SNVS095F May   2004  – March 2015 LP2952-N , LP2953

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: 3.3-V Versions
    6. 6.6 Electrical Characteristics: 5-V Versions
    7. 6.7 Electrical Characteristics: All Voltage Options
    8. 6.8 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagrams
    3. 7.3 Feature Description
      1. 7.3.1 Fixed Voltage Options and Programmable Voltage Version
      2. 7.3.2 High-Accuracy Output Voltage
      3. 7.3.3 Error Detection Comparator Output
      4. 7.3.4 Auxiliary Comparator
      5. 7.3.5 Short-Circuit Protection (Current Limit)
      6. 7.3.6 Thermal Protection
      7. 7.3.7 Automatic Output Discharge
    4. 7.4 Device Functional Mode
      1. 7.4.1 Shutdown Mode
  8. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 External Capacitors
      2. 8.1.2 Minimum Load
      3. 8.1.3 Programming the Output Voltage
      4. 8.1.4 Dropout Voltage
      5. 8.1.5 Dropout Detection Comparator
      6. 8.1.6 Output Isolation
      7. 8.1.7 Reducing Output Noise
      8. 8.1.8 Auxiliary Comparator (LP2953 Only)
      9. 8.1.9 SHUTDOWN Input
    2. 8.2 Typical Applications
      1. 8.2.1 Basic 5-V Regulator
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
        3. 8.2.1.3 Application Curves
      2. 8.2.2 5-V Current Limiter with Load Fault Indicator
      3. 8.2.3 Low Temperature Coefficient Current Sink
      4. 8.2.4 5-V Regulator With Error Flags for Low Battery and Out of Regulation
      5. 8.2.5 5-V Battery Powered Supply With Backup and Low Battery Flag
      6. 8.2.6 5-V Regulator With Timed Power-On Reset
      7. 8.2.7 5-V Regulator With Snap-ON and Snap-OFF Features and Hysteresis
      8. 8.2.8 5-V Regulator With Error Flags for Low Battery and Out of Regulation With Snap-ON or Snap-OFF Output
      9. 8.2.9 5-V Regulator With Timed Power-On Reset, Snap-ON and Snap-OFF Features, and Hysteresis
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
    3. 10.3 Power Dissipation: Heatsink Requirements (Industrial Temperature Range Devices)
  11. 11Device and Documentation Support
    1. 11.1 Related Links
    2. 11.2 Trademarks
    3. 11.3 Electrostatic Discharge Caution
    4. 11.4 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

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订购信息

5 Pin Configuration and Functions

LP2952 SOIC (D) Package
16 Pins
Top View
LP2952-N LP2952A LP2953 LP2953A 01112712.png
LP2953 SOIC (D) Package
16 Pins
Top View
LP2952-N LP2952A LP2953 LP2953A 01112714.png
LP2953 PDIP (NBG) Package
16 Pins
Top View
LP2952-N LP2952A LP2953 LP2953A 01112713.png

Pin Functions LP2952-N

PIN I/O DESCRIPTION
NAME SOIC(D)
ERROR 6 O Error signal output
FEEDBACK 14 I Error amplifier noninverting input
GROUND 1, 8, 9, 16 - Ground
IN 15 I Regulator power input
NC 2, 7, 10, 11 - NC
OUT 3 O Regulated output voltage
REFERENCE 12 O Internal reference voltage output
SENSE 4 I Feedback voltage sense input
SHUTDOWN 5 I Shutdown input
VTAP 13 I Internal resistor divider input

Pin Functions LP2953

PIN I/O DESCRIPTION
NAME SOIC(D) PDIP(NBG)
COMPIN 10 15 I Auxiliary comparator input
COMPOUT 11 14 O Auxiliary comparator output
ERROR 6 10 O Error signal output
FEEDBACK 14 2 I Error amplifier noninverting input
GROUND 1, 8, 9, 16 4, 5, 12, 13 - Ground
IN 15 3 I Regulator power input
NC 2, 7 7, 11 - NC
OUT 3 6 O Regulated output voltage
REFERENCE 12 16 O Internal reference voltage output
SENSE 4 8 I Feedback voltage sense input
SHUTDOWN 5 9 I Shutdown input
VTAP 13 1 I Internal resistor divider input