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AS1181 Datasheet(PDF) 47 Page - ams-OSRAM AG

Part # AS1181
Description  8-channel LED/VCSEL driver with enhanced safety features
PDF  92 Pages
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Manufacturer  AMSOSRAM [ams-OSRAM AG]
Direct Link  https://ams-osram.com/
Logo AMSOSRAM - ams-OSRAM AG

AS1181 Datasheet(HTML) 47 Page - ams-OSRAM AG

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AS1181
Register description
Datasheet • PUBLIC • Document Feedback
DS001139 • v3-00 • 2026-Apr-01
47 / 92
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Register name / bit name
Register
address
OTP default
value (HEX)
Value
Unit
Comment
CH_DLY / td_trigdly
0x1A24
64
100
µs
CH_DLY / td_stagger
0x1A24
1
1
µs
CH_ENABLE
0x1A26
FF
All channels enabled
LED_CONFIG
0x1A28
FF
2 LED configuration
CH_CONTROL
0x1B48
1
Channel Slew ON
CH_SLEW30
0x1A2C
1111
CH_SLEW74
0x1A2E
1111
HSCS_SEL / hs_curr_nr_chan
0x1A30
5
Sensing Range 500-700mA
HSCS_SEL / hs_set_iref
0x1A30
BE
190µA
TD_TRATE_MAX
0x1A34
1F4
TD_ILLUM_MAX
0x1A36
12C
300
µs
TST_INTERVAL
0x1A40
3FF
1
sec
Periodic test set to 1sec
COMP_LVL_LOW
0x1A48
0
200
mV
COMP_LVL_HIGH
0x1A4A
0
800
mV
COMP_LVL_SHORT
0x1A4C
3
0.8
V
COMP_LVL_OPEN
0x1A4E
0
50
mV
8.3
Register map details
8.3.1
TD_ILLUM register (Address 0x1A00)
Table 13: TD_ILLUM register (Write Access when system state == idle)
Addr: 0x1A00
TD_ILLUM
Bit
Bit field
Default
Access
Bit description
14:0
td_illum
OTP
RW
LED illumination duration defined in [µs].
LSB = 1µs
Note:
If pwm_illum_enable is high this field shows sampled illumination
time based on STROBE pin as a PWM source.
In PWM mode 0x7FFF sampled value means constant high
STROBE input and constant illumination.



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