MFS5600AMBAFES datasheet(34/118 Pages) NXP

34 / 118 page

NXP Semiconductors

FS5600

Automotive buck regulator and controller with voltage monitors and watchdog timer

Parameter

Symbol

Min

Typ

Max

Unit

SYNCIN input clock frequency range (OTP_FSYNC_RANGE

= 0)

FSYNCIN

2000

—

3000

kHz

SYNCIN input clock frequency range (OTP_FSYNC_RANGE

= 1)

FSYNCIN

333

—

500

kHz

SYNCIN input accepted duty cycle of signal (set internal

oscillator frequency closest to the resulting high frequency

clock from external clock source)

Fduty

—

SYNCOUT output logic level low

VOL_SYNCOUT

—

0.3 x

VDDIO

SYNCOUT output logic level high

VOH_

SYNCOUT

0.7 x

VDDIO

—

VDDIO

Table 27. FS5600 clock electrical characteristics...continued

14.2 High frequency oscillator

The FS5600 features a high frequency clock with nominal frequency of 20 MHz. The clock frequency can

be adjusted using the CLK_FREQ[3:0] bits via I2C. The initial value of CLK_FREQ[3:0] is loaded from OTP

memory from OTP_CLK_FREQ[3:0] bits. The high frequency oscillator is referred to as the 20 MHz clock in this

document for simplicity.

OTP_CLK_FREQ[3:0]

CLK_FREQ[3:0]

Clock frequency (MHz)

0000

0001

0010

0011

0100

0101

Not used

0110

Not used

0111

Not used

1000

Not used

1001

1010

1011

1100

1101

Not used

1110

Not used

1111

Not used

Table 28. Internal oscillator frequency selection

FS5600

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

Product data sheet

Rev. 4 — 29 April 2024

34 / 118

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