SC1175_04 Datasheet, PDF (22/23 Pages) Semtech Corporation – Low Power Dual Synchronous DC/DC Controller With Current Sharing Circuitry

POWER MANAGEMENT
Outline Drawing - TSSOP-20
A
N
2X E/2
PIN 1
INDICATOR
ccc C 1 2 3
2X N/2 TIPS
e
D
E1 E
e/2
B
aaa C
SEATING
PLANE _C
D
A2 A
A1
bxN
bbb C A-B D
DIMENSIONS
DIM
INCHES
MIN NOM MAX
MILLIMETERS
MIN NOM MAX
A-
- .047 -
- 1.20
A1 .002 - .006 0.05 - 0.15
A2 .031 - .042 0.80 - 1.05
b .007 - .012 0.19 - 0.30
c .003 - .007 0.09 - 0.20
D .251 .255 .259 6.40 6.50 6.60
E1 .169 .173 .177 4.30 4.40 4.50
E
.252 BSC
6.40 BSC
e
.026 BSC
0.65 BSC
L .018 .024 .030 0.45 0.60 0.75
L1
(.039)
(1.0)
N
20
20
01 0° - 8° 0° - 8°
aaa
.004
0.10
bbb
.004
0.10
ccc
.008
0.20
H
GAGE
c
PLANE
SIDE VIEW
0.25
SEE DETAIL A
L
(L1)
01
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 MO-153, VARIATION AC.
Land Pattern - TSSOP-20
SC1175
X
(C)
P
GZ
Y
DIM
C
G
P
X
Y
Z
DIMENSIONS
INCHES MILLIMETERS
(.222)
(5.65)
.161
4.10
.026
0.65
.016
0.40
.061
1.55
.283
7.20
NOTES:
1. THIS LAND PATTERN IS FOR REFERENCE PURPOSES ONLY.
CONSULT YOUR MANUFACTURING GROUP TO ENSURE YOUR
COMPANY'S MANUFACTURING GUIDELINES ARE MET.
 2004 Semtech Corp.
22
www.semtech.com