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MC34701EKR2 Scheda tecnica(PDF) 1 Page - Freescale Semiconductor, Inc |
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MC34701EKR2 Scheda tecnica(HTML) 1 Page - Freescale Semiconductor, Inc |
1 / 38 page Freescale Semiconductor, Inc. reserves the right to change the detail specifications, as may be required, to permit improvements in the design of its products. Document Number: MC34701 Rev 6.0, 2/2007 Freescale Semiconductor Technical Data © Freescale Semiconductor, Inc., 2007. All rights reserved. 1.5 A Switch-Mode Power Supply with Linear Regulator The 34701 provides the means to efficiently supply the Freescale Power QUICC™ I, II, and other families of Freescale microprocessors and DSPs. The 34701 incorporates a high- performance switching regulator, providing the direct supply for the microprocessor’s core, and a low dropout (LDO) linear regulator control circuit provides the microprocessor I/O and bus voltage. The switching regulator is a high-efficiency synchronous buck regulator with integrated N-channel power MOSFETs to provide protection features and to allow space-efficient, compact design. The 34701 incorporates many advanced features; e.g., precisely maintained up/down power sequencing, ensuring the proper operation and protection of the CPU and power system. Features • Operating Voltage from 2.8 V to 6.0 V • High-Accuracy Output Voltages • Fast Transient Response • Switcher Output Current Up to 1.5 A • Undervoltage Lockout and Overcurrent Protection • Enable Inputs and Programmable Watchdog Timer • Voltage Margining via I2C™ Bus • Reset with Programmable Power-ON Delay • Pb-Free Packaging Designated by Suffix Code EK I2C is a trademark of Philips Corporation. Figure 1. 34701 Simplified Application Diagram POWER SUPPLY INTEGRATED CIRCUIT 34701 ORDERING INFORMATION Device Temperature Range (TA) Package MC34701EK/R2 -40 to 85°C 32 SOICW EK (PB-FREE) SUFFIX 98AARH99137A 32-PIN SOICW Other Circuits RT VBD VDDH (I/Os) VDDL (Core) MPC8xxx 34701 2.8 V to 6.0 V Input VIN2 CLKSEL FREQ PORESET GND SDA SCL Adjustable: 0.8 V to VIN - Dropout ADDR VIN1 LDRV LDO LFB CS RST SW PGND INV VBST BOOT VOUT CLKSYN Optional EN1 EN2 VBST Adjustable: 0.8 V to VIN - Dropout VDDI |
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