FS26 datasheet(75/156 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

3 to 2

VPRE_PFM_TOFF_OTP[1:0]

VPRE high-side minimum off time in PFM

tPRE_OFF_MIN

720 ns

900 ns / 440 ns

1000 ns / 500 ns

1125 ns / 550 ns

1 to 0

VPRE_PFM_TON_OTP[1:0]

VPRE high-side minimum on time in PFM

tPRE_ON_MIN_450K / tPRE_ON_MIN_2M2

1250 ns / 600 ns

Table 79. OTP_VPRE_CFG4 register bit description...continued

Go to main OTP configuration map

17.2.12 OTP_VPRE_VOLT1

Bit

Bit Group Name

Description

Value

Settings

0Ah

3.70 V

0Bh

3.75 V

0Ch

3.80 V

0Dh

3.85 V

0Eh

3.90 V

0Fh

3.95 V

10h

4.00 V

11h

4.05 V

12h

4.10 V

13h

4.15 V

14h

4.20 V

15h

4.25 V

16h

4.30 V

17h

4.35 V

18h

4.40 V

19h

4.45 V

1Ah

4.50 V

1Bh

4.55 V

1Ch

4.60 V

1Dh

4.65 V

1Eh

4.70 V

1Fh

4.75 V

20h

4.80 V

21h

4.85 V

22h

4.90 V

23h

4.95 V

24h

5.00 V

25h

5.05 V

26h

5.10 V

27h

5.15 V

28h

5.20 V

29h

5.25 V

5 to 0

VPRE_OTP[5:0]

VPRE output voltage in normal mode

VPRE_PWM

2Ah

5.30 V

Table 80. OTP_VPRE_VOLT1 register bit description

FS26_SDS

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Product short data sheet

Rev. 6.0 — 12 December 2025

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