MC34710 Datasheet, PDF (1/18 Pages) Motorola, Inc – Adjustable Dual Output Switching Power Supply

Freescale Semiconductor
Technical Data
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
to 32V, the 34710 is applicable to many commercial and industrial
applications using embedded MCUs.
A mode-selected 5.0 or 3.3V DC-DC switching regulator is
provided for board-level I/O and user circuitry up to 700mA. A linear
regulator provides mode-selected core supply voltages of either 3.3V,
2.5V, 1.8V, or 1.5V at currents up to 500mA.
The supervisor circuitry ensures that the regulator outputs follow a
predetermined power-up and power-down sequence.
Features
• Efficient 5.0V/3.3V 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
Document number: MC34710
Rev 4, 8/2008
34710
DUAL OUTPUT DC-DC & LINEAR
REGULATOR
EW SUFFIX (PB-FREE)
98ASA10627D
32-PIN SOICW
ORDERING INFORMATION
Device
MC34710EW/R2
Temperature
Range (T_A)
0°C to 85°C
Package
32 SOICW-EP
VI/O
13 V to 32 V
34710
B+
CT
VB
VSWITCH
CP2
VFB
CP1
MODE0
MODE1
MODE2
LINB+
RST
VCORE
GND
VI/O
VCORE
MCU
Figure 1. 34710 Simplified Application Diagram
* This document contains certain information on a new product.
Specifications and information herein are subject to change without notice.
© Freescale Semiconductor, Inc., 2006-2008. All rights reserved.