Datasheet > 34712

34712

更新时间： 2022-04-23 23:00:11

品牌	Logo	应用领域
飞思卡尔 - FREESCALE		开关双倍数据速率
页数	文件大小	规格书
23页	473K
描述
3.0A 1.0MHz Fully Integrated DDR Switch-Mode Power Supply

阅读下载

获取价格

数据手册

如果您发现信息不准确，欢迎纠错

34712 数据手册

Document number: MC34712

Rev. 4.0, 5/2007

Freescale Semiconductor

Advance Information

3.0 A 1.0 MHz Fully Integrated

DDR Switch-Mode Power

Supply

34712

The 34712 is a highly integrated, space efficient, low cost, single

synchronous buck switching regulator with integrated N-channel

power MOSFETs. It is a high performance point-of-load (PoL) power

supply with the ability to track an external reference voltage.

SWITCH-MODE POWER SUPPLY

Its high efficient 3.0 A sink and source capability combined with its

voltage tracking/sequencing ability and tight output regulation, makes

it ideal to provide the termination voltage (V_TT) for modern data buses

such as Double-Data-Rate (DDR) memory buses. It also provides a

buffered output reference voltage (V_REF) to the memory chipset

The 34712 offers the designer the flexibility of many control,

supervisory, and protection functions to allow for easy implementation

of complex designs. It is housed in a Pb-Free, thermally enhanced,

and space efficient 24-Pin Exposed Pad QFN.

Features

EP SUFFIX

98ARL10577D

24-PIN QFN

• 45 mΩ Integrated N-Channel Power MOSFETs

• Input Voltage Operating Range from 3.0 V to 6.0 V

• ±1 % Accurate Output Voltage, Ranging from 0.7 V to 1.35 V

• ±1 % Accurate Buffered Reference Output Voltage

• Programmable Switching Frequency Range from 200 kHz to

1.0 MHz with a default of 1.0 MHz

• Over Current Limit and Short Circuit Protection

• Thermal Shutdown

• Output Overvoltage and Undervoltage Detection

• Active Low Power Good Output Signal

ORDERING INFORMATION

Temperature

Package

Device

Range (T )

MC34712EP/R2

-40 to 85°C

24 QFN

• Active Low Standby and Shutdown Inputs

• Pb-Free Packaging Designated by Suffix Code EP.

V_IN

(3.0V TO 6.0V)

34712

PVIN

BOOT

TERMINATING

RESISTORS

V_DDQ

VREFIN

V_TT

VOUT

VIN

MEMORY

BUS

V_DDQ

VDDI

FREQ

GND

INV

DDR MEMORY

COMP

CHIPSET

V_DDQ

VREFOUT

V_REF

V_IN

DDR MEMORY

CONTROLER

PGND

MCU

STBY

Figure 1. 34712 Simplified Application Diagram

* This document contains certain information on a new product.

Specifications and information herein are subject to change without notice.

12 3 4 5 6 7...23

下载PDF

与34712相关器件

型号	品牌	描述	获取价格	数据表
347120002	ITT	Thumb/Pushwheel Switch, 4 Switches, Binary Coded Hexadecimal, 16 Positions, 0.1A, 28VDC, S	获取价格
347120003	ITT	Thumb/Pushwheel Switch, 4 Switches, Binary Coded Hexadecimal, 16 Positions, 0.1A, 28VDC, S	获取价格
347120101	ITT	Thumb/Pushwheel Switch, 4 Switches, Binary Coded Hexadecimal, 16 Positions, 0.1A, 28VDC, S	获取价格
347120103	ITT	Thumb/Pushwheel Switch, 4 Switches, Binary Coded Hexadecimal, 16 Positions, 0.1A, 28VDC, S	获取价格
347120300	ITT	THUMB/PUSHWHEEL SWITCH-4SWITCHES, BINARY CODED HEXADECIMAL, 0.1A, 28VDC, PANEL MOUNT	获取价格
347120301	ITT	THUMB/PUSHWHEEL SWITCH-4SWITCHES, BINARY CODED HEXADECIMAL, 0.1A, 28VDC, PANEL MOUNT	获取价格