lead (3mm × 4mm) Plastic QFN
20-Lead Plastic TSSOP
20-Lead Plastic TSSOP
EXPOSED PAD (PIN 21) IS PGND, MUST BE SOLDERED TO PCB
TRACK/SS
RT/SYNC
PGOOD
MODE
SGND
SV
RUN
DDR
V
ITH
FB
IN
20-LEAD PLASTIC TSSOP
T
10
1
2
3
4
5
6
7
8
9
JMAX
FE PACKAGE
= 125°C, θ
TOP VIEW
21
JA
= 38°C/W
20
19
18
17
16
15
14
13
12
11
PV
SW
NC
SW
PV
PV
SW
NC
SW
NC
TEMPERATURE RANGE
–40°C to 85°C
–40°C to 125°C
–40°C to 85°C
–40°C to 125°C
IN_DRV
IN
IN
3612f