LM3411AM5-5.0 National Semiconductor, LM3411AM5-5.0 Datasheet

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LM3411AM5-5.0

Manufacturer Part Number
LM3411AM5-5.0
Description
IC REG/DRIVER SECONDARY SOT23-5
Manufacturer
National Semiconductor
Datasheet

Specifications of LM3411AM5-5.0

Reference Type
Shunt
Voltage - Output
5V
Tolerance
±0.5%
Number Of Channels
1
Current - Cathode
110µA
Current - Output
15mA
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
SC-74A, SOT-753
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Voltage - Input
-
Temperature Coefficient
-
Current - Quiescent
-
Other names
LM3411AM5-5.0TR

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Company
Part Number
Manufacturer
Quantity
Price
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Manufacturer:
NSC
Quantity:
5 865
Part Number:
LM3411AM5-5.0/NOPB
Manufacturer:
TI/德州仪器
Quantity:
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Company:
Part Number:
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© 2005 National Semiconductor Corporation
LM3411
Precision Secondary Regulator/Driver
General Description
The LM3411 is a low power fixed-voltage (3.3V or 5.0V)
precision shunt regulator designed specifically for driving an
optoisolator to provide feedback isolation in a switching
regulator.
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 (A grade 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
critical 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
Typical Application and Functional Diagram
SIMPLE SWITCHER
is a tradmark of National Semiconductor Corporation.
DS011987
Basic Isolated DC/DC Converter
LM3411 Functional Diagram
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
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
Applications
n Secondary controller for isolated DC/DC PWM switching
n Use with LDO regulator for high-precision fixed output
n Precision monitoring applications
n Use with many types of regulators to increase precision
(tape and reel)
regulators systems
regulators
and improve performance
±
1% for standard grade and
01198702
01198701
±
0.5% for A grade
www.national.com
March 2005

Related parts for LM3411AM5-5.0

LM3411AM5-5.0 Summary of contents

Page 1

... DC/DC converters, it can also be used with Typical Application and Functional Diagram SIMPLE SWITCHER ™ tradmark of National Semiconductor Corporation. © 2005 National Semiconductor Corporation other types of voltage regulators or power semiconductors to provide a precision output voltage without precision resistors or trimming. ...

Page 2

... Package Marking LM3411AM5-3.3 D00A LM3411AM5X-3.3 D00A LM3411M5-3.3 D00B LM3411M5X-3.3 D00B LM3411AM5-5.0 D01A LM3411AM5X-5.0 D01A LM3411M5-5.0 D01B LM3411M5X-5.0 D01B FIGURE 1. SOT23-5 Marking and Order Information cated by the letters “M5” in the part number quantities increments of 3000 on tape and reel (indicated by the letters “ ...

Page 3

... Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Input Voltage V(IN) Output Current Junction Temperature Storage Temperature Lead Temperature Vapor Phase (60 sec.) Infrared (15 sec.) Power Dissipation (T = 25˚C) (Note ...

Page 4

LM3411-5.0 Electrical Characteristics Specifications with standard type face are for T ture Range. Unless otherwise specified, V(IN Symbol Parameter V Regulation Voltage I REG OUT Regulation Voltage I OUT Tolerance I Quiescent Current I q OUT 20 µA ...

Page 5

Typical Performance Characteristics Normalized Temperature Drift Output Saturation Voltage (V) SAT Bode Plot 01198730 Circuit Used for Bode Plots 01198732 01198733 5 Quiescent Current 01198731 01198708 Bode Plot 01198734 www.national.com ...

Page 6

Typical Performance Characteristics Bold Plot Response Time for 3.3V Version ( nF) C Response Time for 5V Version ( pF) C www.national.com (Continued) 01198744 Circuit Used for Response Time 01198736 01198737 6 Response Time for 3.3V ...

Page 7

Typical Performance Characteristics Tempco of Internal Feedback Resistor (Rf) Regulation Voltage vs Output Voltage and Load Resistance (Continued) 01198739 01198741 7 Regulation Voltage Change vs Output Current 01198740 Regulation Voltage vs Output Voltage and Load Resistance 01198742 www.national.com ...

Page 8

Product Description The LM3411 is a shunt regulator specifically designed to be the reference and control section in an overall feedback loop of a regulated power supply. The regulated output voltage is sensed between the IN pin and GROUND pin ...

Page 9

Applications Information FIGURE 3. Isolated 250 mA Flyback Switching Regulator FIGURE 4. Isolated 1.5A Flyback Switching Regulator Using a LM2577 The LM3411 regulator/driver provides the reference and feedback drive functions in a regulated power supply. It can also be used ...

Page 10

Applications Information The output of a switching regulator typically will contain a small ripple voltage at the switching frequency and may also contain voltage transients. These transient voltage spikes can be sensed by the LM3411 and could give an incorrect ...

Page 11

Applications Information FIGURE 7. Precision 5V 1A Low Dropout Regulator FIGURE 8. 3.3V 0.5A Low Dropout Regulator The circuit in Figure 8 shows a 3.3V low dropout regulator using the LM3411-3.3 and several discrete components. This circuit is capable of ...

Page 12

Applications Information limit feature as shown in Figure 11. Current limit tolerances ± over manufacturing and temperature variations are possible with this circuit. FIGURE 10. Precision Negative Voltage Regulator FIGURE 11. Precision Negative Voltage Regulator with Accurate Current ...

Page 13

Applications Information Schematic Diagram (Continued) 01198728 FIGURE 16. Overvoltage Crowbar 13 01198729 www.national.com ...

Page 14

... Deutsch Tel: +49 (0) 69 9508 6208 English www.national.com Français Tel: +33 ( 8790 5-Lead Small Outline Package (M5) LM3411M5-5.0 or LM3411AM5-5.0 NS Package Number MF05A 2. A critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system affect its safety or effectiveness ...

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