LM3561 Datasheet, PDF (29/36 Pages) Texas Instruments – LM3561 Synchronous Boost Converter with 600mA High Side LED Driver and I 2 C-Compatible Interface

CONFIGURATION REGISTER 2 (ADDRESS 0XF0)
Configuration Register 2 contains the TX2 shutdown bit, the NTC shutdown bit, the Alternate External Torch Enable bit, and the
VIN Monitor Shutdown bit.
Bits [7:4]
Not Used
N/A
TABLE 11. Configuration Register 2 Bit Settings
Bit 3
V_IN Monitor
Shutdown
Bit 2
AET mode
Bit 1
NTC
Shutdown
Bit 0
TX2 Shutdown
0 = If IN drops 0 = Normal 0 = LEDI/NTC 0 = TX2
below V_{IN_TH}
and the VIN
Monitor
operation for
TX1/TORCH
high before
pin going
below V_TRIP
forces the
interrupt event
forces the
flash LED into
feature is
STROBE (TX1 LEDs into
Torch mode
enabled, the mode only) Torch mode (TX2 mode
LEDs are
default
(NTC mode only) default
forced into 1 = Alternate only) default 1 = TX2
Torch mode External Torch 1 = LEDI/NTC interrupt event
(default)
Mode. TX1/ pin going
forces the
1 = If IN drops TORCH high
below V_{IN_TH} before
and the VIN ^STROBE
below V_TRIP
forces the
LEDs into
flash LED into
shutdown
(TX2 mode
Monitor
forces Torch _shutdown
only)
feature is
mode with no _{(NTC mode}
enabled, the ^{timeout (TX1} only)
LEDs turn off ^{mode only)}
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