Datasheet > MC34702EKR2

MC34702EKR2

更新时间： 2024-11-09 02:56:43

品牌	Logo	应用领域
飞思卡尔 - FREESCALE		稳压器开关
页数	文件大小	规格书
38页	862K
描述
3.0 A Switch-Mode Power Supply with Linear Regulator

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MC34702EKR2 数据手册

Document Number: MC34702

Rev 6.0, 2/2007

Freescale Semiconductor

Technical Data

3.0 A Switch-Mode Power

Supply with Linear Regulator

34702

The 34702 provides the means to efficiently supply the Freescale

Power QUICC™ I, II, and other families of Freescale

microprocessors and DSPs. The 34702 incorporates a high-

performance switching regulator, providing the direct supply for the

microprocessor’s core, and a low dropout (LDO) linear regulator

control circuit providing the microprocessor I/O and bus voltage.

POWER SUPPLY

INTEGRATED CIRCUIT

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 34702 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

EK (PB-FREE) SUFFIX

98AARH99137A

• Operating Voltage from 2.8 V to 6.0 V

• High-Accuracy Output Voltages

32-PIN SOICW

• Fast Transient Response

• Switcher Output Current Up to 3.0 A

• Undervoltage Lockout and Overcurrent Protection

• Enable Inputs and Programmable Watchdog Timer

• Voltage Margining via I²C™ Bus

ORDERING INFORMATION

• Reset with Programmable Power-ON Delay

• Pb-Free Packaging Designated by Suffix Code EK

Temperature

Package

Device

Range (T )

I²C is a trademark of Philips Corporation.

MC34702EK/R2

-40 to 85°C

32 SOICW

2.8 V to 6.0 V Input

34702

Other

Circuits

VIN2

VIN1

VBD

VBST

LDRV

Adjustable:

0.8 V to VIN -

Dropout

LDO

LFB

VDDH (I/Os)

ADDR

MPC8xxx

SDA

SCL

PORESET

RST

GND

Adjustable:

0.8 V to VIN -

Dropout

VBST

BOOT

EN1

VDDL (Core)

EN2

VOUT

CLKSYN

PGND

CLKSEL

FREQ

INV

Optional

VDDI

Figure 1. 34702 Simplified Application Diagram

Freescale Semiconductor, Inc. reserves the right to change the detail specifications,

as may be required, to permit improvements in the design of its products.

12 3 4 5 6 7...38

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