MPF0900AMBA2ES datasheet(123/205 Pages) NXP

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NXP Semiconductors

PF09

Nine-channel power management IC with advanced system safety monitoring

OTP_SWx_UVTH[2:0]

UV threshold

100

95.5%

101

95.0%

110

94.5%

111

94.0%

Table 156. SWx UV threshold configuration bits...continued

The overvoltage (OV) monitoring threshold for the switching regulators is set in the OTP registers via the

OTP_SWx_OVTH[2:0] bits.

OTP_SWx_OVTH[2:0]

OV threshold

000

102.5%

001

103.0%

010

103.5%

011

104.0%

100

104.5%

101

105.0%

110

105.5%

111

106.0%

Table 157. SWx OV threshold configuration bits

For safety considerations, the OV/UV monitoring thresholds are selected in OTP during the part number

configuration phase, and they are not allowed to be changed during system operation. However, the system

can choose to open the monitoring range during the Monitored STANDBY state, to accommodate larger DC/AC

output voltage accuracy on the SWx regulators due to the PFM operation.

The SWx_UVTH_STBY and SWx_OVTH_STBY bits are provided to select whether to use the same OV/UV

monitoring threshold in RUN and STANDBY states or force the maximum OV/UV monitoring threshold during

the STANDBY state.

SWx_UVTH_STBY

UV threshold in STANDBY

Same as RUN state

Open to maximum threshold

Table 158. SWx UV threshold configuration bits during STANDBY

SWx_OVTH_STBY

OV threshold in STANDBY

Same as RUN state

Open to maximum threshold

Table 159. SWx OV threshold configuration bits during STANDBY

By default, the SWx_UVTH_STBY and SWx_OVTH_STBY bits are set to 1 at power up, and the MCU can

modify their values before requesting access to the STANDBY states.

The undervoltage monitoring threshold for the LDO regulators is set in the OTP registers via the

OTP_LDOx_UVTH[2:0] bits.

PF09

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

Product data sheet

Rev. 1.3 — 16 December 2025

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