MAX8831 MAXIM [Maxim Integrated Products], MAX8831 Datasheet - Page 21

• Manufacturer Part Number: MAX8831
• Description: High-Efficiency, White LED Step-Up Converter with I2C Interface in 2mm x 2mm WLP
• Manufacturer: MAXIM [Maxim Integrated Products]

Table 4. ON/OFF_CNTL Register (Address 0x00)
Table 5. LED#_RAMP_CNTL Registers (Addresses: 0x03, 0x04, 0x05, 0x06, 0x07)
#Indicates the selected LED current regulator (1, 2, 3, 4, or 5).
B7 (MSB)
B7 (MSB)
B0 (LSB)
BIT
B6
B5
B4
B3
High-Efficiency, White LED Step-Up Converter
BIT
B6
B5
B4
B3
B2
B1
LED5_EN
LED4_EN
NAME
—
—
—
______________________________________________________________________________________
LED#_RAMP_DOWN [2:0]
with I
LED#_RAMP_UP [2:0]
Reserved for future use
Reserved for future use
Reserved for future use
0 = Disable LED5 current regulator
1 = Enable LED5 current regulator
0 = Disable LED4 current regulator
1 = Enable LED4 current regulator
NAME
—
—
DESCRIPTION
2
C Interface in 2mm x 2mm WLP
Reserved for future use
Reserved for future use
Programs LED# current ramp-down rate using bits [5:3] as follows:
000
001
010
010
100
101
110
111
Sets LED# current ramp-up rate using bits [2:0] as follows:
000
001
010
010
100
101
110
111
B0 (LSB)
64ms
128ms
256ms
512ms
1024ms
2048ms
4096ms
8192ms
64ms
128ms
256ms
512ms
1024ms
2048ms
4096ms
8192ms
BIT
B2
B1
LED3_EN
LED2_EN
LED1_EN
NAME
DESCRIPTION
0 = Disable LED3 current regulator
1 = Enable LED3 current regulator
0 = Disable LED2 current regulator
1 = Enable LED2 current regulator
0 = Disable LED1 current regulator
1 = Enable LED1 current regulator
DESCRIPTION
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