FS26 datasheet(90/156 Pages) NXP

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NXP Semiconductors

FS26

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

TA = –40 °C to 125 °C, unless otherwise specified. VSUP_UVH < VSUP < 36 V, VPRE_PWM + VPRE_HDR < VSUP_PWR < 36 V, unless otherwise specified. All voltages

are referenced to ground.

Symbol

Description

Min

Typ

Max

Unit

VPRE_LINE_REG_2M2_PWM

Transient line in PWM mode with FPRE = 2.25 MHz

VBAT = 6 V - 18 V - 6 V and 14 V - 35 V - 14 V

IPRE_PWM = 0 A and 1.5 A for VPRE_PWM = 3.3 V

IPRE_PWM = 0 A and 0.6 A for VPRE_PWM = 5.0 V

dV/dt = 100 mV/µs, LPRE = 2.2 μH,

CIN_PRE = 47 µF + PI filter, COUT_PRE = 44 μF

-1.5

—

1.5

VPRE_LINE_REG_2M2_DO

Transient line after drop out exit FPRE = 2.25 MHz

VBAT = VPRE_PWM - 0.4 V to 14 V

IPRE_PWM = 0 A and 0.6 A for VPRE_PWM = 5.0 V

dV/dt = 100 mV/µs, LPRE = 2.2 μH,

CIN_PRE = 47 µF + PI filter, COUT_PRE = 44 μF

-3

—

VPRE_LOTR_2M2_PWM

Transient load response in PWM mode FPRE = 2.25 MHz

10 mA to 800 mA step and 800 mA to 10 mA step

800 mA to 1.5 A step and 1.5 A to 800 mA step

di/dt = 300 mA/µs, COUT_PRE ≥ 22 µF, LPRE = 2.2 µH

-3

—

VPRE_LINE_REG_450K_PFM_HV[1]

Transient line in PFM mode with FPRE = 450 kHz

VBAT = 12 V - 28 V – 12 V

VPRE_PFM_TON_OTP[1:0] = 10

IPRE_PWM = 10 µA and 10 mA for VPRE_PFM = 5.05 V

dV/dt = 100 mV/µs, LPRE = 10 μH,

CIN_PRE = 47 µF + PI filter, COUT_PRE = 44 μF

-3

—

VPRE_LINE_REG_450K_PFM_LV[1]

Transient line in PFM mode with FPRE = 450 kHz

VBAT = 12 V - 28 V – 12 V

VPRE_PFM_TON_OTP[1:0] = 10

IPRE_PFM = 10 µA and 10 mA for VPRE_PFM = 5.05 V

dV/dt = 100 mV/µs, LPRE = 10 μH,

CIN_PRE = 47 µF + PI filter, COUT_PRE = 44 μF

-3

—

VPRE_LINE_REG_450K_PFM_

[1]

Transient line after drop out exit with FPRE = 450 kHz

VBAT = VPRE - 0.4 V to 12 V

VPRE_PFM_TON_OTP[1:0] = 10

IPRE_PFM = 10 µA and 10 mA for VPRE_PFM = 5.05 V

dV/dt = 100 mV/µs, LPRE = 2.2 μH,

CIN_PRE = 47 µF + PI filter, COUT_PRE = 44 μF

-3

—

VPRE_LOTR_450K_PFM_150m[1]

Transient load response in PFM mode with FPRE = 450 kHz

10 mA to 100 mA step and 100 mA to 10 mA step

di/dt = 300 mA/µs, COUT_PRE ≥ 22 µF, LPRE = 10 µH

VPRE_PFM_TON_OTP[1:0] = 10

-3

—

VPRE_LOTR_450K_PFM_10m[1]

Transient load response in PFM mode with FPRE = 450 kHz

VSUP = VSUP_PWR = 5.4 V, VPRE = 5.05 V

10 µA to 10 mA step and 10 mA to 10 µA step

di/dt = 10 mA/µs, COUT_PRE ≥ 22 µF, LPRE = 10 µH

VPRE_PFM_TON_OTP[1:0] = 10

-1.5

—

1.5

VPRE_LINE_REG_2M2_PFM_HV[1]

Transient line in PFM mode with FPRE = 2.25 MHz

VBAT = 12 V - 28 V – 12 V

VPRE_PFM_TON_OTP[1:0] = 10

IPRE_PFM = 10 µA and 10 mA for VPRE_PFM = 5.05 V

dV/dt = 100 mV/µs, LPRE = 2.2 μH,

CIN_PRE = 47 µF + PI filter, COUT_PRE = 44 μF

-3

—

VPRE_LINE_REG_2M2_PFM_LV[1]

Transient line in PFM mode with FPRE = 2.25 MHz

VBAT = 6 V - 12 V – 6 V

VPRE_PFM_TON_OTP[1:0] = 10

IPRE_PFM = 10 µA and 10 mA for VPRE_PFM = 5.05 V

dV/dt = 100 mV/µs, LPRE = 2.2 μH,

CIN_PRE = 47 µF + PI filter, COUT_PRE = 44 μF

-3

—

Table 100. VPRE electrical characteristics...continued

FS26_SDS

All information provided in this document is subject to legal disclaimers.

Product short data sheet

Rev. 6.0 — 12 December 2025

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