MFS5600AMBAFES datasheet(2/118 Pages) NXP

2 / 118 page

NXP Semiconductors

FS5600

Automotive buck regulator and controller with voltage monitors and watchdog timer

2 Features and benefits

• 2 x high-voltage buck converters:

– Buck controller - external FETs - 900 mA gate drive - up to 15 A load capability

– Buck regulator - internal FETs - 3 A+ load capability

– ±2 % output accuracy

– 250 kHz to 3 MHz switching frequency

• High-efficiency PFM mode

• Safety features:

– Available in enhanced ASIL B, ASIL B, and QM variations

– Two internal and up to four high-accuracy external voltage monitors

– Windowed watchdog timer

– ERRMON and FCCU monitoring

– 2 x PGOOD and 1 x FS0B outputs

– ABIST and LBIST for latest failure check

• GPIOs for seamless operation with PF PMICs

• Rated from –40 °C to 150 °C TJ

• 32-Ld 5 mm x 5 mm QFN

• AEC-Q100 Grade-1 Qualified

2.1 Overview

aaa-037150

SW1 - Buck Regulator

FS5600 Functional Block Diagram

Up to 36 V Input

> 3 A Load Current

1.8 V to 8.0 V Output

Internal FET

4x VMON

2x PGOOD

ABIST

LBIST

Clock Sync

FS0B

Watchdog

I2C

Spread

Spectrum

OTP

Memory

3x GPIO

Thermal

Shutdown

Frequency

Tuning

SW2 - Buck Controller

Up to 36 V Input

Up to 15 A Load

1.8 V to 7.2 V Output

External FET

Figure 1. FS5600 Functional block diagram

FS5600

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

Product data sheet

Rev. 4 — 29 April 2024

2 / 118

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