FAN5903 Fairchild Semiconductor, FAN5903 Datasheet - Page 2

• Manufacturer Part Number: FAN5903
• Description: FAN5903 is a high-efficiency, low-noise, synchronous, step-down, DC-DC converter designed for powering 3G/3
• Manufacturer: Fairchild Semiconductor

© 2008 Fairchild Semiconductor Corporation
FAN5903 • Rev. 1.0.7
Physical Dimensions
Package drawings are provided as a service to customers considering Fairchild components. Drawings may change in any manner
without notice. Please note the revision and/or date on the drawing and contact a Fairchild Semiconductor representative to verify or
obtain the most recent revision. Package specifications do not expand the terms of Fairchild’s worldwide terms and conditions, specifically the
warranty therein, which covers Fairchild products.
Always visit Fairchild Semiconductor’s online packaging area for the most recent package drawings:
http://www.fairchildsemi.com/packaging/.
FAN5903UCX
INDEX AREA
Product
PIN A1
2X
0.05 C
0.40
0.03 C
0.40
C
BOTTOM VIEW
TOP VIEW
1 2 3
1.292 ± 0.030
E
SEATING PLANE
D
D
Figure 42. 1.34 x 1.29mm, 9-Bump, 0.4mm-Pitch WLCSP
C
A
B
(X)±0.018
A
Ø0.260±0.020
9X
(Y)±0.018
0.539
0.461
B
D
2X
F
1.342 ± 0.030
0.06 C
0.03 C
SIDE VIEWS
E
F
E
18
LAND PATTERN RECOMMENDATION
0.271
NOTES:
B. DIMENSIONS ARE IN MILLIMETERS.
D. DATUM C IS DEFINED BY THE SPHERICAL
E. PACKAGE NOMINAL HEIGHT IS 500 MICRONS
F. FOR DIMENSIONS D, E, X, AND Y SEE
A. NO JEDEC REGISTRATION APPLIES.
C. DIMENSIONS AND TOLERANCE
G. DRAWING FILNAME: MKT-UC009AErev1
0.40
X
0.40
(NSMD PAD TYPE)
PER ASMEY14.5M, 1994.
CROWNS OF THE BALLS.
±39 MICRONS (461-539 MICRONS).
PRODUCT DATASHEET.
A1
0.292±0.018
0.246
0.208±0.021
Y
Cu Pad
Ø0.30
Solder Mask
Ø0.20
www.fairchildsemi.com
Unit
mm