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AS1170 Datasheet(PDF) 41 Page - ams-OSRAM AG

Part # AS1170
Description  AS1170 High current LED/VCSEL driver
PDF  53 Pages
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Manufacturer  AMSOSRAM [ams-OSRAM AG]
Direct Link  https://ams-osram.com/
Logo AMSOSRAM - ams-OSRAM AG

AS1170 Datasheet(HTML) 41 Page - ams-OSRAM AG

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AS1170
Register description
Datasheet
• PUBLIC • Document Feedback
DS001083
• v2-00 • 2024-Feb-05
41 / 53
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Addr: 8
Fault register
Bit
Bit name
Default
Access
Bit description
Value
Description
0
No fault.
1
Junction temperature limit has been exceeded.
6
fault_led_short
0
R/sC(2)
See Short Circuit Protection.
Value
Description
0
No fault.
1
A shorted LED is detected (pin LED_OUT1/2).
7
fault_ovp
0
R/sC(2)
See Overvoltage Protection.
Value
Description
0
No fault.
1
An overvoltage condition is detected (pin VOUT).
(1) This register identifies all the different fault conditions and provide information about the LED detection.
(2) R/sC = Read, self clear; after readout the register is automatically cleared.
8.9
PWM and indicator register
Table 15: PWM and indicator register
Addr: 9
PWM and indicator register
Bit
Bit name
Default
Access
Bit description
1:0
inct_pwm
00
R/W
Define the AS1170 PWM with 31.25 kHz operation for
indicator or low current mode (mode_setting=01).
Value
Description
00
1/16 duty cycle
01
2/16 duty cycle
10
3/16 duty cycle
11
4/16 duty cycle
2
freq_switch_on
0
R/W
Exact frequency switching between 4 MHz/1 MHz for
assist and flash modes for operation close to maximum
pulse width.
Value
Description
0
Pulseskip operation is allowed for all modes -
results in better efficiency.



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