AAT1401 Datasheet, PDF (15/19 Pages) List of Unclassifed Manufacturers – FOUR-CHANNEL DIGITAL STILL CAMERA POWER SUPPLY

DATA SHEET
AAT1401
Serial LED Driver with Filtered PWM and 32-Step S2C Dimming Control
Schematic and Layout
J1
DC+
DC-
AAT1401
White LED
Driver
L1 10µH
CIN
4.7µF
VIN
PWM
VIN
R3
51k
CCOM
56nF
RSET
15k
U1
AAT1401IUQ
A 2 _IN
A3
B3
EN/SET
PWM
C3
D2
COMP
RSET
C1 _GND
B1 _PGND
LX ^{A 1}
OVP ^D3
CS ^D1
DS1
SDM20U40
R1
J2
1M
R2
D1
51k
D2
D3
D4
D6
D5
COUT
0.1μF/50V
UP
DOWN
CYCLE
V_MCU
R4
51k
EN/SET
S²C
R7 R8 R9
1k 1k 1k
PWM
S²Cwire/PWM
Microcontroller
U2 PIC12F675
1
VDD
VSS
2
GP5
GP0
3
GP4
GP1
4
GP3
GP2
8
7
6
R6 51k
5
VMCU
321
J3
C1
0.1µF
R5
1k
LED1
Red
Figure 6: AAT1401 Evaluation Board Schematic.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [e-mail] • www.skyworksinc.com
202113A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • June 27, 2012
15