FS26 datasheet(110/156 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

Output current capability

ITRKx

VTRKx_HDR = 500 mV, VTRKx = 3.3 V or 5 V

VTRKx_HDR = 350 mV, VTRKx = 3.3 V or 5 V

VTRKx = 1.2 V or 1.8 V

—

150

125

ILIM_TRKx

Output current limitation

160

—

360

ITRKx_LEAK

Reverse current leakage (VTRKx = 40 V). Valid when TRKx is disabled

and also in standby mode and LPOFF mode.

—

1.7

PSRRTRKx_450KHz

Power supply rejection ratio

VTRKx_HDR = 350 mV, 100 µA < ITRKx < 125 mA @ 450 kHz

COUT_TRKx[1] = 2.2 µF

—

PSRRTRKx_2.2MHz

Power supply rejection ratio

VTRKx_HDR = 350 mV, 100 µA < ITRKx < 125 mA @ 2.2 MHz

COUT_TRKx[1] = 2.2 µF

—

RTRKx_DIS

Discharge resistance (when TRKx is disabled)

100

155

Ω

TSDTRKx

Thermal shutdown threshold

175

—

°C

TSDTRKx_HYS

Thermal shutdown threshold hysteresis

—

°C

Dynamic electrical conditions

tTRKx_TSD

Thermal shutdown filtering time

µs

VTRKx_SLR

Output voltage ramp rate from 10 % to 90 %

mV/µs

VTRKx_LOTR

Transient load response

ITRKx = 100 µA to 125 mA step and 125 mA to 100 µA

di/dt = 125 mA/µs

-3

—

External components

CIN_TRKx

Effective[1] input capacitor (close to TRKIN pin)

0.5

—

µF

COUT_TRKx

Effective[1] output capacitance

1.1

2.2

µF

Table 110. TRKx Electrical characteristics...continued

[1]

For all regulators, the effective capacitor value is the capacitor value after tolerance, DC bias and aging removal.

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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