SLVS582K April   2006  – December 2024 LP2950 , LP2951

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 Diagrams
    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 for the Legacy Chip
            1. 7.2.1.1.1.1 ESR Range (Legacy Chip)
          2. 7.2.1.1.2 Recommended Capacitors for the 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 Curve
    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. 8.2 Receiving Notification of Documentation Updates
    3. 8.3 Device Nomenclature
    4. 8.4 Documentation Support
      1. 8.4.1 Related Documentation
    5. 8.5 Support Resources
    6. 8.6 Trademarks
    7. 8.7 Electrostatic Discharge Caution
    8. 8.8 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

LP2950 LP2951 Quiescent Current vs Load Current (Legacy Chip)Figure 5-1 Quiescent Current vs Load Current (Legacy Chip)
LP2950 LP2951 Input Current vs Input Voltage (RL = OPEN) (Legacy Chip)Figure 5-3 Input Current vs Input Voltage (RL = OPEN) (Legacy Chip)
LP2950 LP2951 Input Current vs Input Voltage (RL = 50kΩ)Figure 5-5 Input Current vs Input Voltage (RL = 50kΩ)
LP2950 LP2951 Input Current vs Input Voltage (RL = 50Ω)(Legacy Chip)Figure 5-7 Input Current vs Input Voltage (RL = 50Ω)(Legacy Chip)
LP2950 LP2951 Output Voltage vs Temperature (Legacy Chip)Figure 5-9 Output Voltage vs Temperature (Legacy Chip)
LP2950 LP2951 Quiescent Current vs Input Voltage (IL = 0 ) (Legacy Chip)Figure 5-11 Quiescent Current vs Input Voltage (IL = 0 ) (Legacy Chip)
LP2950 LP2951 Quiescent Current vs Input Voltage (IL = 1mA)(Legacy Chip)Figure 5-13 Quiescent Current vs Input Voltage (IL = 1mA)(Legacy Chip)
LP2950 LP2951 Quiescent Current vs Input Voltage (IL = 100mA)(Legacy Chip)Figure 5-15 Quiescent Current vs Input Voltage (IL = 100mA)(Legacy Chip)
LP2950 LP2951 Quiescent Current vs Temperature (IL = 100mA)(Legacy Chip)Figure 5-17 Quiescent Current vs Temperature (IL = 100mA)(Legacy Chip)
LP2950 LP2951 Quiescent Current vs Temperature (IL = 100μA)(Legacy Chip)Figure 5-19 Quiescent Current vs Temperature (IL = 100μA)(Legacy Chip)
LP2950 LP2951 Short-Circuit Current vs Temperature (Legacy Chip)Figure 5-21 Short-Circuit Current vs Temperature (Legacy Chip)
LP2950 LP2951 Dropout Voltage vs Temperature (Legacy Chip)Figure 5-23 Dropout Voltage vs Temperature (Legacy Chip)
LP2950 LP2951 Dropout Voltage vs Dropout Current (Legacy Chip)Figure 5-25 Dropout Voltage vs Dropout Current (Legacy Chip)
LP2950 LP2951 Minimum Operating Voltage vs Temperature (Legacy Chip)Figure 5-27 Minimum Operating Voltage vs Temperature (Legacy Chip)
LP2950 LP2951 LP2951 FEEDBACK Bias Current vs Temperature (Legacy Chip)Figure 5-29 LP2951 FEEDBACK Bias Current vs Temperature (Legacy Chip)
LP2950 LP2951 LP2951 ERROR Comparator Output vs Input Voltage (Legacy Chip)Figure 5-31 LP2951 ERROR Comparator Output vs Input Voltage (Legacy Chip)
LP2950 LP2951 LP2951 ERROR Comparator Sink Current vs Output Low Voltage (Legacy Chip)Figure 5-33 LP2951 ERROR Comparator Sink Current vs Output Low Voltage (Legacy Chip)
LP2950 LP2951 LP2951 Divider Resistance vs Temperature (Legacy Chip)Figure 5-35 LP2951 Divider Resistance vs Temperature (Legacy Chip)
LP2950 LP2951 Shutdown Threshold Voltage (Off to On) vs Temperature (New Chip)
Figure 5-37 Shutdown Threshold Voltage (Off to On) vs Temperature (New Chip)
LP2950 LP2951 Shutdown Threshold Voltage (On to Off) vs Temperature (New Chip)
Figure 5-39 Shutdown Threshold Voltage (On to Off) vs Temperature (New Chip)
LP2950 LP2951 Line Regulation vs Input Voltage (New Chip)
VOUT = 5V, IOUT = 100μA
Figure 5-41 Line Regulation vs Input Voltage (New Chip)
LP2950 LP2951 Output Voltage vs Input Voltage (New Chip)
VIN = 6V, VOUT = 5V
Figure 5-43 Output Voltage vs Input Voltage (New Chip)
LP2950 LP2951 Line Transient Response vs Time (Legacy Chip)Figure 5-45 Line Transient Response vs Time (Legacy Chip)
LP2950 LP2951 Load Transient Response vs Time (VOUT = 5V, CL = 10µF) (Legacy Chip)Figure 5-47 Load Transient Response vs Time (VOUT = 5V, CL = 10µF) (Legacy Chip)
LP2950 LP2951 Load Transient Response vs Time (New Chip)
VIN= 6V, VOUT= 5V,IOUT= 0 to 100mA, COUT= 1μF
Figure 5-49 Load Transient Response vs Time (New Chip)
LP2950 LP2951 Enable Transient Response vs Time (New Chip)
VIN= 6V, VOUT= 5V, COUT= 1μF, IOUT= 1mA
Figure 5-51 Enable Transient Response vs Time (New Chip)
LP2950 LP2951 Enable Transient Response vs Time (New Chip)
VIN= 6V, VOUT= 5V, COUT= 10μF, IOUT= 1mA
Figure 5-53 Enable Transient Response vs Time (New Chip)
LP2950 LP2951 Ripple Rejection vs Frequency (Legacy Chip)Figure 5-55 Ripple Rejection vs Frequency (Legacy Chip)
LP2950 LP2951 Ripple Rejection vs Frequency (Legacy Chip)Figure 5-57 Ripple Rejection vs Frequency (Legacy Chip)
LP2950 LP2951 Ripple Rejection vs Frequency (New Chip)
VIN= 6V, VOUT= 5V, IOUT= 100mA
Figure 5-59 Ripple Rejection vs Frequency (New Chip)
LP2950 LP2951 Output Noise vs Frequency (Legacy Chip)Figure 5-61 Output Noise vs Frequency (Legacy Chip)
LP2950 LP2951 Output Noise vs Frequency (New Chip)
VIN= 6V, VOUT= 5V, COUT= 1μF
Figure 5-63 Output Noise vs Frequency (New Chip)
LP2950 LP2951 Quiescent Current vs Load Current (New Chip)
VIN = 6V, VOUT = 5V
Figure 5-2 Quiescent Current vs Load Current (New Chip)
LP2950 LP2951 Input Current vs Input Voltage (RL = OPEN) (New Chip)
VOUT = 5V, IL= 0mA
Figure 5-4 Input Current vs Input Voltage (RL = OPEN) (New Chip)
LP2950 LP2951 Input Current vs Input Voltage (RL = 50kΩ) (New Chip)
VOUT = 5V, IL=100μA
Figure 5-6 Input Current vs Input Voltage (RL = 50kΩ) (New Chip)
LP2950 LP2951 Input Current vs Input Voltage (RL = 50Ω) (New Chip)
VOUT = 5V, IL=100mA
Figure 5-8 Input Current vs Input Voltage (RL = 50Ω) (New Chip)
LP2950 LP2951 Output Voltage vs Temperature (New Chip)
VIN = 6V, VOUT = 5V
Figure 5-10 Output Voltage vs Temperature (New Chip)
LP2950 LP2951 Quiescent Current vs Input Voltage (IL = 0 ) (New Chip)
VOUT = 5V
Figure 5-12 Quiescent Current vs Input Voltage (IL = 0 ) (New Chip)
LP2950 LP2951 Quiescent Current vs Input Voltage (IL = 1mA)(New Chip)
VOUT = 5V
Figure 5-14 Quiescent Current vs Input Voltage (IL = 1mA)(New Chip)
LP2950 LP2951 Quiescent Current vs Input Voltage (IL = 100mA)(New Chip)
VOUT = 5V
Figure 5-16 Quiescent Current vs Input Voltage (IL = 100mA)(New Chip)
LP2950 LP2951 Quiescent Current vs Temperature (IL = 100mA)(New Chip)
VIN = 6V, VOUT = 5V
Figure 5-18 Quiescent Current vs Temperature (IL = 100mA)(New Chip)
LP2950 LP2951 Quiescent Current vs Temperature (IL = 100μA)(New Chip)
VIN = 6V, VOUT = 5V
Figure 5-20 Quiescent Current vs Temperature (IL = 100μA)(New Chip)
LP2950 LP2951 Short-Circuit Current vs Temperature (New Chip)
VIN = 6V, VOUT = 0V
Figure 5-22 Short-Circuit Current vs Temperature (New Chip)
LP2950 LP2951 Dropout Voltage vs Temperature (New Chip)
VIN = 4.9V
Figure 5-24 Dropout Voltage vs Temperature (New Chip)
LP2950 LP2951 Dropout Voltage vs Dropout Current (New Chip)
VIN = 4.9V
Figure 5-26 Dropout Voltage vs Dropout Current (New Chip)
LP2950 LP2951 Minimum Operating Voltage vs Temperature (New Chip)
Figure 5-28 Minimum Operating Voltage vs Temperature (New Chip)
LP2950 LP2951 FEEDBACK Bias Current vs Temperature (New Chip)
Figure 5-30 FEEDBACK Bias Current vs Temperature (New Chip)
LP2950 LP2951 ERROR Comparator Output vs Input Voltage (New Chip)
Figure 5-32 ERROR Comparator Output vs Input Voltage (New Chip)
LP2950 LP2951 ERROR Comparator Sink Current vs Output Low Voltage (New Chip)
Figure 5-34 ERROR Comparator Sink Current vs Output Low Voltage (New Chip)
LP2950 LP2951 Shutdown Threshold Voltage (Off to On) vs Temperature (Legacy Chip)Figure 5-36 Shutdown Threshold Voltage (Off to On) vs Temperature (Legacy Chip)
LP2950 LP2951 Shutdown Threshold Voltage (On to Off) vs Temperature (Legacy Chip)Figure 5-38 Shutdown Threshold Voltage (On to Off) vs Temperature (Legacy Chip)
LP2950 LP2951 Line Regulation vs Input Voltage (Legacy Chip)Figure 5-40 Line Regulation vs Input Voltage (Legacy Chip)
LP2950 LP2951 Load Regulation vs Load Current (New Chip)
VIN = 6V, VOUT = 5V
Figure 5-42 Load Regulation vs Load Current (New Chip)
LP2950 LP2951 SHUTDOWN Input Current vs SHUTDOWN Voltage (New Chip)
VIN = 6V, VOUT = 5V
Figure 5-44 SHUTDOWN Input Current vs SHUTDOWN Voltage (New Chip)
LP2950 LP2951 Line Transient Response vs Time (New Chip)
VIN= 6V to 8V, VOUT= 5V,COUT= 1μF, IOUT= 100μA
Figure 5-46 Line Transient Response vs Time (New Chip)
LP2950 LP2951 Load Transient Response vs Time (New Chip)
VIN= 6V, VOUT= 5V,IOUT= 0 to 100mA, COUT= 10μF
Figure 5-48 Load Transient Response vs Time (New Chip)
LP2950 LP2951 Enable Transient Response vs Time (IL = 1mA, CL = 1µF) (Legacy Chip)Figure 5-50 Enable Transient Response vs Time (IL = 1mA, CL = 1µF) (Legacy Chip)
LP2950 LP2951 Enable Transient Response vs Time (IL = 1mA, CL = 10µF)Figure 5-52 Enable Transient Response vs Time (IL = 1mA, CL = 10µF)
LP2950 LP2951 Output Impedance vs Frequency (Legacy Chip)Figure 5-54 Output Impedance vs Frequency (Legacy Chip)
LP2950 LP2951 Ripple Rejection vs Frequency (Legacy Chip)Figure 5-56 Ripple Rejection vs Frequency (Legacy Chip)
LP2950 LP2951 Ripple Rejection vs Frequency (New Chip)
VIN= 6V, VOUT= 5V, COUT= 1μF
Figure 5-58 Ripple Rejection vs Frequency (New Chip)
LP2950 LP2951 Ripple Rejection vs Frequency (New Chip)
VIN= 6V, VOUT= 5V, IOUT= 1mA
Figure 5-60 Ripple Rejection vs Frequency (New Chip)
LP2950 LP2951 Output Noise vs Frequency (New Chip)
VIN= 6V, VOUT= 5V, IOUT= 100μA
Figure 5-62 Output Noise vs Frequency (New Chip)