LTC3613 Datasheet, PDF (34/36 Pages) Linear Technology – 24V, 15A Monolithic Step Down Regulator

LTC3613
PACKAGE DESCRIPTION
Please refer to http://www.linear.com/designtools/packaging/ for the most recent package drawings.
7.00
BSC
3
PAD 1
CORNER
WKH Package
56-Lead QFN Multipad (7mm × 9mm)
(Reference LTC DWG # 05-08-1870 Rev Ø)
SEATING PLANE
A
0.00 – 0.05
B
2.63 REF
45
44
2.90 REF
0.50 BSC ₅₆
PIN 1 ID
1
4
4.76 ± 0.10
3.15 ± 0.10
1.97
± 0.10
3.82 REF
4.06 ± 0.10
PIN 1
aaa C 2x
TOP VIEW
6
7.50 ± 0.05
2.90 REF
2.63 REF
0.50 BSC
3.82 REF
4.06 ± 0.05
1.97
± 0.05
3.15 ± 0.05
1.50 REF
9.00
BSC
NX b
0.90 ± 0.10
// ccc C
NX
0.08 C
5
0.95
REF
1.50 REF
12
2.25 ± 0.10
29
0.58 ± 0.05
28
4.27 ± 0.10
16
19 17
0.40 ± 0.05
1.35
1.78
± 0.05
REF
0.25 ± 0.05
BOTTOM VIEW
(BOTTOM METALLIZATION DETAILS)
MLP56 QFN REV Ø 0310
3.82 REF
4.76 ± 0.05
9.50 ± 0.05
NOTE:
1. DIMENSIONING AND TOLERANCING CONFORM TO ASME Y14.5M-1994
2. ALL DIMENSIONS ARE IN MILLIMETERS, ANGLES ARE IN DEGREES (°)
3 THE LOCATION OF THE TERMINAL #1 IDENTIFIER AND TERMINAL NUMBERING
CONVENTION CONFORMS TO JEDEC PUBLICATION 95 SPP-002
4 DIMENSION b APPLIES TO METALLIZED TERMINAL AND IS MEASURED
BETWEEN 0.20mm AND 0.30mm FROM THE TERMINAL TIP. IF THE TERMINAL
HAS THE OPTIONAL RADIUS ON THE OTHER END OF THE TERMINAL, THE
DIMENSION b SHOULD NOT BE MEASURED IN THAT RADIUS AREA.
5 COPLANARITY APPLIES TO THE TERMINALS AND ALL OTHER SURFACE
METALLIZATION
6 DRAWING SHOWN ARE FOR ILLUSTRATION ONLY
2.25 ± 0.05
4.27 ± 0.05
0.40 ± 0.05
0.25 ± 0.05
1.78
1.35
REF
± 0.05
RECOMMENDED SOLDER PAD LAYOUT
TOP VIEW
PACKAGE
OUTLINE
SYMBOL
aaa
bbb
ccc
TOLERANCE
0.15
0.10
0.10
3613fa
34