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參數(shù)資料
| 型號(hào)： | LP3972 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | Power Management Unit for Advanced Application Processors |
| 中文描述： | 電源管理單元的高級(jí)應(yīng)用處理器 |
| 文件頁(yè)數(shù)： | 1/59頁(yè) |
| 文件大小： | 1072K |
| 代理商： | LP3972 |
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LP3972
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 hand-
held applications and provides 6 low dropout, low noise
linear regulators, 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
n
Programmable V
OUT
from 0.725 to 3.3V
n
Up to 95% efficiency
n
Up to 1.6A output current
n
±
3% output voltage accuracy
LDO’s
n
Programmable V
OUT
of 1.0V–3.3V
n
±
3% output voltage accuracy
n
150/300/400 mA output currents
— LDO RTC 30 mA
— LDO 1 300 mA
— LDO 2 150 mA
— LDO 3 150 mA
— LDO 4 150 mA
— LDO 5 400 mA
n
100 mV (typ) dropout
Features
n
Compatible with advanced applications processors
requiring DVM (Dynamic Voltage Management)
n
Three buck regulators for powering high current
processor functions or I/O’s
n
6 LDO’s for powering RTC, peripherals, and I/O’s
n
Backup battery charger with automatic switch for
lithium-manganese coin cell batteries and Super
capacitors
n
I
2
C compatible high speed serial interface
n
Software control of regulator functions and settings
n
Precision internal reference
n
Thermal overload protection
n
Current overload protection
n
Tiny 40-pin 5x5 mm LLP package
Applications
n
PDA phones
n
Smart phones
n
Personal Media Players
n
Digital cameras
n
Application processors
— Intel Xscale
— Freescale
— Samsung
September 2006
L
2006 National Semiconductor Corporation
DS202076
www.national.com
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| LP3991TLX-2.0 | 300mA Linear Voltage Regulator for Digital Applications |
| LP3991TLX-2.5 | 300mA Linear Voltage Regulator for Digital Applications |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LP3972_08 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Power Management Unit for Advanced Application Processors |
| LP3972SQ-0514/NOPB | 功能描述:PMIC 解決方案 RoHS:否 制造商:Texas Instruments 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-24 封裝:Reel |
| LP3972SQ-5810/NOPB | 功能描述:監(jiān)控電路 Pwr Mgmt Unit RoHS:否 制造商:STMicroelectronics 監(jiān)測(cè)電壓數(shù): 監(jiān)測(cè)電壓: 欠電壓閾值: 過(guò)電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開(kāi)關(guān):No Backup 上電復(fù)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(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| LP3972SQ-A413 | 功能描述:PMIC 解決方案 RoHS:否 制造商:Texas Instruments 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-24 封裝:Reel |
| LP3972SQ-A413/NOPB | 功能描述:PMIC 解決方案 RoHS:否 制造商:Texas Instruments 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-24 封裝:Reel |
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