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參數資料
| 型號： | LP5551 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | PowerWise⑩ Technology Compliant Energy Management Unit |
| 中文描述： | ⑩技術兼容的PowerWise能源管理單元 |
| 文件頁數： | 1/32頁 |
| 文件大小： | 3081K |
| 代理商： | LP5551 |
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December 2006
LP5551
PowerWise Technology Compliant Energy Management
Unit
General Description
The LP5551 is a PWI 1.0 compliant Energy Management
System for reducing power consumption of stand-alone mo-
bile phone processors such as base-band or applications
processors.
The LP5551 contains two advanced, digitally controlled
switching regulators for supplying variable voltage to proces-
sor core and memory. Two regulators provide P- and N- well
biasing for threshold scaling applications. The device also in-
tegrates 4 programmable LDO-regulators for powering I/O,
PLLs and maintaining memory retention in shutdown-mode.
The device is controlled via the PWI open-standard interface.
The LP5551 operates cooperatively with PowerWise tech-
nology compatible processors to optimize supply voltages
adaptively over process and temperature variations or dy-
namically using frequency/voltage pre-characterized look-up
tables and provides P- and N-well biasing for threshold scal-
ing.
Features
■
2 300 mA buck regulators operate 180 degrees out of
phase for reduced EMI
■
1 MHz PWM switching frequency
■
4 programmable LDOs ideal for I/O (two of these), PLL,
and memory retention supply generation.
■
Supports high-efficiency PowerWise Technology
Adaptive Voltage Scaling
■
PWI open standard interface for system power
management
■
Digitally controlled intelligent voltage scaling
■
Auto or PWI controlled PFM mode transition
■
Internal soft start/startup sequencing.
■
Adjustable P- and N- well bias supply for threshold scaling
■
Power OK output.
Applications
■
Dual core processors
■
GSM/GPRS/EDGE & UMTS cellular handsets
■
Hand-held radios
■
PDAs
■
Battery powered devices
■
Portable instruments
System Diagram
20172163
FIGURE 1. System Diagram
2007 National Semiconductor Corporation
201721
www.national.com
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相關PDF資料 |
PDF描述 |
|---|---|
| LP5551SQ | PowerWise⑩ Technology Compliant Energy Management Unit |
| LP5551SQX | PowerWise⑩ Technology Compliant Energy Management Unit |
| LPBC4-3 | POWR-BLOKS Distribution/Splicer Blocks and Covers |
| LPBC5-1 | POWR-BLOKS Distribution/Splicer Blocks and Covers |
| LPBC5-2 | POWR-BLOKS Distribution/Splicer Blocks and Covers |
相關代理商/技術參數 |
參數描述 |
|---|---|
| LP5551SQ | 功能描述:PMIC 解決方案 RoHS:否 制造商:Texas Instruments 安裝風格:SMD/SMT 封裝 / 箱體:QFN-24 封裝:Reel |
| LP5551SQ/NOPB | 功能描述:PMIC 解決方案 RoHS:否 制造商:Texas Instruments 安裝風格:SMD/SMT 封裝 / 箱體:QFN-24 封裝:Reel |
| LP5551SQEV | 功能描述:電源管理IC開發工具 LP5551SQ EVAL BRD RoHS:否 制造商:Maxim Integrated 產品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| LP5551SQX | 功能描述:PMIC 解決方案 RoHS:否 制造商:Texas Instruments 安裝風格:SMD/SMT 封裝 / 箱體:QFN-24 封裝:Reel |
| LP5551SQX/NOPB | 功能描述:PMIC 解決方案 RoHS:否 制造商:Texas Instruments 安裝風格:SMD/SMT 封裝 / 箱體:QFN-24 封裝:Reel |
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