LM3555TLXSLASHNOPB datasheet(26/37 Pages) TI2

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OVP SC OTP TO DN

IP RFU

Default:

Definition:

IL1

IL0 SSU TEN OEN SEN OM1 OM0

Default:

Definition:

LM3555

SNVS594G – DECEMBER 2008 – REVISED APRIL 2016

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Table 7. Assist Light Current Levels (continued)

AC2

AC1

AC0

ASSIST CURRENT LEVEL

100 mA

120 mA

140 mA

160 mA

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

Figure 48. Control Register, Address: 0x04

Table 8. Peak Inductor Current Limit Levels

IL1

IL0

PEAK INDUCTOR CURRENT LIMIT

1.25 A

1.5 A

1.75 A

2 A

Table 9. Output Modes

OM1

OM0

OUTPUT MODE

external torch

indicator

assist light

flash

OVP: overvoltage protection fault. 1 = fault, 0 = no fault

SC: short-circuit fault: 1 = Fault, 0 = no fault

OTP: overtemperature protection fault. 1 = fault, 0 = no fault

TO: flash timeout fault. 1 = fault, 0 = no fault

DN: number of LEDs. 1 = 2 LEDs, 0 = 1 LED. (This bit is R/W). 1 = fault, 0 = no fault

IF: indicator LED fault. 1 = fault, 0 = no fault

IP: inductor peak current limit fault (broken inductor fault). 1 = fault, 0 = no fault

RFU: not used

Figure 49. Fault and Info Register, Address: 0x05

LM3555TLX/NOPB Datasheet(PDF) 26 Page - Texas Instruments

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