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LM3648, LM3648TT

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SNVSA68D – OCTOBER 2014 – REVISED NOVEMBER 2016

Product Folder Links: LM3648 LM3648TT

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Copyright © 2014–2016, Texas Instruments Incorporated

7.6.8 Flags1 Register (0x0A)

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

TX Flag

VOUT Short

Fault

VLED Short

Fault

VLED Short

Fault

Current Limit

Flag

Thermal

Shutdown

(TSD) Fault

UVLO Fault

Flash Time-Out

Flag

7.6.9 Flags2 Register (0x0B)

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

RFU

RFU

RFU

NTC Short

Fault

NTC Open Fault

IVFM Trip

Flag

OVP Fault

TEMP Trip

Fault

7.6.10 Device ID Register (0x0C)

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

RFU

RFU

Device ID

'000'

Silicon Revision Bits

'010' or '100' for LM3648TT

7.6.11 Last Flash Register (0x0D)

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

RFU

The value stored is always the last current value the IVFM detection block set. ILED = IFLASH-TARGET × ((Code + 1) / 128)