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參數資料
| 型號： | LP3972SQX-5810 |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 電源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, QCC40 |
| 封裝： | 5 X 5 MM, LLP-40 |
| 文件頁數： | 1/60頁 |
| 文件大小： | 1171K |
| 代理商： | LP3972SQX-5810 |
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LP3972
August 22, 2011
Power Management Unit for Advanced Application
Processors
General Description
The LP3972 is a multi-function, programmable Power Man-
agement Unit, designed especially for advanced application
processors. The LP3972 is optimized for low power handheld
applications and provides 6 low-dropout, low-noise linear reg-
ulators, three DC/DC magnetic buck regulators, a back-up
battery charger and two GPIO’s. A high speed serial interface
is included to program individual regulator output voltages as
well as on/off control.
Key Specifications
Buck Regulators
■ Programmable V
OUT from 0.725 to 3.3V
■ Up to 95% efficiency
■ Up to 1.6A output current
■ ±3% output voltage accuracy
LDO’s
■ Programmable V
OUT of 1.0V–3.3V
■ ±3% output voltage accuracy
■ 150/300/400 mA output currents
— LDO_RTC 30 mA
— LDO1 300 mA
— LDO2 150 mA
— LDO3 150 mA
— LDO4 150 mA
— LDO5 400 mA
■ 100 mV (typ) dropout
Features
■ Compatible with advanced applications processors
requiring DVM (Dynamic Voltage Management)
■ Three buck regulators for powering high current processor
functions or I/O's
■ 6 LDO's for powering RTC, peripherals, and I/O's
■ Backup battery charger with automatic switch for lithium-
manganese coin cell batteries and Super capacitors
■ I2C compatible high speed serial interface
■ Software control of regulator functions and settings
■ Precision internal reference
■ Thermal overload protection
■ Current overload protection
■ Tiny 40-pin 5x5 mm LLP package
Applications
■ PDA phones
■ Smart phones
■ Personal Media Players
■ Digital cameras
■ Application processors
— Marvell PXA
— Freescale
— Samsung
2011 National Semiconductor Corporation
202076
www.national.com
LP3972
Power
Management
Unit
for
Advanced
Application
Processors
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| LP3972SQ-5810 | 1-CHANNEL POWER SUPPLY SUPPORT CKT, QCC40 |
| LP3972SQXE514 | 1-CHANNEL POWER SUPPLY SUPPORT CKT, QCC40 |
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相關代理商/技術參數 |
參數描述 |
|---|---|
| LP3972SQX-5810/NOPB | 功能描述:監(jiān)控電路 Pwr Mgmt Unit RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數: 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復位:Resettable 監(jiān)視器:No Watchdog 電池備用開關:No Backup 上電復位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| LP3972SQXA413 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Power Management Unit for Advanced Application Processors |
| LP3972SQX-A413 | 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 |
| LP3972SQX-A413/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 |
| LP3972SQXA514 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Power Management Unit for Advanced Application Processors |
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