Features - NXP Semiconductors MKL27Z128VFM4 Reference Manual

Table of Contents

Introduction

Figure 34-2. 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.

Internal power mode signals control whether the module is in RUN or STANDBY mode.

34.1.2 Features

• Low drop-out linear voltage regulator with one power channel (3.3 V).

• 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 µA (one thousand times smaller than the maximum

load current).

• Very low quiescent current in STANDBY mode.

• Typical value is around 1 µA.

• Automatic current limiting if the load current is greater than 290 mA.

• Automatic power-up once some voltage is applied to the regulator input.

• Pass-through mode for regulator input voltages less than 3.6 V

STANDBY Regulator

RUN Regulator

Voltage Regulator

KL27 Sub-Family Reference Manual , Rev. 5, 01/2016

Other Modules

Regulated Output

ESR: 5m -> 100m Ohms

External Capacitor

typical = 2.2uF

Freescale Semiconductor, Inc.