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• Small output capacitor: 2.2 µF
• Stable with aluminum, tantalum or ceramic capacitors.
34.1.3 Modes of Operation
The regulator has these power modes:
• RUN—The regulating loop of the RUN regulator and the STANDBY regulator are
active, but the switch connecting the STANDBY regulator output to the external pin
is open.
• STANDBY—The regulating loop of the RUN regulator is disabled and the standby
regulator is active. The switch connecting the STANDBY regulator output to the
external pin is closed.
• SHUTDOWN—The module is disabled.
The regulator is enabled by default. This means that once the power supply is provided,
the module power-up sequence to RUN mode starts.
34.2 USB Voltage Regulator Module Signal Descriptions
The following table shows the external signals for the regulator.
Table 34-1. USB Voltage Regulator Module Signal Descriptions
Signal
Description
reg33_in
Unregulated power supply
reg33_out
Regulator output voltage
Freescale Semiconductor, Inc.
KL27 Sub-Family Reference Manual , Rev. 5, 01/2016
Chapter 34 USB Voltage Regulator (VREG)
I/O
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