FS26 datasheet(73/156 Pages) NXP

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NXP Semiconductors

FS26

Safety system basis chip with low power for ASIL D/ASIL B

Bit

Bit Group Name

Description

Value

Settings

13h

12.5 V

14h

13.0 V

15h

13.5 V

16h

14.0 V

17h

14.5 V

18h

15.0 V

19h

15.5 V

1Ah

16.0 V

1Bh

16.5 V

1Ch

17.0 V

1Dh

17.5 V

1Eh

18.0 V

1Fh

18.0 V

Table 75. OTP_VBST_VOLT register bit description...continued

Go to main OTP configuration map

17.2.8 OTP_VPRE_CFG1

Bit

Bit Group Name

Description

Value

Settings

0.66 A

0.88 A

1.1 A

1.32 A

1.54 A

1.76 A

1.98 A

7 to 5

VPRE_OC_OTP[2:0]

VPRE overcurrent flag

IPRE_OC_FLAG

2.2 A

2 ns - Fast mode

VPRE_SR_OTP

VPRE LX slew rate

tPRESW_SLR

4 ns - Slow mode

No delay

1 clock cycle

2 clock cycles

3 to 2

VPRE_PH_OTP[1:0]

VPRE phase delay

3 clock cycles

269 µs

538 µs

1077 µs

1 to 0

VPRE_SS_OTP[1:0]

VPRE soft start

tPRE_SS

2150 µs

Table 76. OTP_VPRE_CFG1 register bit description

Go to main OTP configuration map

17.2.9 OTP_VPRE_CFG2

Bit

Bit Group Name

Description

Value

Settings

1300 kΩ

6 to 4

VPRE_RCOMP_OTP[2:0]

VPRE comp resistance

1137 kΩ

Table 77. OTP_VPRE_CFG2 register bit description

FS26_SDS

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Product short data sheet

Rev. 6.0 — 12 December 2025

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