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LTC3612EUDC#PBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P30
LTC3612
28
3612fc
For more information www.linear.com/LTC3612
package DescripTion
FE20 (CB) TSSOP REV K 0913
0.09 – 0.20
(.0035 – .0079)
0° – 8°
0.25
REF
RECOMMENDED SOLDER PAD LAYOUT
0.50 – 0.75
(.020 – .030)
4.30 – 4.50*
(.169 – .177)
1 3 4
5
6
7
8 9 10
DETAIL A
DETAIL A IS THE PART OF
THE LEAD FRAME FEATURE
FOR REFERENCE ONLY
NO MEASUREMENT PURPOSE
111214 13
6.40 – 6.60*
(.252 – .260)
3.86
(.152)
2.74
(.108)
20 1918 17 16 15
1.20
(.047)
MAX
0.05 – 0.15
(.002 – .006)
0.65
(.0256)
BSC
0.195 – 0.30
(.0077 – .0118)
TYP
2
2.74
(.108)
0.45 ±0.05
0.65 BSC
4.50 ±0.10
6.60 ±0.10
1.05 ±0.10
3.86
(.152)
MILLIMETERS
(INCHES)
*DIMENSIONS DO NOT INCLUDE MOLD FLASH. MOLD FLASH
SHALL NOT EXCEED 0.150mm (.006") PER SIDE
NOTE:
1. CONTROLLING DIMENSION: MILLIMETERS
2. DIMENSIONS ARE IN
3. DRAWING NOT TO SCALE
SEE NOTE 4
4. RECOMMENDED MINIMUM PCB METAL SIZE
FOR EXPOSED PAD ATTACHMENT
6.40
(.252)
BSC
FE Package
20-Lead Plastic TSSOP (4.4mm)
(Reference LTC DWG # 05-08-1663 Rev K)
Exposed Pad Variation CB
DETAIL A
0.60
(.024)
REF
0.28
(.011)
REF
LTC3612
29
3612fc
For more information www.linear.com/LTC3612
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa-
tion that the interconnection of its circuits as described herein will not infringe on existing patent rights.
revision hisTory
REV DATE DESCRIPTION PAGE NUMBER
A 08/10 Updated Temperature Range in Order Information 2
Edited Electrical Characteristics table and updated Note 2 3, 4
Updated text in graphs G19, G31 7, 9
Updated Pin 16/Pin 3 and Pin 21/Pin 21 text 10
Updated Functional Block Diagram 11
Updated Burst Mode Operation—External Clamp section 13
Updated Internal and External Compensation section 18
Updated Soft-Start section 19
Updated Timing Resistor equation in Design Example section 23
Updated TA02a and TA02c in Typical Applications 25
Updated Related Parts 30
B 12/13 Add H and MP grades and applicable temperature range refs
Revised Typical Performance Characteristics graphs
Revised inductor and input capacitor sections
throughout
7-9
15-16
C 11/14 Changed Minimum Spec for Top Switch Current Limit (Duty Cycle = 100%) 3
LTC3612
30
3612fc
For more information www.linear.com/LTC3612
LINEAR TECHNOLOGY CORPORATION 2009
LT 1114 REV C • PRINTED IN USA
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507
●
www.linear.com/LTC3612
relaTeD parTs
Typical applicaTion
DDR Termination with Ratiometric Tracking of V
DD
, 1MHz
Ratiometric Start-Up
PART NUMBER DESCRIPTION COMMENTS
LTC3614 5.5V, 4A (I
OUT
), 4MHz, Synchronous Step-Down DC/DC
Converter with Tracking and DDR
95% Efficiency, V
IN
: 2.25V to 5.5V, V
OUT(MIN)
= 0.6V, I
Q
= 75µA,
I
SD
< 1µA, 3mm × 5mm QFN-24 Package
LTC3616 5.5V, 6A (I
OUT
), 4MHz, Synchronous Step-Down DC/DC
Converter with Tracking and DDR
95% Efficiency, V
IN
: 2.25V to 5.5V, V
OUT(MIN)
= 0.6V, I
Q
= 75µA,
I
SD
< 1µA, 3mm × 5mm QFN-24 Package
LTC3601 15V, 1.5A (I
OUT
), Synchronous Step-Down DC/DC Converter 95% Efficiency, V
IN
: 4.5V to 15V, V
OUT(MIN)
= 0.6V, I
Q
= 300µA,
I
SD
< 1µA, MSOP-16E and 3mm × 3mm QFN-16 Packages
LTC3603 15V, 2.5A, Synchronous Step-Down DC/DC Converter 92% Efficiency, V
IN
: 4.5V to 15V, V
OUT(MIN)
= 0.6V, I
Q
= 75µA, I
SD
< 1µA,
4mm × 4mm QFN-16 Package
LTC3605 15V, 5A (I
OUT
), Synchronous Step-Down DC/DC Converter 95% Efficiency, V
IN
: 4V to 15V, V
OUT(MIN)
= 0.6V, I
Q
= 2mA, I
SD
< 15µA,
4mm × 4mm QFN-24 Package
LTC3412A 5.5V, 3A (I
OUT
), 4MHz, Synchronous Step-Down
DC/DC Converter
95% Efficiency, V
IN
: 2.25V to 5.5V, V
OUT(MIN)
= 0.8V, I
Q
= 60µA,
I
SD
< 1µA, TSSOP-16E and 4mm × 4mm QFN-16 Packages
LTC3413 5.5V, 3A (I
OUT
Sink/Source), 2MHz, Monolithic Synchronous
Regulator for DDR/QDR Memory Termination
90% Efficiency, V
IN
: 2.25V to 5.5V, V
OUT(MIN)
= V
REF
/2, I
Q
= 280µA,
I
SD
< 1µA, TSSOP-16E Package
RUN
TRACK/SS
RT/SYNC
PGOODPGOOD
SGND
PGND
V
IN
3.3V
V
DD
1.8V
PV
IN_DRV
DDR
SV
IN
LTC3612
SW
PV
IN
L1
1µH
R1
200k
C3
22pF
R2
200k
3612 TA04a
MODE V
FB
C4
100µF
C5
47µF
C
C1
10pF
C2
22µF
C1
22µF
C
C
2.2nF
V
TT
0.9V
±1.5A
R3
100k
R8
365k
R5
1M
L1: COILCRAFT DO3316T
R4
1M
R
C
6k
R7
187k
R6
562k
ITH
500mV/DIV
500µs/DIV
3612 TA04b
V
DD
V
TT
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LTC3612EUDC#PBF

Mfr. #:
Buy LTC3612EUDC#PBF
Manufacturer:
Analog Devices / Linear Technology
Description:
Switching Voltage Regulators 3A, 4MHz, Monolithic Synchronous Step-Down Regulator
Lifecycle:
New from this manufacturer.
Delivery:
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