SNOS455G May   2000  – September 2015 LM4050-N , LM4050-N-Q1

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 6 Specifications
    1. 6.1  Absolute Maximum Ratings
    2. 6.2  ESD Ratings
    3. 6.3  Recommended Operating Conditions
    4. 6.4  Thermal Information
    5. 6.5  Electrical Characteristics: 2-V Option
    6. 6.6  Electrical Characteristics: 2.5-V Option
    7. 6.7  Electrical Characteristics: 4.1-V Option
    8. 6.8  Electrical Characteristics: 5-V Option
    9. 6.9  Electrical Characteristics: 8.2-V Option
    10. 6.10 Electrical Characteristics: 10-V Option
    11. 6.11 Typical Characteristics
      1. 6.11.1 Start-Up Characteristics
  7. 7 Parameter Measurement Information
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
    4. 8.4 Device Functional Modes
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Applications
      1. 9.2.1 Shunt Regulator
        1. 9.2.1.1 Design Requirements
        2. 9.2.1.2 Detailed Design Procedure
        3. 9.2.1.3 Application Curve
      2. 9.2.2 Precision Reference for an Analog-to-Digital Converter
        1. 9.2.2.1 Design Requirements
        2. 9.2.2.2 Detailed Design Procedure
      3. 9.2.3 VOUT Bounded Amplifier
        1. 9.2.3.1 Design Requirements
        2. 9.2.3.2 Detailed Design Procedure
      4. 9.2.4 VIN Bounded Amplifier
        1. 9.2.4.1 Design Requirements
        2. 9.2.4.2 Detailed Design Procedure
      5. 9.2.5 ±4.096 Precision Reference
        1. 9.2.5.1 Design Requirements
        2. 9.2.5.2 Detailed Design Procedure
      6. 9.2.6 ±1-mA Precision Current Sources
        1. 9.2.6.1 Design Requirements
        2. 9.2.6.2 Detailed Design Procedure
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Related Links
    2. 12.2 Community Resources
    3. 12.3 Trademarks
    4. 12.4 Electrostatic Discharge Caution
    5. 12.5 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

1 Features

  • Small Package: SOT-23
  • No Output Capacitor Required
  • Tolerates Capacitive Loads
  • Fixed Reverse Breakdown Voltages of 2.048 V, 2.5 V, 4.096 V, 5 V, 8.192 V, and 10 V
  • Key Specifications (LM4050-N)
    • Output Voltage Tolerance (A Grade, 25°C) ±0.1% (Maximum)
    • Low Output Noise (10 Hz to 10 kHz) 41 μVrms (Typical)
    • Wide Operating Current Range 60 μA to 15 mA
    • Industrial Temperature Range −40°C to 85°C
    • Extended Temperature Range −40°C to 125°C
    • Low Temperature Coefficient 50 ppm/°C (max)
    • LM4050-N-Q1 is AEC-Q100 Grade 1 Qualified and are Manufactured on an Automotive Grade Flow

2 Applications

  • Portable, Battery-Powered Equipment
  • Data Acquisition Systems
  • Instrumentation
  • Process Control
  • Energy Management
  • Product Testing
  • Automotive
  • Precision Audio Components

3 Description

Ideal for space-critical applications, the LM4050-N precision voltage reference is available in the sub-miniature (3 mm × 1.3 mm) SOT-23 surface-mount package. The LM4050-N design eliminates the need for an external stabilizing capacitor while ensuring stability with any capacitive load, thus making the LM4050-N easy to use. Further reducing design effort is the availability of several fixed reverse breakdown voltages: 2.048 V, 2.5 V, 4.096 V, 5 V, 8.192 V, and 10 V. The minimum operating current increases from 60 μA for the LM4050-N-2.0 to 100 μA for the LM4050-N-10.0. All versions have a maximum operating current of 15 mA.

The LM4050-N utilizes fuse and Zener-zap reverse breakdown voltage trim during wafer sort to ensure that the prime parts have an accuracy of better than ±0.1% (A grade) at 25°C. Bandgap reference temperature drift curvature correction and low dynamic impedance ensure stable reverse breakdown voltage accuracy over a wide range of operating temperatures and currents.

All grades and voltage options of the LM4050-N are available in both an industrial temperature range (−40°C and 85°C) and an extended temperature range (−40°C and 125°C).

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
LM4050-N SOT-23 (3) 2.92 mm × 1.30 mm
LM4050-N-Q1
  1. For all available packages, see the orderable addendum at the end of the data sheet.

Shunt Regulator Schematic

LM4050-N LM4050-N-Q1 shunt_regulator_schem_snos455.gif