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MC34701EW Datasheet(PDF) 1 Page - Freescale Semiconductor, Inc |
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MC34701EW Datasheet(HTML) 1 Page - Freescale Semiconductor, Inc |
1 / 39 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 7.0, 8/2007 Freescale Semiconductor Technical Data © Freescale Semiconductor, Inc., 2007. All rights reserved. 1.5A 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 2.8V to 6.0V • High-accuracy output voltages • Fast transient response • Switcher output current up to 1.5A • Under-voltage 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 EW I2C is a trademark of Philips Corporation. Figure 1. 34701 Simplified Application Diagram POWER SUPPLY 34701 ORDERING INFORMATION Device Temperature Range (TA) Package MCZ34701EW/R2 -40 to 85°C 32 SOICW EW (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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