MFS2301BMBACEP datasheet(37/230 Pages) NXP

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NXP Semiconductors

FS23

Safety system basis chip (SBC) with power management, CAN FD and LIN transceivers

TA = –40 °C to 125 °C, unless otherwise specified. V1_IN = VBUCK_IN (min) to 36 V, unless otherwise specified. All voltages referenced to ground.

Symbol

Description

Min

Typ

Max

Unit

IBUCK_PFM

Output current capability in PFM mode (LPON mode only)

100

RHS_BUCK

High-side MOSFET RDSON

(VBOS = 5 V, including bonding)

350

735

mΩ

RLS_BUCK

Low-side MOSFET RDSON

(VBOS = 5 V, including bonding)

350

735

mΩ

RBUCK_DIS

Discharge resistor (when HVBUCK is disabled – LPOFF)

100

Ω

TWARNV1

Temperature prewarning

125

145

160

°C

TSDV1

Thermal shutdown threshold

175

190

215

°C

TSDV1_HYST

Thermal shutdown threshold hysteresis

°C

IOC_AVG_PWM[1]

Average overcurrent threshold in PWM mode

BUCK_AVG_OC_PWM_OTP[2:0] = 000

BUCK_AVG_OC_PWM_OTP[2:0] = 001

BUCK_AVG_OC_PWM_OTP[2:0] = 010

BUCK_AVG_OC_PWM_OTP[2:0] = 011

BUCK_AVG_OC_PWM_OTP[2:0] = 100

BUCK_AVG_OC_PWM_OTP[2:0] = 101

BUCK_AVG_OC_PWM_OTP[2:0] = 110 (for 450 kHz only)

130

210

300

390

468

546

624

200

300

400

500

600

700

800

290

400

505

630

735

854

976

IOC_PK_PWM[1]

Peak overcurrent threshold in PWM mode

BUCK_PK_OC_PWM_OTP[2:0] = 010

BUCK_PK_OC_PWM_OTP[2:0] = 011

BUCK_PK_OC_PWM_OTP[2:0] = 100

BUCK_PK_OC_PWM_OTP[2:0] = 101

BUCK_PK_OC_PWM_OTP[2:0] = 110

BUCK_PK_OC_PWM_OTP[2:0] = 111

292

357

422

540

624

702

425

525

625

725

825

925

639

781

910

1050

1190

1235

IOC_PK_PFM

Peak overcurrent threshold in PFM mode

BUCK_PK_OC_PFM_OTP[2:0] = 101

BUCK_PK_OC_PFM_OTP[2:0] = 110

BUCK_PK_OC_PFM_OTP[2:0] = 111

546

624

702

700

800

900

854

976

1150

IOC_LS

Low-side FET overcurrent threshold

0.3

0.8

1.18

Dynamic electrical characteristics

FSW_BUCK

Operating frequency in PWM mode:

HVBUCK @ 450kHz

HVBUCK @ 2.2MHz

405

2.025

450

2.250

495

2.475

kHz

MHz

DCmax_drop

Maximum duty cycle in Dropout mode

90.5

tV1OV_DGLT_STUP

Overvoltage deglitch time at startup

µs

tV1OV_DGLT

Overvoltage deglitch time

V1MON_OVDGLT_OTP[0] = 0

V1MON_OVDGLT_OTP[0] = 1

µs

tV1OC_DGLT

Overcurrent deglitch time

µs

tV1OCOV_DGLT

Low-side overcurrent deglitch time

380

920

TTSD_V1_FILT

Thermal shutdown filtering time

µs

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

VBUCK_LINE_REG_PWM

Transient line in PWM mode @ 450 kHz and 2.2 MHz

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

IBUCK = 1 mA and 300 mA

VBUCK = 3.3V and 5.0 V

dv/dt = 100 mV/µs

-3

VBUCK_LINE_REG_DO

Transient line after dropout exit @ 450 kHz and 2.2 MHz

VSUP = VBUCK - 0.4 V to 14 V

IBUCK = 1 mA and 300 mA

VBUCK = 3.3V and 5.0 V

dv/dt = 200 mV/µs

-3

VBUCK_LOTR_PWM

Transient load response in PWM mode @ 450 kHz and 2.2 MHz

50 mA to 350 mA step

1 mA to 150 mA step

di/dt = 300 mA/µs

-3

VBUCK_LOTR_PWM_MAX

Transient load response in PWM mode @450 kHz

50 mA to 500 mA step

-4

Table 15. Electrical characteristics...continued

FS23

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

Product data sheet

Rev. 7.0 — 16 October 2024

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