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FS26 Scheda tecnica(PDF) 91 Page - NXP Semiconductors |
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FS26 Scheda tecnica(HTML) 91 Page - NXP Semiconductors |
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91 / 156 page  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_PFM_DO[1] Transient line after drop out exit with FPRE = 2.25 MHz 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 — 3 % VPRE_LOTR_2M2_PFM_100m[1] Transient load response in PFM mode with FPRE = 2.25 MHz 10 mA to 100 mA step and 100 mA to 10 mA step di/dt = 300 mA/µs, COUT_PRE ≥ 22 µF, LPRE = 2.2 µH VPRE_PFM_TON_OTP[1:0] = 10 -3 — 3 % VPRE_LOTR_2M2_PFM_10m[1] Transient load response in PFM mode with FPRE = 2.25 MHz 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 = 2.2 µH VPRE_PFM_TON_OTP[1:0] = 10 -1.5 — 1.5 % Operating frequency in PWM mode FPRE VPRE_CLK_OTP = 0 VPRE_CLK_OTP = 1 390 1.90 450 2.25 500 2.5 kHz MHz Switching node rising and falling edge setting tPRESW_SLR VPRE_SR_OTP = 0 VPRE_SR_OTP = 1 — — — — 2 4 ns HS minimum ON time in PFM mode with FPRE = 450 kHz VPRE_CLK_OTP = 0, VPRE_IN = 12 V tPRE_ON_MIN_450K VPRE_PFM_TON_OTP[1:0] = 00 VPRE_PFM_TON_OTP[1:0] = 01 VPRE_PFM_TON_OTP[1:0] = 10 VPRE_PFM_TON_OTP[1:0] = 11 715 800 875 975 900 1000 1125 1250 1080 1250 1375 1525 ns HS minimum ON time in PFM mode with FPRE = 2.25 MHz VPRE_CLK_OTP = 1, VPRE_IN = 12 V tPRE_ON_MIN_2M2 VPRE_PFM_TON_OTP[1:0] = 00 VPRE_PFM_TON_OTP[1:0] = 01 VPRE_PFM_TON_OTP[1:0] = 10 VPRE_PFM_TON_OTP[1:0] = 11 350 385 420 470 440 500 550 600 530 620 690 755 ns tPRE_OFF_MIN HS minimum OFF time in PFM mode VPRE_IN = 12 V VPRE_PFM_TOFF_OTP[1:0] = 10 465 720 1035 ns External components Inductor value for FPRE = 450 kHz Nominal[3] Effective[4] 8.2 5.8 10 — 10 13 µH Inductor value for FPRE = 2.25 MHz LPRE Nominal[3] Effective[4] 2.2 1.5 2.2 — 4.7 6.1 µH RDCR_LPRE Inductor DC resistance — 60 — mΩ CIN_PRE Effective[4] input capacitor value 10 — — µF Nominal[3] bootstrap capacitor value 22 — 100 CBOOT_PRE nF Effective[4] output capacitor value with FPRE = 450 kHz 20 — 100 COUT_PRE Effective[4] output capacitor value with FPRE = 2.25 MHz 20 — 50 µF Table 100. VPRE electrical characteristics...continued [1] For all these parameters, the maximum ambient temperature is TA = 85 °C. [2] VPREOC_I flag is correctly reported when VPRE_PWM + VPRE_HDR < VSUP_PWR < 18 V. [3] For all regulators, the nominal value is the value normalized. FS26_SDS All information provided in this document is subject to legal disclaimers. © 2025 NXP B.V. All rights reserved. Product short data sheet Rev. 6.0 — 12 December 2025 Document feedback 91 / 156 |
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