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MC34701EKR2 Scheda tecnica(PDF) 1 Page - Freescale Semiconductor, Inc

Il numero della parte MC34701EKR2
Spiegazioni elettronici  1.5 A Switch-Mode Power Supply with Linear Regulator
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Produttore elettronici  FREESCALE [Freescale Semiconductor, Inc]
Homepage  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

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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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