SNVS372G August   2005  – October 2016 LM4132 , LM4132-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 LM4132-1.8 (VOUT = 1.8 V)
    6. 6.6  Electrical Characteristics LM4132-2 (VOUT = 2.048 V)
    7. 6.7  Electrical Characteristics LM4132-2.5 (VOUT = 2.5 V)
    8. 6.8  Electrical Characteristics LM4132-3 (VOUT = 3 V)
    9. 6.9  Electrical Characteristics LM4132-3.3 (VOUT = 3.3 V)
    10. 6.10 Electrical Characteristics LM4132-3.3-Q1(VOUT = 3.3 V)
    11. 6.11 Electrical Characteristics LM4132-4.1 (VOUT = 4.096 V)
    12. 6.12 Typical Characteristics
      1. 6.12.1 Typical Characteristics for 1.8 V
      2. 6.12.2 Typical Characteristics for 2.048 V
      3. 6.12.3 Typical Characteristics for 2.5 V
      4. 6.12.4 Typical Characteristics for 3 V
      5. 6.12.5 Typical Characteristics for 3.3 V
      6. 6.12.6 Typical Characteristics for 4.096 V
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Short Circuited Output
      2. 7.3.2 Turnon Time
      3. 7.3.3 Thermal Hysteresis
    4. 7.4 Device Functional Modes
  8. 8 Applications and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Applications
      1. 8.2.1 LM4132 Typical Application
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
          1. 8.2.1.2.1 Supply and Enable Voltages
          2. 8.2.1.2.2 Component Selection
          3. 8.2.1.2.3 Temperature Coefficient
          4. 8.2.1.2.4 Long-Term Stability
          5. 8.2.1.2.5 Expression of Electrical Characteristics
        3. 8.2.1.3 Application Curves
      2. 8.2.2 Other Application Circuits
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Documentation Support
      1. 11.1.1 Related Documentation
    2. 11.2 Related Links
    3. 11.3 Receiving Notification of Documentation Updates
    4. 11.4 Community Resources
    5. 11.5 Trademarks
    6. 11.6 Electrostatic Discharge Caution
    7. 11.7 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

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订购信息

1 Features

  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1: –40ºC to +125ºC Ambient Operating Temperature Range
    • Device HBM ESD Classification Level 2
  • Output Initial Voltage Accuracy: 0.05%
  • Low Temperature Coefficient: 10 ppm/°C
  • Low Supply Current: 60 µA
  • Enable Pin Allowing a 3-µA Shutdown Mode
  • 20-mA Output Current
  • Voltage Options: 1.8 V, 2.048 V, 2.5 V, 3 V,
    3.3 V, 4.096 V
  • Custom Voltage Options Available
    (1.8 V to 4.096 V)
  • VIN Range of VREF + 400 mV to 5.5 V at 10 mA
  • Stable With Low-ESR Ceramic Capacitors

2 Applications

  • Instrumentation and Process Control
  • Test Equipment
  • Data Acquisition Systems
  • Base Stations
  • Servo Systems
  • Portable, Battery-Powered Equipment
  • Automotive and Industrial
  • Precision Regulators
  • Battery Chargers
  • Communications
  • Medical Equipment

3 Description

The LM4132 family of precision voltage references performs comparable to the best laser-trimmed bipolar references, but in cost-effective CMOS technology. The key to this breakthrough is the use of EEPROM registers for correction of curvature, temperature coefficient (tempco), and accuracy on a CMOS band-gap architecture allowing package-level programming to overcome assembly shift. The shifts in voltage accuracy and tempco during assembly of die into plastic packages limit the accuracy of references trimmed with laser techniques.

Unlike other LDO references, the LM4132 can deliver up to 20 mA and does not require an output capacitor or buffer amplifier. These advantages along with the SOT-23 packaging are important for space-critical applications.

Series references provide lower power consumption than shunt references, because they do not have to idle the maximum possible load current under no-load conditions. This advantage, the low quiescent current (60 µA), and the low dropout voltage (400 mV) make the LM4132 ideal for battery-powered solutions.

The LM4132 is available in five grades (A, B, C, D and E) for greater flexibility. The best grade devices (A) have an initial accuracy of 0.05% with a specified temperature coefficient of 10 ppm/°C or less, while the lowest grade devices (E) have an initial accuracy of 0.5% and a tempco of 30 ppm/°C.

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
LM4132,
LM4132-Q1		 SOT-23 (5) 2.90 mm × 1.60 mm
  1. For all available packages, see the orderable addendum at the end of the data sheet.

Simplified Schematic

LM4132 LM4132-Q1 20151301.gif
*The capacitor CIN is required and the capacitor COUT is optional.