Datasheet

LM3533 Graphical User Interface

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Table 17. Bank C/D/E/F High Brightness (0x42, 0x43, 0x44, 0x45)

Brightness Code

Bits[7:0}

When the Mapping Mode is set for exponential mapping (Control Bank_Brightness Configuration Register Bit [2] = 0), the current

approximates the equation:

(3)

When the Mapping Mode is set for linear mapping (Control Bank_Brightness Configuration Register Bit [2] = 1), the current

approximates the equation:

(4)

Table 18. Bank (C/D/E/F) Full Scale Current (0x21,

0x22, 0x23, 0x24)

Bits [4:0]

Full-Scale Current (800µA per setting)

00000 = 5mA

10011 = 20.2mA (Default)

11111 = 29.8mA

Table 19. Bank (C/D/E/F) PWM Configuration (0x16, 0x17, 0x18, 0x19)

Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0

Zone 4 Zone 3 Zone 2 Zone 1 Zone 0 PWM Enabled

0 = PWM input is 0 = PWM input is 0 = PWM input is 0 = PWM input is 0 = PWM input is 0 = PWM Input is

disabled in Zone 4 disabled in Zone 3 disabled in Zone disabled in Zone disabled in Zone 0 disabled (Default)

2 1 (Default) (Default)

1 = PWM input is 1 = PWM input is 1 = PWM input is 1 = PWM input is 1 = PWM input is 1 = PWM Input is

enabled in Zone 4 enabled in Zone 3 enabled in Zone 2 enabled in Zone 1 enabled in Zone 0 enabled

(Default) (Default) (Default)

The PGEN Enable field in the low voltage control bank tabs is mirrored for each tab. Once a check box is

selected, the Enable Selected Patterns button must be pushed to write the specific bit to register 0x28. A

checked box means a 1 is being written and an empty box means a 0 is bing written.

Table 20. PGEN Enable (0X28, Bits[0, 2, 4, 6])

Bit 6 Bit 4 Bit 2 Bit 0

Pattern 4 Pattern 3 Pattern 2 Pattern 1

Enable Enable Enable Enable

0 = Pattern 4 Disabled (Default) 0 = Pattern 3 Disabled 0 = Pattern 2 Disabled 0 = Pattern 1 Disabled (Default)

(Default) (Default)

1 = Pattern 4 Enabled 1 = Pattern 3 Enabled 1 = Pattern 2 Enabled 1 = Pattern 1 Enabled

AN-2250 LM3533 Evaluation Kit SLOA172B–June 2012–Revised April 2013

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