Datasheet

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LM3533 Graphical User Interface

Table 5. Run Time Ramp (0x13)

Bits [5:3] Bits [2:0]

Transition Time Ramp Up Transition Time Ramp Down

000 = 2048µs (Default) 000 = 2048µs (Default)

001 = 262ms 001 = 262ms

010 = 524ms 010 = 524ms

011 = 1.049s 011 = 1.049s

100 =2.097s 100 =2.097s

101 = 4.194s 101 = 4.194s

110 = 8.389s 110 = 8.389s

111 = 16.78s 111 = 16.78s

Table 6. Control Bank Enable (0x27)

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

Control F Select Control E Select Control D Select Control C Select Control B Select Control A Select

0 = Control Bank F 0 = Control Bank E 0 = Control Bank D 0 = Control Bank C 0 = Control Bank B 0 = Control Bank A is

is disabled is disabled is disabled is disabled is disabled (Default) disabled (Default)

(Default) (Default) (Default) (Default)

1 = Control Bank F 1 = Control Bank E 1 = Control Bank D 1 = Control Bank C 1 = Control Bank B 1 = Control Bank A is

is enabled is enabled is enabled is enabled is enabled enabled

Table 7. Anode Connect (0x25)

Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0

LVLED5 Anode LVLED4 Anode LVLED3 Anode LVLED2 Anode LVLED1 Anode HVLED2 HVLED1

Connect Connect Connect Connect Connect Anode Anode

Connect Connect

0 = LVLED5 LED 0 = LVLED4 LED 0 = LVLED3 LED 0 = LVLED2 0 = LVLED1 LED 0 = HVLED2 0 = HVLED1

anode is not anode is not anode is not LED anode is anode is not LED string LED string

connected to connected to connected to not connected to connected to anode is not anode is not

CPOUT CPOUT CPOUT CPOUT CPOUT connected to connected to

COUT COUT

1 = LVLED5 LED 1 = LVLED4 LED 1 = LVLED3 LED 1 = LVLED2 1 = LVLED1 LED 1 = HVLED2 1 = HVLED1

anode is anode is anode is LED anode is anode is LED string LED string

connected to connected to connected to connected to connected to anode is anode is

CPOUT (Default) CPOUT (Default) CPOUT (Default) CPOUT CPOUT (Default) connected to connected to

(Default) COUT COUT

(Default) (Default)

Table 8. OVP/Boost Frequency/PWM Polarity (0x2C)

Bit 3 Bit [2:1] Bit 1

PWM Polarity Boost OVP Select Boost Frequency Select

0 = Active Low Polarity 00 = 16V (Default) 0 = 500 kHz (Default)

1 = Active High Polarity (Default) 01 = 24V 1 = 1MHz

10 = 32V

11 = 40V

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

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