MAX8821 MAXIM [Maxim Integrated Products], MAX8821 Datasheet - Page 26

• Manufacturer Part Number: MAX8821
• Description: White LED Charge Pump with Mono Class D Audio Amp and Dual LDO
• Manufacturer: MAXIM [Maxim Integrated Products]

White LED Charge Pump with Mono Class D
Audio Amp and Dual LDO
Table 14. LDO2_CNTL (Address 0x0C)
Note: Defaults in bold italics.
26
B7, B6
B3–B0
BIT
B5
B4
______________________________________________________________________________________
N/A, do not use.
LDO2_EN
LDO2_PD
LDO2[3:0]
NAME
CODE
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
0
1
0
1
LDO2 is disabled.
LDO2 is enabled.
Active pulldown enabled
during OFF condition.
Active pulldown disabled
during OFF condition.
DESCRIPTION
1.5V
1.6V
1.8V
2.0V
2.2V
2.3V
2.4V
2.5V
2.6V
2.7V
2.8V
2.9V
3.0V
3.1V
3.2V
3.3V
Table 15. AUDIO_CNTL (Address 0x0D)
Note: Defaults in bold italics.
B6, B5
B3–B0
BIT
B7
B4
AUDIO_GAIN[3:0]
CLK_CNTL[1:0]
AMP_EN
NAME
SYNC
CODE
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
00
01
10
11
0
1
0
1
Audio amplifier and
charge-pump
clocks are not
synchronized.
Audio amplifier and
charge-pump clocks
are synchronized.
Charge pump
oscillator clock =
audio clock / 2.
O s c illa t o r f r e q u e n c y
1 1 0 0 k H z, f ix e d -
f r e q u e n c y m o d e .
Oscillator frequency
1400kHz, fixed-
frequency mode.
Oscillator frequency
1250kHz, spread-
spectrum mode.
Reserved for future
use.
Class D amplifier is
disabled.
Class D amplifier is
enabled.
N/A, do not use.
N/A, do not use.
N/A, do not use.
N/A, do not use.
N/A, do not use.
N/A, do not use.
DESCRIPTION
12dB
15dB
18dB
21dB
24dB
-3dB
0dB
3dB
6dB
9dB