Datasheet > SC452MLTRT

SC452MLTRT

更新时间： 2024-11-23 21:16:31

品牌	Logo	应用领域
商升特 - SEMTECH		/
页数	文件大小	规格书
1页	257K
描述
Switching Regulator/Controller

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技术参数
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SC452MLTRT 技术参数

生命周期：	Obsolete	包装说明：	,
Reach Compliance Code：	unknown	风险等级：	5.84
Base Number Matches：	1

SC452MLTRT 数据手册

NOT RECOMMENDED FOR NEW DESIGN

SC452

Dual-Phase Single Chip

IMVP-6 Vcore Power Supply

POWER MANAGEMENT

Description

Features

The SC452 is a single chip high-performance PWM con-

troller designed to power advanced IMVP-6™ processors.

On-chip support is provided for all of the IMVP-6 require-

ments, including Active Voltage Positioning, Geyserville-3

VID transitions, VID-controlled Deeper Sleep voltage set-

ting, PSI# and DPRSL control, fast/slow C4 exit, and de-

fault Boot voltage.

ꢀ Dual-Phase Solution with Integrated Drivers

ꢀ Hysteretic Control for Fast Transient Response

ꢀ Combi-Sense Provides Loss-Less Current Sensing

ꢀ Dynamic Current Sharing

ꢀ Active Voltage Positioning

ꢀ True Differential Remote (die) Sensing

ꢀ On-Chip Support for all IMVP-6 Power Management

Features

The SC452 implements hysteretic control technology

which provides the fastest possible transient response

while avoiding the stability issues inherent to classical

PWM controllers. Semtech’s proprietary Combi-Sense®

technology provides a loss-less current sensing scheme

which is extremely robust and easy to lay out. Eliminat-

ing the sense resistors reduces costs and PCB area, plus

increases system efﬁciency. Integrated SmartDriver™

technology initially turns on the high side driver with ‘soft’

drive to reduce ringing, EMI, and capacitive turn-on of the

low side MOSFET, while also increasing overall efﬁciency.

ꢀ VID Programmed Deeper Sleep Voltage

ꢀ Fast/Slow C4E Break-Event Support

ꢀ Clock Enable (CLKEN#) Output

ꢀ Delayed Power Good Signal with Blanking

ꢀ Programmable Soft-Start and DAC Slew Control

ꢀ Programmable OCP Threshold

ꢀ Supports all Ceramic Decoupling Solutions

ꢀ 44 pin MLP (7x7)

ꢀ Lead-free Package

Hysteretic operation adaptively reduces the SC452

switching frequency at light loads. Combined with an

automatic “power-save” mode which prevents negative

current ﬂow in the low-side FET, system efﬁciency is sig-

niﬁcantly enhanced during light loading conditions. The

SC452 changes from dual-phase to single-phase opera-

tion whenever PSI# asserts, providing optimal efﬁciency

across the entire power range.

Applications

ꢀ IMVP-6/6+ Notebook PCs

ꢀ Embedded Applications

ꢀ Graphics and Other Processor Cores

A 7-bit DAC, accurate to 0.85%, sets the output voltage

reference, and implements the 0.300V to 1.500V range

required by the processor. The DAC slew rate is externally

programmed to minimize transient currents and audible

noise. True differential remote sensing provides accu-

rate point-of-load regulation at the processor die. Other

features include programmable soft-start, open-drain

IMVP6_PWRGD and CLKEN# outputs, dynamic current

sharing, over-voltage and programmable over-current pro-

tection. The SC452 is available in a space-saving 44 pin

MLP package.

February 22, 2006

www.semtech.com

中文翻译

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与SC452MLTRT相关器件

型号	品牌	获取价格	描述	数据表
SC453	SEMTECH	获取价格	Portable, VID Programmed Single Phase Power Supply Controller
SC453_09	SEMTECH	获取价格	Portable, VID Programmed Single Phase Power Supply Controller
SC4530	SEMTECH	获取价格	30V, 300mA Output Micropower Step-Down Switching Regulator
SC4530EVB	SEMTECH	获取价格	30V, 300mA Output Micropower Step-Down Switching Regulator
SC4530WLTRT	SEMTECH	获取价格	30V, 300mA Output Micropower Step-Down Switching Regulator
SC4537ULTRT	SEMTECH	获取价格	LED Driver, 1-Segment, PDSO10, 3 X 3 MM, 0.60 MM HEIGHT, ROHS COMPLIANT, MLPD-10
SC4538	SEMTECH	获取价格	High Effi ciency Boost Converter for up to 10 LEDs
SC4538_08	SEMTECH	获取价格	High Effi ciency Boost Converter for up to 10 LEDs
SC4538EVB	SEMTECH	获取价格	High Effi ciency Boost Converter for up to 10 LEDs
SC4538ULTRT	SEMTECH	获取价格	High Effi ciency Boost Converter for up to 10 LEDs

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