K60P100M100SF2RM Datasheet, PDF (1302/1809 Pages) Freescale Semiconductor, Inc – K60 Sub-Family Reference Manual

Introduction
47.1.1 Overview
A simplified block diagram for the USB Voltage Regulator module is shown below.
STANDBY Regulator
Yes
No
STANDBY
Other Modules
Power
Supply
reg33_in
RUN Regulator
reg33_out
Voltage Regulator
Chip
Regulated Output
Voltage
ESR: 5m -> 100m Ohms
External Capacitor
typical = 2.2uF
Figure 47-2. USB Voltage Regulator Block Diagram
This module uses 2 regulators in parallel. In run mode, the RUN regulator with the
bandgap voltage reference is enabled and can provide up to 120 mA load current. In run
mode, the STANDBY regulator and the low power reference are also enabled, but a
switch disconnects its output from the external pin. In STANDBY mode, the RUN
regulator is disabled and the STANDBY regulator output is connected to the external pin
supplying up to 3 mA load current.
Internal power mode signals control whether the module is in RUN or STANDBY mode.
47.1.2 Features
• Low drop-out linear voltage regulator with one power channel (3.3V).
• Low drop-out voltage: 300 mV.
• Output current: 120 mA.
• Three different power modes: RUN, STANDBY and SHUTDOWN.
• Low quiescent current in RUN mode.
• Typical value is around 120 uA (one thousand times smaller than the maximum
load current).
• Very low quiescent current in STANDBY mode.
• Typical value is around 1 uA.
1302
K60 Sub-Family Reference Manual, Rev. 6, Nov 2011
Freescale Semiconductor, Inc.