AAT1282 Datasheet, PDF (14/22 Pages) Skyworks Solutions Inc. – 2A Driver for High Intensity LED Camera Flash

DATA SHEET
AAT1282
2A Driver for High Intensity LED Camera Flash
Device Register Information
To program the register through the I²C interface, the
master needs to send the AAT1282’s device address,
0x37 (Hex), first, and then sends an 8-bit register
address and 8-bit data. The AAT1282 has two registers,
Register 0 and Register 1. If no instruction is written to
the register, the default value is applied.
Register 0 (REG0), Register Address: 00h
Bits [7:4] Program the movie-mode current with 16 different percentage levels.
Bits [3:0] Program the flash safety timeout with 16 different fractions from the hardware configuration, CT.
MSB
LSB
7
6
5
4
3
2
1
0
Figure 6: AAT1282 Register 0 Programming.
Flash Safety
Timeout
0000 = 16/16(default)
0001 = 15/16
0010 = 14/16
0011 = 13/16
0100 = 12/16
0101 = 11/16
0110 = 10/16
0111 = 9/16
1000 = 8/16
1001 = 7/16
1010 = 6/16
1011 = 5/16
1100 = 4/16
1101 = 3/16
1110 = 2/16
1111 = 1/16
Movie Mode
Current
0000 = 100% (default)
0001 = 89.1%
0010 = 79.4%
0011 = 70.8%
0100 = 63.1%
0101 = 56.2%
0110 = 50.1%
0111 = 44.7%
1000 = 39.8%
1001 = 35.5%
1010 = 31.6%
1011 = 28.2%
1100 = 25.1%
1101 = 22.4%
1110 = 20%
1111 = 0%
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [e-mail] • www.skyworksinc.com
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202305C • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • March 20, 2013