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參數(shù)資料
| 型號： | LM3411M5X-5.0 |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | Precision Secondary Regulator/Driver |
| 中文描述： | 1-OUTPUT THREE TERM VOLTAGE REFERENCE, 5 V, PDSO5 |
| 封裝： | SOT-23, SOP-5 |
| 文件頁數(shù)： | 1/13頁 |
| 文件大?。?/td> | 350K |
| 代理商： | LM3411M5X-5.0 |
LM3411
Precision Secondary Regulator/Driver
General Description
The LM3411 is a low power fixed-voltage (3.3V or 5.0V) pre-
cision shunt regulator designed specifically for driving an op-
toisolator to provide feedback isolation in a switching regula-
tor.
The LM3411 circuitry includes an internally compensated op
amp, a bandgap reference, NPN output transistor, and volt-
age setting resistors.
A trimmed precision bandgap reference with temperature
drift curvature correction, provides a guaranteed 1% preci-
sion over the operating temperature range (Agrade version).
The amplifier’s inverting input is externally accessible for
loop frequency compensation when used as part of a larger
servo system. The output is an open-emitter NPN transistor
capable of driving up to 15 mA of load current.
Because of its small die size, the LM3411 has been made
available in the sub-miniature 5-lead SOT23-5 surface
mount package. This package is ideal for use in space criti-
cal applications.
Although its main application is to provide a precision output
voltage (no trimming required) and maintain very good regu-
lation in isolated DC/DC converters, it can also be used with
other types of voltage regulators or power semiconductors to
provide a precision output voltage without precision resistors
or trimming.
Features
n
Fixed voltages of 3.3V and 5.0V with initial tolerance of
±
1% for standard grade and
±
0.5% for A grade
n
Custom voltages available (3V–17V)
n
Wide output current range, 20 μA–15 mA
n
Low temperature coefficient
n
Available in 5-lead SOT23-5 surface mount package
(tape and reel)
Applications
n
Secondary controller for isolated DC/DC PWM switching
regulators systems
n
Use with LDO regulator for high-precision fixed output
regulators
n
Precision monitoring applications
n
Use with many types of regulators to increase precision
and improve performance
Typical Application and Functional Diagram
SIMPLE SWITCHER
is a tradmark of National Semiconductor Corporation.
DS011987-1
Basic Isolated DC/DC Converter
DS011987-2
LM3411 Functional Diagram
December 1999
L
1999 National Semiconductor Corporation
DS011987
www.national.com
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| LM3411N-3.3 | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Texas Instruments 功能描述: |
| LM3411N-5.0 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| LM3414 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:1A 60W Common Anode Capable Constant Current Buck LED Driver Requires No |
| LM3414HV | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:1A 65V LED Driver Evaluation Board Switching frequency: 500 kHz |
| LM3414HVMR | 制造商:TI 制造商全稱:Texas Instruments 功能描述:1A 60W Common Anode Capable Constant Current Buck LED Driver Requires No |
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