DataSheet.jp

LP38841 の電気的特性と機能

LP38841のメーカーはNational Semiconductorです、この部品の機能は「0.8A Ultra Low Dropout Linear Regulators Stable with Ceramic Output Capacitors」です。


製品の詳細 ( Datasheet PDF )

部品番号 LP38841
部品説明 0.8A Ultra Low Dropout Linear Regulators Stable with Ceramic Output Capacitors
メーカ National Semiconductor
ロゴ National Semiconductor ロゴ 




このページの下部にプレビューとLP38841ダウンロード(pdfファイル)リンクがあります。

Total 10 pages

No Preview Available !

LP38841 Datasheet, LP38841 PDF,ピン配置, 機能
December 2004
LP38841
0.8A Ultra Low Dropout Linear Regulators
Stable with Ceramic Output Capacitors
General Description
The LP38841 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: 75 mV (typ) @ 0.8A load current.
Quiescent Current: 30 mA (typ) at full load.
Shutdown Current: 30 nA (typ) when S/D pin is low.
Precision Output Voltage: 1.5% room temperature accu-
racy.
Features
n Ideal for conversion from 1.8V or 1.5V inputs
n Designed for use with low ESR ceramic capacitors
n 0.8V, 1.2V and 1.5V standard voltages available
n Ultra low dropout voltage (75mV @ 0.8A typ)
n 1.5% initial output accuracy
n Load regulation of 0.1%/A (typical)
n 30nA quiescent current in shutdown (typical)
n Low ground pin current at all loads
n Over temperature/over current protection
n Available in 5 lead TO220 and TO263 packages
n −40˚C to +125˚C junction temperature range
Applications
n ASIC Power Supplies In:
- Desktops, Notebooks, and Graphics Cards, Servers
- Gaming Set Top Boxes, Printers and Copiers
n Server Core and I/O Supplies
n DSP and FPGA Power Supplies
n SMPS Post-Regulator
Typical Application Circuit
* Minimum value required if Tantalum capacitor is used (see Application Hints).
20102801
© 2004 National Semiconductor Corporation DS201028
www.national.com

1 Page





LP38841 pdf, ピン配列
Block Diagram
20102824
3 www.national.com


3Pages


LP38841 電子部品, 半導体
Typical Performance Characteristics Unless otherwise specified: TJ = 25˚C, CIN = 10 µF CER,
COUT = 22 µF CER, CBIAS = 1 µF CER,S/D Pin is tied to VBIAS, VOUT = 1.2V, IL = 10mA, VBIAS = 5V, VIN = VOUT + 1V.
VBIAS Transient Response
Dropout Voltage Over Temperature
VOUT vs Temperature
20102836
VBIAS PSRR
20102839
VBIAS PSRR
20102840
VIN PSRR
20102841
www.national.com
20102851
6
20102842

6 Page



ページ 合計 : 10 ページ
 
PDF
ダウンロード
[ LP38841 データシート.PDF ]


データシートを活用すると、その部品の主な機能と仕様を詳しく理解できます。 ピン構成、電気的特性、動作パラメータ、性能を確認してください。


共有リンク

Link :


部品番号部品説明メーカ
LP38841

LP38841 0.8A Ultra Low Dropout Linear Regs Stable w/Ceramic Output Caps (Rev. C)

Texas Instruments
Texas Instruments
LP38841

0.8A Ultra Low Dropout Linear Regulators Stable with Ceramic Output Capacitors

National Semiconductor
National Semiconductor
LP38841-ADJ

LP38841-ADJ 0.8A Ultra Low Drpout Adj Lnr Reg Stable w/Ceramic Output Caps (Rev. C)

Texas Instruments
Texas Instruments
LP38841-ADJ

Ultra Low Dropout Adjustable Linear Regulators Stable

National Semiconductor
National Semiconductor


www.DataSheet.jp    |   2020   |  メール    |   最新    |   Sitemap