MFS5600AMBA0ES datasheet(30/111 Pages) NXP

30 / 111 page

NXP Semiconductors

FS5600

Automotive buck regulator and controller with voltage monitors and watchdog timer

Parameter

Symbol

Min

Typ

Max

Unit

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

14.3 Spread spectrum

The internal oscillator provides a programmable frequency spread spectrum to help

manage EMC in automotive applications. Spread spectrum is enabled by setting the

FSS_EN bit. The initial value of FSS_EN is loaded from OTP_FSS_EN and can be

subsequently changed via I2C.

FS5600

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

Product data sheet

Rev. 3 — 2 August 2022

30 / 111

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