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參數資料
| 型號： | SC454 |
| 廠商： | Semtech Corporation |
| 英文描述： | Single-Phase Single Chip IMVP-6/6+ Vcore Power Supply |
| 中文描述： | 單相單芯片IMVP的- 6 / 6 Vcore電源供應 |
| 文件頁數： | 1/1頁 |
| 文件大小： | 66K |
| 代理商： | SC454 |
www.semtech.com
1
POWER MANAGEMENT
Description
SC454
Single-Phase Single Chip
IMVP-6/6+ Vcore Power Supply
March 20, 2006
Applications
Features
The SC454 is a single-phase chip, high-performance PWM
controller designed to power advanced IMVP-6 and IMVP6+
processors. On-chip support is provided for all of the
IMVP-6/6+ requirements, including Active Voltage Position-
ing, Geyserville-3 VID transitions, VID-Controlled Deeper
Sleep voltage setting, PSI#, DPRSTP#, DPRSLP Control,
Fast and Slow C4 Exit, and default Boot Voltage.
The SC454 implements hysteretic control technology which
provides the fastest possible transient response while
avoiding the stability issues inherent to classical PWM
controllers. Eliminating the sense resistors reduces costs
and PCB area, plus increases system ef
fi
ciency. Integrated
SmartDriver technology initially turns on the high-side
driver with ‘soft’ drive to reduce ringing, EMI, and capaci-
tive turn-on of the low side MOSFET, while also increasing
overall ef
fi
ciency.
Hysteretic operation adaptively reduces the SC454 switch-
ing frequency at light loads. Combined with an automatic
“power-save” mode which prevents negative current
fl
ow in
the low-side FET, system ef
fi
ciency is signi
fi
cantly enhanced
during light loading conditions.
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 accurate
point-of-load regulation at the processor die. Other features
include programmable soft-start, open-drain IMVP-6/6+
PWRGD and CLKEN# outputs, dynamic current sharing,
over-voltage and programmable over-current protection.
The SC454 is available in a space-saving 32-pin MLP
package.
Single-Phase Solution with Integrated Drivers
Hysteretic Control for Fast Transient Response
VR_TT Support
Active Voltage Positioning
True Differential Remote (die) Sensing
On-Chip Support for all IMVP-6/6+ Power
Management Features
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
32-pin MLP (5x5)
Latched Over-Voltage Protection
IMVP-6/6+ Notebook PCs
Embedded Applications
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相關代理商/技術參數 |
參數描述 |
|---|---|
| SC454_09 | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:Single-Phase Single Chip IMVP-6/6+ Vcore Power Supply |
| SC4540 | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:High Effi ciency Boost Converter for up to 10 LEDs |
| SC4540EVB | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:High Effi ciency Boost Converter for up to 10 LEDs |
| SC4540ULTRT | 功能描述:IC LED DRIVR CONST CURRENT 8MLPD RoHS:是 類別:集成電路 (IC) >> PMIC - LED 驅動器 系列:- 標準包裝:60 系列:- 恒定電流:- 恒定電壓:- 拓撲:線性（LDO），PWM，升壓（升壓） 輸出數:8 內部驅動器:是 類型 - 主要:背光 類型 - 次要:RGB，白色 LED 頻率:500kHz ~ 1.5MHz 電源電壓:4.75 V ~ 26 V 輸出電壓:45V 安裝類型:* 封裝/外殼:* 供應商設備封裝:* 包裝:* 工作溫度:-40°C ~ 85°C |
| SC4541SKTRT | 功能描述:IC LED DRVR BACKLIGHT SOT23-6 RoHS:是 類別:集成電路 (IC) >> PMIC - LED 驅動器 系列:- 標準包裝:60 系列:- 恒定電流:- 恒定電壓:- 拓撲:線性（LDO），PWM，升壓（升壓） 輸出數:8 內部驅動器:是 類型 - 主要:背光 類型 - 次要:RGB，白色 LED 頻率:500kHz ~ 1.5MHz 電源電壓:4.75 V ~ 26 V 輸出電壓:45V 安裝類型:* 封裝/外殼:* 供應商設備封裝:* 包裝:* 工作溫度:-40°C ~ 85°C |
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