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參數資料
| 型號： | LP3882ET-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, PSFM5 |
| 封裝： | TO-220, 5 PIN |
| 文件頁數： | 1/12頁 |
| 文件大?。?/td> | 326K |
| 代理商： | LP3882ET-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
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| LP3892 | 1.5A Fast-Response Ultra Low Dropout Linear Regulators |
| LP3892ESX-1.2 | 1.5A Fast-Response Ultra Low Dropout Linear Regulators |
| LP3892ESX-1.5 | 1.5A Fast-Response Ultra Low Dropout Linear Regulators |
| LP3892ES-1.2 | 1.5A Fast-Response Ultra Low Dropout Linear Regulators |
相關代理商/技術參數 |
參數描述 |
|---|---|
| LP3883 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:3A Fast-Response Ultra Low Dropout Linear Regulators |
| LP3883ES-1.2 | 功能描述:低壓差穩(wěn)壓器 - LDO RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調節(jié):0.3 % 輸出端數量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| LP3883ES-1.2 | 制造商:Texas Instruments 功能描述:ICVOLT REGULATORFIXED ((NW)) |
| LP3883ES-1.2/NOPB | 功能描述:低壓差穩(wěn)壓器 - LDO High Performance Dual-Rail LDO RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調節(jié):0.3 % 輸出端數量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| LP3883ES-1.5 | 功能描述:低壓差穩(wěn)壓器 - LDO RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調節(jié):0.3 % 輸出端數量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
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