Datasheet > FAN5078

FAN5078

更新时间： 2024-01-21 00:13:20

品牌	Logo	应用领域
飞兆/仙童 - FAIRCHILD		调节器双倍数据速率
页数	文件大小	规格书
16页	338K
描述
DDR/ACPI Regulator Combo

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中文翻译

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技术参数
数据手册

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FAN5078 技术参数

是否无铅：	不含铅	是否Rohs认证：	符合
生命周期：	Active	零件包装代码：	QFN
包装说明：	HVQCCN,	针数：	24
Reach Compliance Code：	unknown	风险等级：	5.74
其他特性：	ALSO OPERATES IN AVERAGE CURRENT MODE	模拟集成电路 - 其他类型：	SWITCHING CONTROLLER
控制模式：	CURRENT-MODE	控制技术：	PULSE WIDTH MODULATION
最大输入电压：	5.5 V	最小输入电压：	4.5 V
标称输入电压：	5 V	JESD-30 代码：	S-XQCC-N24
JESD-609代码：	e4	长度：	5 mm
湿度敏感等级：	1	功能数量：	1
端子数量：	24	最高工作温度：	85 °C
最低工作温度：	-10 °C	最大输出电流：	1.5 A
标称输出电压：	3.3 V	封装主体材料：	UNSPECIFIED
封装代码：	HVQCCN	封装形状：	SQUARE
封装形式：	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE	峰值回流温度（摄氏度）：	260
座面最大高度：	0.8 mm	表面贴装：	YES
切换器配置：	PUSH-PULL	最大切换频率：	345 kHz
温度等级：	OTHER	端子面层：	NICKEL PALLADIUM GOLD
端子形式：	NO LEAD	端子节距：	0.65 mm
端子位置：	QUAD	处于峰值回流温度下的最长时间：	NOT SPECIFIED
宽度：	5 mm

FAN5078 数据手册

May 2006

FAN5078

DDR/ACPI Regulator Combo

Features

Description

The FAN5078 DDR memory regulator combines a high-

efficiency Pulse-Width Modulated (PWM) controller to

generate the memory supply voltage, VDDQ, and a linear

regulator to generate termination voltage (VTT).

PWM regulator for VDDQ (2.5V or 1.8)

Linear LDO regulator generates VTT = VDDQ/2,

1.5A Peak sink/source capability

AMT / M-state support

Synchronous rectification provides high efficiency over a wide

range of load currents. Efficiency is further enhanced by using

the low-side MOSFET’s R_DS(ON)to sense current.

Control to generate 5V USB

ACPI drive and control for 5V DUAL generation

3.3V internal LDO for 3V-ALW generation

300 kHz fixed frequency switching

The VDDQ PWM regulator is a sampled current mode control

with external compensation to achieve fast load-transient

response and provide system design optimization.

The VTT regulator derives its reference and takes its power

from the VDDQ PWM regulator, output. The VTT termination

regulator is capable of sourcing or sinking 1.5A peak currents.

R_DS(ON)current sensing or optional current sense resistor

for precision over-current detect

Internal synchronous boot diode

Common Power Good signal for all voltages

Input under-voltage lockout (UVLO)

Thermal shutdown

In S5 M1 mode, the VDDQ switcher, VTT regulator, and the

3.3V regulators remain on. S3 mode keeps these regulators

on, but also turns on an external P-Channel to provide 5V

USB.

A single soft-start capacitor enables controlled slew rates for

both VDDQ and 3.3V-ALW outputs.

Latched multi-fault protection

Precision reference output for ULDO controllers

24-pin 5 x 5 MLP package

PGOOD becomes true in S0 only after all regulators have

achieved stable outputs.

In S5 (EN = 0), the 3.3V internal LDO stays on while the other

regulators are powered down.

Applications

DDR VDDQ and VTT voltage generation with ACPI

support

Desktop PC's

Servers

Ordering Information

Part Number

Temperature Range

Package

Packing

FAN5078MPX

-10°C to 85°C

MLP-24 5x5mm

Tape and Reel

FAN5078 Rev. 1.0.0 • 05/09/06

www.fairchildsemi.com

12 3 4 5 6 7...16

中文翻译

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