SC4520 Datasheet, PDF (12/12 Pages) Semtech Corporation – 3A Step-Down Switching Regulator with Adjustable Switching Frequency

POWER MANAGEMENT
Outline Drawing - SOIC-8L EDP
A
N
2X E/2
e
D
E1 E
12
ccc C
2X N/2 TIPS
e/2
B
aaa C
SEATING
PLANE
C
D
A2 _A
A1
bxN
bbb C A-B D
F
EXPOSED PAD
DIMENSIONS
DIM
INCHES
MIN NOM MAX
MILLIMETERS
MIN NOM MAX
A .053 - .069 1.35 - 1.75
A1 .000 - .005 0.00 - 0.13
A2 .049 - .065 1.25 - 1.65
b .012 - .020 0.31 - 0.51
c .007 - .010 0.17 - 0.25
D .189 .193 .197 4.80 4.90 5.00
E1 .150 .154 .157 3.80 3.90 4.00
E
.236 BSC
6.00 BSC
e
.050 BSC
1.27 BSC
F .116 .120 .130 2.95 3.05 3.30
H .085 .095 .099 2.15 2.41 2.51
h .010 - .020 0.25 - 0.50
L .016 .028 .041 0.40 0.72 1.04
L1
(.041)
(1.05)
N
8
8
01 0° - 8° 0° - 8°
aaa
.004
0.10
bbb
.010
0.25
ccc
.008
0.20
h
h
H
H
GAGE
c
PLANE
0.25
L
(L1)
01
SIDE VIEW
SEE DETAIL A
DETAIL A
NOTES:
1. CONTROLLING DIMENSIONS ARE IN MILLIMETERS (ANGLES IN DEGREES).
2. DATUMS -A- AND -B- TO BE DETERMINED AT DATUM PLANE -H-
3. DIMENSIONS "E1" AND "D" DO NOT INCLUDE MOLD FLASH, PROTRUSIONS
OR GATE BURRS.
4. REFERENCE JEDEC STD MS-012, VARIATION BA.
Land Pattern - SOIC-8L EDP
Contact Information
E
D
(C) _F
THERMAL VIA
P
Ø 0.36mm
SOLDER MASK
GZ
Y
X
DIM
C
D
E
F
G
P
X
Y
Z
DIMENSIONS
INCHES MILLIMETERS
(.205)
(5.20)
.134
3.40
.201
5.10
.101
2.56
.118
3.00
.050
1.27
.024
0.60
.087
2.20
.291
7.40
NOTES:
1. THIS LAND PATTERN IS FOR REFERENCE PURPOSES ONLY.
CONSULT YOUR MANUFACTURING GROUP TO ENSURE YOUR
COMPANY'S MANUFACTURING GUIDELINES ARE MET.
2. REFERENCE IPC-SM-782A, RLP NO. 300A.
3. THERMAL VIAS IN THE LAND PATTERN OF THE EXPOSED PAD
SHALL BE CONNECTED TO A SYSTEM GROUND PLANE.
FAILURE TO DO SO MAY COMPROMISE THE THERMAL AND/OR
FUNCTIONAL PERFORMANCE OF THE DEVICE.
 2006 Semtech Corp.
Semtech Corporation
Power Management Products Division
200 Flynn Road, Camarillo, CA 93012
Phone: [phone] FAX [phone]
12
SC4520
www.semtech.com