SNVS684D November   2010  – March 2016

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 for 3-V LM2936Q
    6. 6.6 Electrical Characteristics for 3.3-V LM2936Q
    7. 6.7 Electrical Characteristics for 5-V LM2936Q
    8. 6.8 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 High Input Operating Voltage
      2. 7.3.2 Thermal Shutdown (TSD)
      3. 7.3.3 Short-Circuit Current Limit
      4. 7.3.4 Shutdown (SD) Pin
    4. 7.4 Device Functional Modes
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 External Capacitors
          1. 8.2.2.1.1 Minimum Capacitance
          2. 8.2.2.1.2 ESR Limits
        2. 8.2.2.2 Output Capacitor ESR
        3. 8.2.2.3 Power Dissipation
        4. 8.2.2.4 Estimating Junction Temperature
      3. 8.2.3 Application Curve
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Examples
  11. 11Device and Documentation Support
    1. 11.1 Documentation Support
      1. 11.1.1 Related Documentation
    2. 11.2 Community Resources
    3. 11.3 Trademarks
    4. 11.4 Electrostatic Discharge Caution
    5. 11.5 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

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

1 Features

  • Qualified for Automotive Applications
  • AEC Q100-Qualified With the Following Results
    • Device Temperature Grade 1: –40°C to +125°C Ambient Operating Temperature Range
  • Operating Input Voltage: 5.5 V to 40 V
  • Ultralow Quiescent Current (IQ ≤ 15 μA for IOUT = 100 μA)
  • Fixed 3-V, 3.3-V or 5-V With 50-mA Output
  • ±2% Initial Output Tolerance
  • ±3% Output Tolerance Over Line, Load, and Temperature
  • Dropout Voltage Typically 200 mV at IOUT = 50 mA
  • Reverse Battery Protection
  • –50-V Input Transient Protection
  • Internal Short Circuit Current Limit
  • Internal Thermal Shutdown Protection
  • 40-V Operating Voltage Limit
  • Shutdown Pin Available with LM2936QBM Package

2 Applications

    Automotive

3 Description

The LM2936Q ultralow quiescent-current regulator features low dropout voltage and low current in the standby mode. With less than 15-μA quiescent current at a 100-μA load, the LM2936Q is ideally suited for automotive and other battery-operated systems. The LM2936Q retains all of the features that are common to low-dropout regulators including a low dropout PNP pass device, short-circuit protection, reverse battery protection, and thermal shutdown. The LM2936Q has a 40-V maximum operating voltage limit, a −40°C to +125°C operating temperature range, and ±3% output voltage tolerance over the entire output current, input voltage, and temperature range. The LM2936Q is available in
8-pin SOIC and VSSOP packages, a 4-pin SOT–223 package, as well as a 3-pin TO-252 surface mount package.

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
LM2936Q SOIC (8) 4.90 mm × 3.91 mm
TO-252 (3) 6.10 mm × 6.58 mm
VSSOP (8) 3.00 mm × 3.00 mm
SOT-223 (4) 6.50 mm × 3.50 mm
  1. For all available packages, see the orderable addendum at the end of the data sheet.

Simplified Schematic

LM2936Q sim_sch_snvs684.gif
* Required if regulator is located more than 2 inches from power supply filter capacitor.
** Required for stability. See Electrical Characteristics for 3-V LM2936Q for required values. Must be rated over intended operating temperature range. Effective equivalent series resistance (ESR) is critical, see Typical Characteristics. Locate capacitor as close to the regulator output and ground pins as possible. Capacitance may be increased without bound.