LM3555TLE Datasheet, PDF (21/33 Pages) Texas Instruments – LM3555 Synchronous Boost Converter with 500 mA High Side LED Driver and Dual-Mode Control Interface

LM3555
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FC3
FC2
0
1
0
1
0
1
0
1
1
0
1
0
1
0
1
0
1
1
1
1
1
1
1
1
ASSIST LIGHT CURRENT LEVELS
AC2
0
0
0
0
1
1
1
1
AC1
0
0
1
1
0
0
1
1
SNVS594E – JANUARY 2009 – REVISED NOVEMBER 2011
FC1
FC0
0
0
0
1
1
0
1
1
0
0
0
1
1
0
1
1
0
0
0
1
1
0
1
1
Flash Current Level
280 mA
300 mA
320 mA (2 LEDs)
340 mA
360 mA
380 mA
400 mA (2 LED Max)
420 mA
440 mA
460 mA
480 mA
500 mA (1LED)
AC0
0
1
0
1
0
1
0
1
Assist Current Level
60 mA
60 mA (2 LEDs)
60 mA
80 mA (1 LED)
100 mA
120 mA
140 mA
160 mA
Control Register
Address: 0x04
Definition: IL1 IL0 SSU TEN OEN SEN OM1 OM0
Default: 1 0 1 1 0 1 0 0
IL1-IL0: Peak Inductor Current Limit Bits
SSU: Strobe Signal Usage. ‘0’ = Edge Sensitive, ‘1’ = Level Sensitive. ‘1’ = Default
TEN: External Torch Mode Enable. ‘0’ = Not allowed, ‘1’ = Allowed. ‘1’ = Default
OEN: Output Enable. ‘0’ = Output Disabled, ‘1’ = Output Enabled. ‘0’ = Default
SEN: Strobe Signal Mode. ‘0’ = Disabled, ‘1’ = Enabled. ‘1’ = Default
OM1-OM0: Output Mode Select Bits.
PEAK INDUCTOR CURRENT LIMIT LEVELS
IL1
IL0
0
0
0
1
1
0
1
1
OUTPUT MODES
OM1
0
0
1
1
OM0
0
1
0
1
Peak Inductor Current Limit
1.25A
1.50A
1.75A
2.00A
Output Mode
External Torch
Indicator
Assist Light
Flash
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