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