LM3561TMX National Semiconductor Corporation, LM3561TMX Datasheet - Page 28

• Manufacturer Part Number: LM3561TMX
• Description: Synchronous Boost Converter With 600ma High Side Led Driver And I2c-compatible Interface
• Manufacturer: National Semiconductor Corporation

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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
28
Bit 3
V
Shutdown
0 = If IN drops
below V
and the VIN
Monitor
feature is
enabled, the
LEDs are
forced into
Torch mode
(default)
1 = If IN drops
below V
and the VIN
Monitor
feature is
enabled, the
LEDs turn off
IN
Monitor
IN_TH
IN_TH
Bit 2
AET mode
0 = Normal
operation for
TX1/TORCH
high before
STROBE (TX1
mode only)
default
1 = Alternate
External Torch
Mode. TX1/
TORCH high
before
STROBE
forces Torch
mode with no
timeout (TX1
mode only)
Bit 1
NTC
Shutdown
0 = LEDI/NTC
pin going
below V
forces the
LEDs into
Torch mode
(NTC mode
only) default
1 = LEDI/NTC
pin going
below V
forces the
LEDs into
shutdown
(NTC mode
only)
TRIP
TRIP
Bit 0
TX2 Shutdown
0 = TX2
interrupt event
forces the
flash LED into
Torch mode
(TX2 mode
only) default
1 = TX2
interrupt event
forces the
flash LED into
shutdown
(TX2 mode
only)