MC34710FS, Dual Output DC-DC & Linear Regulator IC

Analog Products Fact Sheet
Power
Management
MC33710
MC34710
Switching
Regulator
Dual Output DC-DC & Linear Regulator IC
DESCRIPTION
The 34710 is a dual-output power regulator IC
integrating a switching regulator, linear
regulator, supervisory circuitry, 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 user-selectable 5.0 V / 3.3 V buck DC-DC
switching regulator is provided for board-level
I/O and user circuitry up to 700 mA. The linear
regulator provides MCU core supply voltages
selectable as either 3.3V, 2.5V, 1.8V, or 1.5V
at currents up to 500 mA.
34710 SIMPLIFIED APPLICATION DIAGRAM
VI/O
13 V to 32 V
34710
B+
VB
CT
VSWITCH
CP2
VI/O
VFB
CP1
MCU
MODE0
MODE1
MODE2
The switching and linear regulator output
voltages are set via three digital input mode
terminals.
RST
LINB+
VCORE
GND
VCORE
APPLICATIONS
PERFORMANCE
• Consumer Networking Applications
• Cable, Modem, Set-top Box
Switching Regulator
Output Voltage, V I/O
• Factory Automation – Robotics
Switching Regulator IV I/O
0.7 A
Linear Regulator VCORE
3.3 V / 2.5 V / 1.8 V / 1.5 V
Linear Regulator IVCORE
500 mA
PWM Frequency
200 kHz
• Security Products
• Ethernet Appliance
Operating Temperature
TYPICAL VALUES
5.0 V / 3.3 V
0°C ≤ TA ≤ 85°C
FEATURES
QUESTIONS
• High-current adjustable 5.0 V /3.3 V switching regulator
• Do you need an accurate power
management IC to power MCUs and board
level I/Os?
• Low-noise user-selectable 3.3 V /2.5 V /1.8 V /1.5 V linear regulator
• On-chip thermal shutdown and error reset circuitry
• Supervisory functions (Power-ON Reset and error reset circuitry)
• Sequenced I/O and core voltages
• Devices available for comparison are in the Analog Product Selector
Guide - SG1002, and Automotive Product Selector Guide - SG187.
DETECT
SHUT
DOWN
LIMITING
Overcurrent
z
z
z
Overtemperature
z
z
Over/Undervoltage
z
z
PROTECTION
• Are you looking for a cost-effective solution
while maintaining supervisory functions?
• Does your product use a ColdFire, ARM,
DSP56800 or similar microcontroller?
CUSTOMER BENEFITS
ORDERING INFORMATION
• Simple solution for powering multi-voltage MCUs, board I/Os, and
other circuitry
Device
• Low system cost, optimized performance/cost ratio
**PC33710EW
• Reduced component count, simple circuit
**PC33710EW/R2
• Built-in protection features at both system and device level improves
overall reliability
MC34710EW
• Low cost 32-pin thermally enhanced SOICW package
• Power supplies are sequenced
Temperature
Range (TA)
MC34710EW/R2
Package
-40°C to
105°C
32 SOICW-EP
-0°C to 85°C
32 SOICW-EP
Data Sheet Order Number
MC34710
**Prefix Index:
PC = Engineering Samples; MC = Production
** Device in development. Electrical parameters
being defined.
32 SOICW
0.65 mm Pitch
11.0 mm x 7.5 mm Body
3.0 mm x 3.0 mm Exposed Pad
Freescale™ and the Freescale logo are trademarks of Freescale Semiconductor, Inc.
All other product or service names are the property of their respective owners.
© Freescale Semiconductor, Inc. 2005. All rights reserved.
MC34710FS, Rev 3.0