LM3533 Datasheet, PDF(44/53 Page) Texas Instruments – Complete Lighting Power Solution for Smartphone Handsets

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LM3533 Datasheet, PDF (44/53 Pages) Texas Instruments – Complete Lighting Power Solution for Smartphone Handsets

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LM3533

TABLE 39. PATTERN GENERATOR HIGH-TIME REGISTER BIT DESCRIPTION

Bit 7

Not Used

Bit [6:0]

tHIGH times

0x00 = 16.384ms (16.384ms/step) (Default)

0x01 = 32.768ms

0x3B = 983.05ms

0x3C = 999.424ms

0x3D = 1130.496ms (131.072ms/step)

0x3E = 1261.568ms

0x7F = 9781.248ms

TABLE 40. PATTERN GENERATOR LOW-LEVEL BRIGHTNESS REGISTERS (ADDRESS 0x73, 0x83, 0x93, 0xA3)

Address

0x73

0x83

0x93

0xA3

Function

Pattern Generator 1 Low-Level Brightness Register (BREGCL)

Pattern Generator 2 Low-Level Brightness Register (BREGDL)

Pattern Generator 3 Low-Level Brightness Register (BREGEL)

Pattern Generator 4 Low-Level Brightness Register (BREGFL)

For Exponential Mapping Mode the low-level current becomes:

For Linear Mapping Mode the low-level current becomes:

Note: The Pattern Generator high level brightness setting is set through the Control Bank Brightness Registers (see Table 28).

TABLE 41. PATTERN GENERATOR RISE-TIME REGISTERS (ADDRESS 0x74, 0x84, 0x94, 0xA4)

Address

0x74

0x84

0x94

0xA4

Function

Pattern Generator 1 Rise-Time Register

Pattern Generator 2 Rise-Time Register

Pattern Generator 3 Rise-Time Register

Pattern Generator 4 Rise-TimeRegister

Bits [7:3]

Not Used

TABLE 42. PATTERN GENERATOR RISE-TIME REGISTER BIT SETTINGS

000 = 2048Âµs (Default)

001 = 262ms

010 = 524ms

011 = 1.049s

100 = 2.097s

101 = 4.194s

110 = 8.389s

111 = 16.78s

Bits [2:0]

tRISE (from ILOW to IHIGH)

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