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| Freescale Semiconductor, Inc. ANALOG PRODUCTS MC33702 FACT SHEET Freescale Semiconductor, Inc... 33702 MICROPROCESSOR POWER SUPPLY (3.0 A) The 33702 is a monolithic IC providing an efficient means of obtaining power for the Motorola Power QUICC I and II microprocessor families and other advanced microprocessors. The IC incorporates a high-performance synchronous switching regulator. The regulator is capable of delivering 3.0 A to power the microprocessor's core and linear circuitry to control an external low-drop FET for powering the microprocessor's I/O operations. Both regulator output voltages are independently adjustable. A boost converter allows high-accuracy output voltages to be developed from source operating voltages as low as 2.8 V. Seven 1.0% Output Voltage Margining steps are provided to facilitate easy system development. APPLICATIONS POWER MANAGEMENT * Power Management of Advanced Microprocessor Based Systems * Telecom and Network Cards * Wireless Modems * ADSL Line Cards * Cable Modems * Li-ion Cell Equipment * Portable Equipment Simplified Application Diagram 2.8 to 6.0 V 33702 VIN2 VBD EN1 EN2 SCL SDA ADDR VIN1 LDRV CS LDO LCMP LFB VBST RT RESET BOOT SW VOUT INV PORESET VDDL (Core) Other Circuits VLDO 0.8 to 5.0 V (Adjustable) 1.0 A VDDH (I/Os) MPC82XX VOUT 0.8 to 5.0 V (Adjustable) 3.0 A CLKSYN CLKSEL FREQ VDDI GND PGND For More Information On This Product, Go to: www.freescale.com SWITCHING Freescale Semiconductor, Inc. FEATURES * I2C with address register selection for programming control * Programmable internal Watchdog and Power-ON Reset to ensure MCU performance integrity * Synchronous buck converter with cycle-by-cycle PWM current mode control for enhanced output voltage accuracy * Boost converter for enhanced low-voltage performance * Adjustable switching regulator output voltage via external resistor divider * External RC programmed Reset Power-UP Delay timer * Additional devices available for comparison in Analog Selector Guide SG1002/D Freescale Semiconductor, Inc... CUSTOMER BENEFITS * High-performance power source supporting advanced microprocessors * High-efficiency step-down switching regulator * Reduced PC board space resulting in enhanced application reliability and lower costs * Self-contained Watchdog with Power-ON Reset * Predictable up/down power sequencing to ensure CPU integrity * Flexible application protection and programmable performance features * Voltage margining for easy system development Performance Typical Values Operating Voltage Output Voltages: SW (Adjustable) LDO (Adjustable) Voltage Margining Buck Converter Line & Load Reg. Current Limit PWM Freq. (Adjustable) Operating Temp 2.8 V to 6.0 V 0.8 to 5.0 V @ 3.0 A 0.8 to 5.0 V @ 1.0 A 7 steps 1.0% 1.0% 4.5 A 200 to 400 kHz -40C TA 105C For More Information On This Product, Go to: www.freescale.com Freescale Semiconductor, Inc. 33702 Internal Block Diagram VIN1 VIN VDDI Internal Supply VDDI VDDI VBST 8.0 V VBST Power Enable VDDI Bandgap Voltage Reference VDDI VBST LDRV CS VBD Freescale Semiconductor, Inc... Boost Control VREF VREF EN1 EN2 RESET Reset Control POR Timer SysCon I Control 2C RESET RT I2C Control Thermal Limit ADDR SDA SCL Switcher Oscillator 300 kHz Slope Comp I2C Interface PWM Comp Error Amp + + 0.8 V To Reset Control CLKSEL CLKSYN FREQ + VREF - VDDI Linear Regulator Control ILim LDO VREF LFB LCMP VLDO Power Sequencing Voltage Margining Watchdog Timer Power Seq UVLO VBST VBST BOOT Power Down VOUT Current Limit VDDI Buck HS and LS Driver Q1 (2) VIN2 SysCon SoftSt Buck Control Logic (2) Q2 SW PGND (2) - VOUT Power Seq INV VOUT (4) PGND Protection Detect Limiting Shut Down Auto Recovery Input Under Voltage Output Over Voltage Output Under Voltage Over Current/SC Over Temperature * * * * * * * * * * * * * For More Information On This Product, Go to: www.freescale.com Freescale Semiconductor, Inc. Freescale Semiconductor, Inc... Ordering Information Package Ship Method Motorola Part Number 32 SOICW Data Sheet Order Number Rail T/R **33702DWB **33702DWBR2 MC33702/D Contact Sales for Evaluation Kit Availability **Prefix Index: PC = Eng Samples; XC = In Qual; MC = Production QUESTIONS * Do you need an accurate power management IC to power an advanced microprocessor? * Do you have little PC board space available for power management? * Are you looking for an easy-to-design power management IC with protection and operating features that can be performance programmed? How to reach us: USA/EUROPE/Locations Not Listed: Motorola Literature Distribution; P.O. Box 5405, Denver, Colorado 80217 1-800-521-6274 or 480-768-2130 JAPAN: Motorola Japan Ltd.; SPS, Technical Information Center, 3-20-1, Minami-Azabu. Minato-ku, Tokyo 106-8573 Japan 81-3-3440-3569 ASIA/PACIFIC: Motorola Semiconductors H.K. Ltd.; Silicon Harbour Centre, 2 Dai King Street, Tai Po Industrial Estate, Tai Po, N.T., Hong Kong 852-26668334 HOME PAGE: http://motorola.com/semiconductors MOTOROLA and the Stylized M Logo are registered in the U.S. Patent and Trademark Office. All other product or service names are the property of their respective owners. Motorola, Inc. is an Equal Opportunity Affirmative Action Employer (c) Motorola, Inc. 2003 MC33702FS/D Rev. 1 For More Information On This Product, Go to: www.freescale.com |
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