AS1181 datasheet(67/92 Pages) AMSOSRAM

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AS1181

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DS001139 • v3-00 • 2026-Apr-01

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8.3.24

HSCS_SEL register (Address 0x1A30)

Table 36: HSCS_SEL register (Write Access when config_mode ==1)

Addr: 0x1A30

HSCS_SEL

Bit

Bit field

Default

Access

Bit description

3:0

hs_currs_nr_chan

OTP

Range setting for High-side current sensing

Do not use

Sensing range 1: <100mA

Sensing range 2: 100mA to 300mA

Sensing range 3: 300mA to 400mA

Sensing range 4: 400mA to 600mA

Sensing range 5: 500mA to 700mA

Sensing range 6: 500mA to 900mA

Sensing range 7: 600mA to 1000mA

Sensing range 8: 700mA to 1000mA

Sensing range 9: 800mA to 1000mA

Sensing range 10: 900mA to 1000mA

5:4

Hs_currs_lp_pullup

OTP

Select LP pull-up current to compensate for parasitic

capacitance of LEDs in transition to illum.

Default LP pull-up current (~150µA)

LP pull-up current = 2x of default value

LP pull-up current = 3x of default value

LP pull-up current = 4x of default value

15:8

hs_set_iref

OTP

Reference current in 1µA Steps (do not use numbers below

12µA)

No reference Current --> This

setting always Trigger Fault when

high-side current sensing enabled

1 to 11

1µA to 11µA

Do not use

12µA

For sensing ~50mA

50µA

For sensing 200mA select this

setting

100

100µA

For sensing 400mA select this

setting

195

195µA

For sensing 780mA select this

setting

250

250µA

For sensing 1A select this setting

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