AAT4282B Datasheet, PDF (11/13 Pages) Skyworks Solutions Inc. – Slew Rate Controlled Load Switch

Printed Circuit Board
Layout Recommendations
For proper thermal management, and to take advantage
of the low R_DS(ON) of the AAT4282B, a few circuit board
layout rules should be followed: V_IN and V_OUT should be
routed using wider than normal traces, and GND should
be connected to a ground plane. For best performance,
C_IN and C_OUT should be placed close to the package pins.
DATA SHEET
AAT4282B
Slew Rate Controlled Load Switch
Evaluation Board Layout
The AAT4282B evaluation layout follows the printed cir-
cuit board layout recommendations and can be used for
good applications layout. Refer to Figures 1 and Firgure
2.
Note: Board layout shown is not to scale.
INA
(1.5V - 6.5V)
C1
1µF
INB
(1.5V - 6.5V)
C2
1µF
JP1
1
2
U1
1 _INA
FAST/SLOW ₃
OUTA ⁸
4
2 ⁷ _FAST
1
ENA ₃
2
ENB ₃
1
2
1
4 _{INB OUTB} 5
2 _ENA
3 _ENB
6
GND
AAT4282BIPS
TDFN22-8
C3
0.1µF
OUTA
C4
0.1µF
OUTB
C1, C2 1µF 0603 X5R 10V (P/N: GRM188R61A105KA61D)
C3, C4 0.1µF 0603 X5R 10V (P/N: GRM188R71C104KA01D)
Figure 1: AAT4282BIPS Evaluation Board Schematic.
(a) Top Side
(b) Bottom Side
Figure 2: AAT4282BIPS Evaluation Board Layout.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [e-mail] • www.skyworksinc.com
201859B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • May 14, 2012
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