AAT1274

1.5A Single Flash LED Driver IC

DATA SHEET

14

Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com

201981A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • May 21, 2012

C2

2.2μF

C1

2.2μF

R1

133k

D1

DC+

VOUT

0

JP1

VDD

1

GP5

2

GP4

3

GP3

4

GP2

5

GP1

6

GP0

7

VSS

8

U2

PIC12F675

C3

1μF

R4

100k

(opt)

R8

330

LED1

RED

1

2

3

4

5

0

SW4

FLINH

1

2

3

4

5

0

SW1

Movie Mode Control

R5

10K

LED2

GRN

R9

330

DC-

0

JP2

R2

100K

JP4

10k

R3

JP5

EN/SET

JP3

MCU

1

2

3

4

5

0

SW2

Flash Movie Mode

R6

10K

R7

10K

L1

CooperBussmann SD3812-1R0-R, 1μH, 2.69A, 48mΩ

C1, C2

Murata GRM188R71A225KE15 2.2μF, 0603, X7R, 10V

D1

Lumiled LXCL-PWF4 or equivalent

1uH

L1

AGND

5

AGND

1

IN

6

OUT

8

EN/SET

2

FL

3

PGND

7

FLEN

4

N/C

9

SW

10

FLINH

11

N/C

12

FLGND

13

RSET

14

U1

AAT1274 TDFN33-14

C4

220μF

1

2

3

4

5

0

SW3

FLEN

R10

100k

Figure 2: AAT1274 Evaluation Board Schematic.

Figure 3: AAT1274 Evaluation Board

Figure 4: AAT1274 Evaluation Board

Top Side Layout.

Bottom Side Layout.