LM3535TMXSLASHNOPB datasheet(18/36 Pages) TI2

18 / 36 page

MSB

LSB

Zone Brightnes Registers

bit7

bit6

bit5

bit4

bit3

bit2

bit1

bit0

All Versions

0x70 = Zone 0 Brightness

0x71 = Zone 1 Brightness

0x72 = Zone 2 Brightness

0x73 = Zone 3 Brightness

0x74 = Zone 4 Brightness

LM3535

SNVS598B – AUGUST 2010 – REVISED MARCH 2018

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VTRIP-LOW (typ) = [Boundary Code × 3.874mV] + 4.45mV

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For boundary codes 2 to 255. Code 0 and Code1 are mapped to equal the Code2 value.

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Each zone line has approx. 5.5mV of hysteresis between the falling and rising ALS trip points.

•

Zone Boundary 0 is the line between ALS Zone 0 and Zone 1. Default Code = 0x33 or approximately 200 mV

•

Zone Boundary 1 is the line between ALS Zone 1 and Zone 2. Default Code = 0x66 or approximately 400 mV

•

Zone Boundary 2 is the line between ALS Zone 2 and Zone 3. Default Code = 0x99 or approximately 600 mV

•

Zone Boundary 3 is the line between ALS Zone 3 and Zone 4. Default Code = 0xCC or approximately 800

Figure 28. Zone Brightness Region Register Description

•

B7-B0: Sets the ALS Zone Brightness Code. B7 always = 1 (unused). Use the formula found in the BankA

Brightness Register Description (Figure 23) to set the desired target brightness. Default values can be

overwritten

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Zone0 Brightness Address = 0x70. Default = 0x99 (25) or 0.084 mA

•

Zone1 Brightness Address = 0x71. Default = 0xB6 (54) or 0.164 mA

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Zone2 Brightness Address = 0x72. Default = 0xCC (76) or 1.45 mA

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Zone3 Brightness Address = 0x73. Default = 0xE6 (102) or 6.17 mA

•

Zone4 Brightness Address = 0x74. Default = 0xFF (127) or 25 mA

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