Datasheet > MC34701

MC34701

更新时间： 2024-11-09 04:40:51

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
39页	777K
描述
1.5A Switch-Mode Power Supply with Linear Regulator

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MC34701 数据手册

Document Number: MC34701

Rev 7.0, 8/2007

Freescale Semiconductor

Technical Data

1.5A Switch-Mode Power

Supply with Linear Regulator

34701

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.

POWER SUPPLY

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

EW (Pb-FREE) SUFFIX

98AARH99137A

• Operating voltage from 2.8V to 6.0V

• High-accuracy output voltages

32-PIN SOICW

• 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

ORDERING INFORMATION

Temperature

Package

Device

Range (T )

MCZ34701EW/R2

-40 to 85°C

32 SOICW

I²C is a trademark of Philips Corporation.

2.8 V to 6.0 V Input

34701

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. 34701 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...39

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