SLVSAW6H June   2011  – November 2024 LP2951-Q1

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Thermal Information
    5. 5.5 Electrical Characteristics (Both Legacy and New Chip)
    6. 5.6 Timing Requirements (New Chip only)
    7. 5.7 Typical Characteristics
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1 Output Enable
      2. 6.3.2 Dropout Voltage
      3. 6.3.3 Current Limit
      4. 6.3.4 Undervoltage Lockout (UVLO)
      5. 6.3.5 Thermal Shutdown
    4. 6.4 Device Functional Modes
      1. 6.4.1 Shutdown Mode
  8. 7 Application and Implementation
    1. 7.1 Application Information
      1. 7.1.1 Reverse Current
      2. 7.1.2 Input and Output Capacitor Requirements
      3. 7.1.3 Estimating Junction Temperature
      4. 7.1.4 Power Dissipation (PD)
    2. 7.2 Typical Application
      1. 7.2.1 Design Requirements
        1. 7.2.1.1 Recommended Capacitor Types
          1. 7.2.1.1.1 Recommended Capacitors (Legacy Chip)
            1. 7.2.1.1.1.1 ESR Range (Legacy Chip)
          2. 7.2.1.1.2 Recommended Capacitors (New Chip)
      2. 7.2.2 Detailed Design Procedure
        1. 7.2.2.1 Feedback Resistor Selection
        2. 7.2.2.2 Feedforward Capacitor
      3. 7.2.3 Application Curves
    3. 7.3 Power Supply Recommendations
    4. 7.4 Layout
      1. 7.4.1 Layout Guidelines
      2. 7.4.2 Layout Example
  9. 8 Device and Documentation Support
    1. 8.1 Device Support
      1. 8.1.1 Development Support
      2. 8.1.2 Device Nomenclature
    2. 8.2 Documentation Support
      1. 8.2.1 Related Documentation
    3. 8.3 Receiving Notification of Documentation Updates
    4. 8.4 Support Resources
    5. 8.5 Trademarks
    6. 8.6 Electrostatic Discharge Caution
    7. 8.7 Glossary
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information

Package Options

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

5.7 Typical Characteristics

LP2951-Q1 Quiescent Current vs Load Current (Legacy Chip)
 
Figure 5-1 Quiescent Current vs Load Current (Legacy Chip)
LP2951-Q1 Input Current vs Input Voltage (Legacy Chip)
 VOUT = 5V, IL = 0mA
Figure 5-3 Input Current vs Input Voltage (Legacy Chip)
LP2951-Q1 Input Current vs Input Voltage (Legacy Chip)
 VOUT = 5V, IL = 100μA
Figure 5-5 Input Current vs Input Voltage (Legacy Chip)
LP2951-Q1 Input Current vs Input Voltage (Legacy Chip)
 VOUT = 5V, IL = 100mA
Figure 5-7 Input Current vs Input Voltage (Legacy Chip)
LP2951-Q1 Output Voltage vs Temperature (Legacy Chip)
 
Figure 5-9 Output Voltage vs Temperature (Legacy Chip)
LP2951-Q1 Quiescent Current vs Input Voltage (Legacy Chip)
 VOUT = 5V, IL = 0mA
Figure 5-11 Quiescent Current vs Input Voltage (Legacy Chip)
LP2951-Q1 Quiescent Current vs Input Voltage (IL = 1mA) (Legacy Chip)
 VOUT = 5V, IL = 1mA
Figure 5-13 Quiescent Current vs Input Voltage (IL = 1mA) (Legacy Chip)
LP2951-Q1 Quiescent Current vs Input Voltage (Legacy Chip)
 VOUT = 5V, IL = 100mA
Figure 5-15 Quiescent Current vs Input Voltage (Legacy Chip)
LP2951-Q1 Quiescent Current vs Temperature (IL = 100mA) (Legacy Chip)
 
Figure 5-17 Quiescent Current vs Temperature (IL = 100mA) (Legacy Chip)
LP2951-Q1 Quiescent Current vs Temperature (IL = 100μA) (Legacy Chip)
 
Figure 5-19 Quiescent Current vs Temperature (IL = 100μA) (Legacy Chip)
LP2951-Q1 Short-Circuit Current vs Temperature (Legacy Chip)
 
Figure 5-21 Short-Circuit Current vs Temperature (Legacy Chip)
LP2951-Q1 Dropout Voltage vs Temperature (Legacy Chip)
 
Figure 5-23 Dropout Voltage vs Temperature (Legacy Chip)
LP2951-Q1 Dropout Voltage vs Dropout Current (Legacy Chip)
 
Figure 5-25 Dropout Voltage vs Dropout Current (Legacy Chip)
LP2951-Q1 Minimum Operating Voltage vs Temperature (Legacy Chip)
 
Figure 5-27 Minimum Operating Voltage vs Temperature (Legacy Chip)
LP2951-Q1 LP2951 FEEDBACK Bias Current vs Temperature (Legacy Chip)
 
Figure 5-29 LP2951 FEEDBACK Bias Current vs Temperature (Legacy Chip)
LP2951-Q1 ERROR Comparator Output vs Input Voltage (Legacy Chip)
 
Figure 5-31 ERROR Comparator Output vs Input Voltage (Legacy Chip)
LP2951-Q1 ERROR Comparator Sink Current vs Output Low Voltage (Legacy Chip)
 
Figure 5-33 ERROR Comparator Sink Current vs Output Low Voltage (Legacy Chip)
LP2951-Q1 Divider Resistance vs Temperature (Legacy Chip)
 
Figure 5-35 Divider Resistance vs Temperature (Legacy Chip)
LP2951-Q1 Shutdown Threshold Voltage (Off to On) vs Temperature (New Chip)
 
Figure 5-37 Shutdown Threshold Voltage (Off to On) vs Temperature (New Chip)
LP2951-Q1 Shutdown Threshold Voltage (On to Off) vs Temperature (New Chip)
 
Figure 5-39 Shutdown Threshold Voltage (On to Off) vs Temperature (New Chip)
LP2951-Q1 Line Regulation vs Input Voltage (New Chip)
VOUT = 5V, IL = 100μA
Figure 5-41 Line Regulation vs Input Voltage (New Chip)
LP2951-Q1 Output Voltage vs Input Voltage (New Chip)
VIN = 6V, VOUT = 5V
Figure 5-43 Output Voltage vs Input Voltage (New Chip)
LP2951-Q1 Ripple Rejection vs Frequency (Legacy Chip)
 
Figure 5-45 Ripple Rejection vs Frequency (Legacy Chip)
LP2951-Q1 Ripple Rejection vs Frequency (Legacy Chip)
 
Figure 5-47 Ripple Rejection vs Frequency (Legacy Chip)
LP2951-Q1 Ripple Rejection vs Frequency (New Chip)
VIN = 6V, VOUT = 5V, IL = 100mA
Figure 5-49 Ripple Rejection vs Frequency (New Chip)
LP2951-Q1 Output Noise vs Frequency (Legacy Chip)
 
Figure 5-51 Output Noise vs Frequency (Legacy Chip)
LP2951-Q1 Output Noise vs Frequency (New Chip)
VIN = 6V, VOUT = 5V, CL = 1μF
Figure 5-53 Output Noise vs Frequency (New Chip)
LP2951-Q1 Quiescent Current vs Load Current (New Chip)
VIN = 6V, VOUT = 5V
Figure 5-2 Quiescent Current vs Load Current (New Chip)
LP2951-Q1 Input Current vs Input Voltage (New Chip)
VOUT = 5V, IL = 0mA
Figure 5-4 Input Current vs Input Voltage (New Chip)
LP2951-Q1 Input Current vs Input Voltage (New Chip)
VOUT = 5V, IL = 100μA
Figure 5-6 Input Current vs Input Voltage (New Chip)
LP2951-Q1 Input Current vs Input Voltage (New Chip)
VOUT = 5V, IL = 100mA
Figure 5-8 Input Current vs Input Voltage (New Chip)
LP2951-Q1 Output Voltage vs Temperature (New Chip)
VIN = 6V, VOUT = 5V
Figure 5-10 Output Voltage vs Temperature (New Chip)
LP2951-Q1 Quiescent Current vs Input Voltage (New Chip)
VOUT = 5V, IL = 0mA
Figure 5-12 Quiescent Current vs Input Voltage (New Chip)
LP2951-Q1 Quiescent Current vs Input Voltage (New Chip)
VOUT = 5V, IL = 1mA
Figure 5-14 Quiescent Current vs Input Voltage (New Chip)
LP2951-Q1 Quiescent Current vs Input Voltage (New Chip)
VOUT = 5V, IL = 100mA
Figure 5-16 Quiescent Current vs Input Voltage (New Chip)
LP2951-Q1 Quiescent Current vs Temperature (IL = 100mA) (New Chip)
VIN = 6V, VOUT = 5V
Figure 5-18 Quiescent Current vs Temperature (IL = 100mA) (New Chip)
LP2951-Q1 Quiescent Current vs Temperature (IL = 100μA) (New Chip)
VIN = 6V, VOUT = 5V
Figure 5-20 Quiescent Current vs Temperature (IL = 100μA) (New Chip)
LP2951-Q1 Short-Circuit Current vs Temperature (New Chip)
VIN = 6V, VOUT = 0V
Figure 5-22 Short-Circuit Current vs Temperature (New Chip)
LP2951-Q1 Dropout Voltage vs Temperature (New Chip)
VIN = 4.9V
Figure 5-24 Dropout Voltage vs Temperature (New Chip)
LP2951-Q1 Dropout Voltage vs Dropout Current (New Chip)
VIN = 4.9V
Figure 5-26 Dropout Voltage vs Dropout Current (New Chip)
LP2951-Q1 Minimum Operating Voltage vs Temperature (New Chip)
 
Figure 5-28 Minimum Operating Voltage vs Temperature (New Chip)
LP2951-Q1 FEEDBACK Bias Current vs Temperature (New Chip)
 
Figure 5-30 FEEDBACK Bias Current vs Temperature (New Chip)
LP2951-Q1 ERROR Comparator Output vs Input Voltage (New Chip)
 
Figure 5-32 ERROR Comparator Output vs Input Voltage (New Chip)
LP2951-Q1 ERROR Comparator Sink Current vs Output Low Voltage (New Chip)
 
Figure 5-34 ERROR Comparator Sink Current vs Output Low Voltage (New Chip)
LP2951-Q1 Shutdown Threshold Voltage (Off to On) vs Temperature (Legacy Chip)
 
Figure 5-36 Shutdown Threshold Voltage (Off to On) vs Temperature (Legacy Chip)
LP2951-Q1 Shutdown Threshold Voltage (On to Off) vs Temperature (Legacy Chip)
 
Figure 5-38 Shutdown Threshold Voltage (On to Off) vs Temperature (Legacy Chip)
LP2951-Q1 Line Regulation vs Input Voltage (Legacy Chip)
 
Figure 5-40 Line Regulation vs Input Voltage (Legacy Chip)
LP2951-Q1 Load Regulation vs Load Current (New Chip)
VIN = 6V, VOUT = 5V
Figure 5-42 Load Regulation vs Load Current (New Chip)
LP2951-Q1 SHUTDOWN Input Current vs SHUTDOWN Voltage (New Chip)
VIN = 6V, VOUT = 5V
Figure 5-44 SHUTDOWN Input Current vs SHUTDOWN Voltage (New Chip)
LP2951-Q1 Ripple Rejection vs Frequency (Legacy Chip)
 
Figure 5-46 Ripple Rejection vs Frequency (Legacy Chip)
LP2951-Q1 Ripple Rejection vs Frequency (New Chip)
VIN = 6V, VOUT = 5V, CL = 1μF
Figure 5-48 Ripple Rejection vs Frequency (New Chip)
LP2951-Q1 Ripple Rejection vs Frequency (New Chip)
VIN = 6V, VOUT = 5V, IL = 1mA
Figure 5-50 Ripple Rejection vs Frequency (New Chip)
LP2951-Q1 Output Noise vs Frequency (New Chip)
VIN = 6V, VOUT = 5V, IL = 100μA
Figure 5-52 Output Noise vs Frequency (New Chip)
LP2951-Q1 Output Impedance vs Frequency (Legacy Chip)
 
Figure 5-54 Output Impedance vs Frequency (Legacy Chip)