Datasheet

LM3533 Graphical User Interface

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Table 13. Bank A or Bank B Full Scale Current (0x1F,

0x20)

Bits [4:0]

Full-Scale Current (800µA per setting)

00000 = 5mA

10011 = 20.2mA (Default)

11111 = 29.8mA

Table 14. Bank B Configuration (0x1A, Bits[3:2])

Bit 3 Bit 2

Control Bank B Mapping Mode BREGB/ALSM2 Control

0 = Exponential Mapping (Default) 0 = Control Bank B is configured for Brightness Register Current

Control (Default)

1 = Linear Mapping 1 = Control Bank B is configured for ALS current control via the

ALSM2 Zone Target Registers

Table 15. Bank A and Bank B Brightness (0x40, 0x41)

Brightness Code

Bits[7:0}

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

approximates the equation:

(1)

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

approximates the equation:

(2)

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

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