MFS5600AMBA0ES datasheet(26/111 Pages) NXP

26 / 111 page

NXP Semiconductors

FS5600

Automotive buck regulator and controller with voltage monitors and watchdog timer

OTP_SW2_PFM_TON[1:0]

SW2 PFM on-time (ns)

120

210

300

550

Table 25. OTP_SW2_PFM_TON[1:0] Selection

12.2.5 Soft-start

Startup of SW2 is internally controlled to eliminate overshoot and control the inrush

current. Soft-start time is programmable via OTP using the OTP_SW2_SS bit. See

Table 18 for values.

12.2.6 Current limit protection

Cycle-by-cycle current limit is utilized to limit the total permissible output current. Output

voltage returns to regulation when the overcurrent is removed. Current limit value is

programmable to 4 different values via OTP using the OTP_SW2_ILIM[1:0] bits. See

Table 18 for values.

12.2.7 Slope compensation

Slope compensation for the controller is set via OTP using the

OTP_SW2_SLOPECOMP[5:0] bits. See Section 12.2.1 "SW2 external component

selection" for values to use based on operating conditions.

OTP_SW2_SLOPECOMP[5:0]

SW2 slope compensation (mV/µs)

000000

000001

000010

000011

000100

000101

000110

000111

001000

001001

001010

103

001011

113

001100

123

001101

134

001110

144

001111

154

Table 26. OTP_SW2_SLOPECOMP[5:0] selection

FS5600

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

Product data sheet

Rev. 3 — 2 August 2022

26 / 111

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