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參數資料
型號: LP3882ESX-1.8
廠商: NATIONAL SEMICONDUCTOR CORP
元件分類: 基準電壓源/電流源
英文描述: 1.5A Fast-Response Ultra Low Dropout Linear
中文描述: 1.8 V FIXED POSITIVE LDO REGULATOR, 0.27 V DROPOUT, PSSO5
封裝: TO-263, 5 PIN
文件頁數: 1/12頁
文件大小: 326K
代理商: LP3882ESX-1.8
LP3882
1.5A Fast-Response Ultra Low Dropout Linear
Regulators
General Description
The LP3882 is a high current, fast response regulator which
can maintain output voltage regulation with minimum input to
output voltage drop. Fabricated on a CMOS process, the
device operates from two input voltages: Vbias provides
voltage to drive the gate of the N-MOS power transistor,
while Vin is the input voltage which supplies power to the
load. The use of an external bias rail allows the part to
operate from ultra low Vin voltages. Unlike bipolar regula-
tors, the CMOS architecture consumes extremely low quies-
cent current at any output load current. The use of an
N-MOS power transistor results in wide bandwidth, yet mini-
mum external capacitance is required to maintain loop sta-
bility.
The fast transient response of these devices makes them
suitable for use in powering DSP, Microcontroller Core volt-
ages and Switch Mode Power Supply post regulators. The
parts are available in TO-220 and TO-263 packages.
Dropout Voltage:
110 mV (typ)
@
1.5A load current.
Ground Pin Current:
3 mA (typ) at full load.
Shutdown Current:
60 nA (typ) when S/D pin is low.
Precision Output Voltage:
1.5% room temperature accu-
racy.
Features
n
Ultra low dropout voltage (110 mV
@
1.5A typ)
n
Low ground pin current
n
Load regulation of 0.04%/A
n
60 nA typical quiescent current in shutdown
n
1.5% output accuracy (25C)
n
TO-220, TO-263 packages
n
Over temperature/over current protection
n
40C to +125C junction temperature range
Applications
n
DSP Power Supplies
n
Server Core and I/O Supplies
n
PC Add-in-Cards
n
Local Regulators in Set-Top Boxes
n
Microcontroller Power Supplies
n
High Efficiency Power Supplies
n
SMPS Post-Regulators
Typical Application Circuit
20063201
At least 4.7 μF of input and output capacitance is required for stability.
Connection Diagrams
20063202
TO-220, Top View
20063203
TO-263, Top View
August 2003
L
2003 National Semiconductor Corporation
DS200632
www.national.com
相關PDF資料
PDF描述
LP3882 1.5A Fast-Response Ultra Low Dropout Linear
LP3882ES-1.2 1.5A Fast-Response Ultra Low Dropout Linear
LP3882ES-1.5 1.5A Fast-Response Ultra Low Dropout Linear
LP3882ES-1.8 1.5A Fast-Response Ultra Low Dropout Linear
LP3882ET-1.2 1.5A Fast-Response Ultra Low Dropout Linear
相關代理商/技術參數
參數描述
LP3882ET-1.2 制造商:Texas Instruments 功能描述:V REG LDO 1.5A +1.2V 3882 TO2205
LP3882ET-1.2/NOPB 功能描述:IC REG LDO 1.2V 1.5A TO-220-5 RoHS:是 類別:集成電路 (IC) >> PMIC - 穩壓器 - 線性 系列:- 標準包裝:1 系列:- 穩壓器拓撲結構:正,固定式 輸出電壓:4V 輸入電壓:最高 16V 電壓 - 壓降(標準):0.28V @ 150mA 穩壓器數量:1 電流 - 輸出:150mA 電流 - 限制(最小):- 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:5-VFBGA 供應商設備封裝:5-uSMD 包裝:Digi-Reel® 其它名稱:LP2985AIBP-4.0DKR
LP3882ET-1.5 制造商:Texas Instruments 功能描述:V REG LDO 1.5A +1.5V 3882 TO2205
LP3882ET-1.5/NOPB 功能描述:IC REG LDO 1.5V 1.5A TO220-5 RoHS:是 類別:集成電路 (IC) >> PMIC - 穩壓器 - 線性 系列:- 標準包裝:1 系列:- 穩壓器拓撲結構:正,固定式 輸出電壓:4V 輸入電壓:最高 16V 電壓 - 壓降(標準):0.28V @ 150mA 穩壓器數量:1 電流 - 輸出:150mA 電流 - 限制(最小):- 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:5-VFBGA 供應商設備封裝:5-uSMD 包裝:Digi-Reel® 其它名稱:LP2985AIBP-4.0DKR
LP3882ET-1.8 制造商:Texas Instruments 功能描述:V REG LDO 1.5A +1.8V 3882 TO2205
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