UM3502QA Datasheet, PDF (11/13 Pages) Union Semiconductor, Inc. – Low-Profile, 600mA, Synchronous Step-Down Converter with Integrated Inductor

UM3502QA
Package Information
UM3502QA: QFN24 4.0×4.0
Outline Drawing
D
DIMENSIONS
Symbol
MILLIMETERS
Min
Typ
Max
Pin #1 ID
A
1.00
A1
0.00
1.05
1.10
0.02
0.05
A3
0.152REF
b
0.20
0.25
0.30
D
3.90
4.00
4.10
E
3.90
4.00
4.10
D1
0.40
0.50
0.60
E1
0.25
0.35
0.45
D2
0.75
0.85
0.95
Top View
E2
1.92
D3
1.37
2.02
2.12
1.47
1.57
E3
0.45
0.55
0.65
K1
N24
D4
1.37
1.47
1.57
D1
M3
D2
K3
D5
H
1 N1
D6
M4
D3
E4
0.67
D5
0.84
E5
0.25
D6
0.10
E6
0.25
0.77
0.87
0.94
1.04
0.35
0.45
0.20
0.30
0.35
0.45
e
0.40
0.50
0.60
N13
b
D4
M
N7
e
H
0.125REF
H1
0.25REF
K
0.20
0.30
0.40
K1
0.25
0.35
0.45
K2
0.25
0.35
0.45
Bottom View
K3
0.25
L
0.25
0.35
0.45
0.30
0.35
M
0.28
0.38
0.48
M1
0.60
0.70
0.80
M2
0.28
0.38
0.48
Side View
M3
0.53
M4
0.33
0.63
0.73
0.43
0.53
Land Pattern
4.00
0.30
0.50
Keep Out Area
4.60
NOTES:
1. Compound dimension: 4.00×4.00;
2. Unit: mm;
3. General tolerance ±0.05mm unless otherwise
specified;
4. The layout is just for reference.
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http://www.union-ic.com Rev.01 Nov.2015
11/13