MFS2401AVBA0ES datasheet(35/151 Pages) NXP

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NXP Semiconductors

FS2400

Fail-safe system basis chip with SMPS and LDO, CAN FD transceiver

TA = –40 °C to 115 °C, unless otherwise specified. VBUCK + VHDR < V1_IN pin voltage < 36 V, unless otherwise specified. All voltages referenced to ground.

Symbol

Description

Min

Typ

Max

Unit

tBUCK_SS

Soft-start from 10 % to 90 %

BUCK_SS_OTP[1:0] = 00

BUCK_SS_OTP[1:0] = 01

BUCK_SS_OTP[1:0] = 10

BUCK_SS_OTP[1:0] = 11

200

431

873

1753

269

538

1077

2150

410

645

1281

2547

µs

tBUCK_DVS

DVS slope from 10 % to 90 % of the difference between initial and

final voltage, at VV1_BUCK_RANGE_OTP = 1 (values are multiplied

by 2 for VV1_BUCK_RANGE_OTP = 0)

BUCK_LP_DVS_OTP[1:0] = 00

BUCK_ LP_DVS _OTP[1:0] = 01

BUCK_ LP_DVS _OTP[1:0] = 10

BUCK_ LP_DVS _OTP[1:0] = 11

4.5

2.2

1.1

11.25

5.6

2.8

1.4

13.5

6.8

3.4

1.7

mV/µs

VBUCK_LINE_REG_PWM

Transient line in PWM mode

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

IBUCK = 1 mA and 400 mA

dv/dt= 100 mV/µs

FSW_BUCK = 450 kHz:

LV1_BUCK = 22 μH, COUT_BUCK = 40 μF

FSW_BUCK = 2.2 MHz :

LV1_BUCK = 4.7 μH, COUT_BUCK = 10 μF

-3

VBUCK_LINE_REG_DO

Transient line after dropout exit VSUP = VBUCK - 0.4 V to 14 V

IBUCK = 1 mA and 400 mA

dv/dt= 200 mV/µs,

FSW_BUCK = 450 kHz :

LV1_BUCK = 22 μH, COUT_BUCK = 40 μF

FSW_BUCK = 2.2 MHz :

LV1_BUCK = 4.7 μH, COUT_BUCK = 10 μF

-3

VBUCK_LOTR_PWM

Transient load response in PWM mode

1mA to 200 mA step

di/dt = 300 mA/µs

FSW_BUCK = 450 kHz :

LV1_BUCK = 22 μH, COUT_BUCK = 40 μF

FSW_BUCK = 2.2 MHz :

LV1_BUCK = 4.7 μH, COUT_BUCK = 10 μF

-3

VBUCK_LOTR_PFM

Transient load response in PFM mode

0.1mA to 100 mA step di/dt = 100 mA/µs,

FSW_BUCK = 450 kHz :

LV1_BUCK = 22 μH, COUT_BUCK = 40 μF

FSW_BUCK = 2.2 MHz :

LV1_BUCK = 4.7 μH, COUT_BUCK = 10 μF

-3

FSW_BUCK

Operating frequency in PWM mode

BUCK_CLK_OTP = 0

BUCK_CLK_OTP = 1

405

2.025

450

2.25

495

2.475

kHz

MHz

tBUCKHS_SLR

High-Side FET rising slew rate

BUCK_SRHSON_OTP[2:0] = 000 (for 450 kHz only)

BUCK_SRHSON_OTP[2:0] = 001 (for 450 kHz only)

BUCK_SRHSON_OTP[2:0] = 010 (for 450 kHz only)

BUCK_SRHSON_OTP[2:0] = 011

BUCK_SRHSON_OTP[2:0] = 100

BUCK_SRHSON_OTP[2:0] = 101

BUCK_SRHSON_OTP[2:0] = 110

BUCK_SRHSON_OTP[2:0] = 111

4.1

2.5

1.5

0.5

6.3

23.7

tBUCKHS_SLF

High-Side FET falling slew rate

BUCK_SRHSOFF_OTP[1:0] = 00 (for 450 kHz only)

BUCK_SRHSOFF_OTP[1:0] = 01 (for 450 kHz only)

BUCK_SRHSOFF_OTP[1:0] = 10

BUCK_SRHSOFF_OTP[1:0] = 11

6.4

2.5

21.5

Table 13. Electrical characteristics...continued

FS2400

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Product data sheet

Rev. 4 — 23 October 2024

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