Document order number:

MC34710

Rev. 3.0, 3/2006

Freescale Semiconductor

Technical Data

* This document contains certain information on a new product.

Specifications and information herein are subject to change without notice.

© Freescale Semiconductor, Inc., 2006. All rights reserved.

Dual Output DC-DC & Linear

Regulator IC

The 34710 is a dual-output power regulator IC integrating

switching regulator, linear regulator, supervisory and power supply

sequencing circuitry. With a wide operating input voltage range of

13 V to 32 V, the 34710 is applicable to many commercial and

industrial applications using embedded MCUs.

A mode-selected 5.0 Vor 3.3 V DC-DC switching regulator is

provided for board-level I/O and user circuitry up to 700 mA. A linear

regulator provides mode-selected core supply voltages of either 3.3V,

2.5V,1.8V, or 1.5V at currents up to 500 mA.

The supervisor circuitry ensures that the regulator outputs follow a

predetermined power-up and power-down sequence.

Features

• Efficient 5.0 V/3.3 V Buck Regulator

• Low Noise LDO Regulator (mode-selected 3.3V, 2.5V,1.8V, or

1.5V)

• On-Chip Thermal Shutdown Circuitry

• Supervisory Functions (Power-ON Reset and Error Reset

Circuitry)

• Sequenced I/O and Core Voltages

• Pb-Free Packaging Designated by Suffix Code EW

Figure 1. 34710 Simplified Application Diagram

DUAL OUTPUT DC-DC & LINEAR

REGULATOR

DW SUFFIX

EW SUFFIX (PB-FREE)

98ASA10627D

32-TERMINAL SOICW

33710

ORDERING INFORMATION

Device

Temperature

Package

*PC33710EW/R2

-40°C to 105°

32 SOICW-EP

MC34710EW/R2

0°C to 85°C

32 SOICW-EP

34710

*Device in development.

Electrical parameters being defined.

MCU

34710

VSWITCH

VFB

LINB+

VCORE

VB

RST

GND

CP1

MODE0

MODE1

MODE2

CP2

B+

13 V to 32 V

VI/O

VCORE

CT

VI/O