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Details, datasheet, quote on part number:LM3411AMX5-3.3
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| Part: | LM3411AMX5-3.3 |
| Category: | Power Management => Supervisory Circuits => System Supervisors/Reset => Supervisory Function |
| Description: | LM3411 - Precision Secondary Regulator/Driver, Package: SOT-23, Pin Nb=5 |
| Company: | National Semiconductor Corporation |
| Datasheet: | Download LM3411AMX5-3.3 datasheet File size : 353 kB |
| Request For quote: | Find where to buy LM3411AMX5-3.3
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Datasheet text preview:
LM3411 Precision Secondary Regulator/Driver
July 2000
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 voltage setting resistors. A trimmed precision bandgap reference with temperature drift curvature correction, provides a guaranteed 1% precision 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 regulation 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
DS011987-1
Basic Isolated DC/DC Converter
DS011987-2
LM3411 Functional Diagram
SIMPLE SWITCHERTM is a tradmark of National Semiconductor Corporation.
© 2000 National Semiconductor Corporation
DS011987
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LM3411
Connection Diagrams and Order Information
5-Lead Small Outline Package (M5) Actual Size
DS011987-4
DS011987-3
*No internal connection, but should be soldered to PC board for best heat transfer.
Top View For Ordering Information See Figure 1 in this Data Sheet See NS Package Number MF05A
Five Lead Surface Mount Package Marking and Order Information (SOT23-5)
The small SOT23-5 package allows only 4 alphanumeric characters to identify the product. The table below contains the field information marked on the package. Order Information LM3411AM5-3.3 LM3411AM5X-3.3 LM3411M5-3.3 LM3411M5X-3.3 LM3411AM5-5.0 LM3411AM5X-5.0 LM3411M5-5.0 LM3411M5X-5.0 Package Marking D00A D00A D00B D00B D01A D01A D01B D01B
Grade 3.3V 3.3V 3.3V 3.3V 5.0V 5.0V 5.0V 5.0V A (Prime) A (Prime) B (Standard) B (Standard) A (Prime) A (Prime) B (Standard) B (Standard)
Supplied as 1000 unit increments on tape and reel 3000 unit increments on tape and reel 1000 unit increments on tape and reel 3000 unit increments on tape and reel 1000 unit increments on tape and reel 3000 unit increments on tape and reel 1000 unit increments on tape and reel 3000 unit increments on tape and reel
FIGURE 1. SOT23-5 Marking and Order Information The first letter "D" identifies the part as a Driver, the next two numbers indicate the voltage, "00" for 3.3V part and "01" for a 5V part. The fourth letter indicates the grade, "B" for standard grade, "A" for the prime grade. The SOT23-5 surface mount package is only available on tape in quantities increments of 250 on tape and reel (indicated by the letters "M5" in the part number), or in quantities increments of 3000 on tape and reel (indicated by the letters "M5X" in the part number).
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LM3411
Absolute Maximum Ratings (Note 1)
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 (TA = 25°C) (Note 2) 20V 20 mA 150°C -65°C to +150°C +215°C +220°C 300 mW
ESD Susceptibility (Note 3) Human Body Model 1500V See AN-450 "Surface Mounting Methods and Their Effect on Product Reliability" for methods on soldering surface-mount devices.
Operating Ratings (Notes 1, 2)
Ambient Temperature Range Junction Temperature Range Output Current -40°C TA +85°C -40°C TJ +125°C 15 mA
LM3411-3.3 Electrical Characteristics
Specifications with standard type face are for TJ = 25°C, and those with boldface type apply over full Operating Temperature Range. Unless otherwise specified, V(IN) = VREG, VOUT = 1.5V. Symbol Parameter Conditions Typical (Note 4) VREG Regulation Voltage IOUT = 5 mA 3.3 3.317/3.333 3.284/3.267 Regulation Voltage Tolerance Iq Gm Quiescent Current Transconductance IOUT/VREG 1 mA IOUT 15 mA AV Voltage Gain VOUT/VREG 1V VOUT VREG - 1.2V (-1.3) RL = 140 (Note 6) 1V VOUT VREG - 1.2V (-1.3) R L = 2 k VSAT IL Rf Output Saturation (Note 7) Output Leakage Current Internal Feedback Resistor (Note 8) En Output Noise Voltage IOUT = 1 mA, 10 Hz f 10 kHz 50 V(IN) = VREG +100 mV IOUT = 15 mA V(IN) = VREG -100 mV VOUT = 0V 52 65 39 65 39 0.1 0.5/1.0 0.5/1.0 1.0 1.2/1.3 1.2/1.3 3500 1500/900 1000/700 6.0 3.3/2.0 1000 550/250 450/200 2.5/1.7 IOUT = 5 mA 20 µA IOUT 1 mA 85 110/115 3.3 1.5/0.75 1/0.50 125/150 µA µA(max) mA/mV mA/mV(min) mA/mV mA/mV(min) V/V V/V(min) V/V V/V(min) V V(max) µA µA(max) k k(max) k(min) µVRMS IOUT = 5 mA 3.333/3.366 3.267/3.234 LM3411A-3.3 Limit (Note 5) LM3411-3.3 Limit (Note 5) V V(max) V(min) %(max) Units (Limits)
± 0.5/ ± 1
± 1/ ± 2
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