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參數資料
| 型號： | LP3971SQX-B410 |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 電源管理 |
| 英文描述： | POWER MANAGEMENT UNIT FOR ADVANCED APPLICATION PROCESSORS |
| 中文描述： | 3-CHANNEL POWER SUPPLY SUPPORT CKT, PQCC40 |
| 封裝： | 5 X 5 MM, LLP-40 |
| 文件頁數： | 1/42頁 |
| 文件大小： | 1350K |
| 代理商： | LP3971SQX-B410 |
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LP3971
Power Management Unit for Advanced Application
Processors
General Description
The LP3971 is a multi-function, programmable Power Man-
agement Unit, designed especially for advanced application
processors. The LP3971 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 0.8 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
150/300/370 mA output currents
— LDO RTC 30 mA
— LDO 1 300 mA
— LDO 2 150 mA
— LDO 3 150 mA
— LDO 4 150 mA
— LDO 5 370 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
January 2006
L
2006 National Semiconductor Corporation
DS201807
www.national.com
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| LP3994LD-1.5 | 50mA CMOS Voltage Regulator with Enable Control |
| LP3994LD-1.8 | 50mA CMOS Voltage Regulator with Enable Control |
| LP3994LDX-1.5 | 50mA CMOS Voltage Regulator with Enable Control |
| LP3994LDX-1.8 | 50mA CMOS Voltage Regulator with Enable Control |
相關代理商/技術參數 |
參數描述 |
|---|---|
| LP3971SQX-B410/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 |
| LP3971SQX-B510/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 |
| LP3971SQX-D510 | 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 |
| LP3971SQX-D510/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 |
| LP3971SQX-F211 | 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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