SNVS171L November   2001  – February 2025 LP2992

PRODUCTION DATA  

  1.   1
  2. Features
  3. Applications
  4. Description
  5. Pin Configuration and Functions
  6. 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
    6. 5.6 Typical Characteristics
  7. 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
        1. 6.3.3.1 Current Limit (Legacy Chip)
        2. 6.3.3.2 Current Limit (New Chip)
      4. 6.3.4 Undervoltage Lockout (UVLO)
      5. 6.3.5 Output Pulldown
      6. 6.3.6 Thermal Shutdown
    4. 6.4 Device Functional Modes
      1. 6.4.1 Normal Operation
      2. 6.4.2 Dropout Operation
      3. 6.4.3 Disabled
  8. Application and Implementation
    1. 7.1 Application Information
      1. 7.1.1 Estimating Junction Temperature
      2. 7.1.2 Input and Output Capacitor Requirements
      3. 7.1.3 Noise Bypass Capacitor (CBYPASS)
      4. 7.1.4 Power Dissipation (PD)
      5. 7.1.5 Recommended Capacitor Types
        1. 7.1.5.1 Recommended Capacitors (Legacy Chip)
          1. 7.1.5.1.1 Tantalum Capacitors (Legacy Chip)
        2. 7.1.5.2 Recommended Capacitors (New Chip)
      6. 7.1.6 Reverse Current
    2. 7.2 Typical Application
      1. 7.2.1 Design Requirements
      2. 7.2.2 Detailed Design Procedure
        1. 7.2.2.1 ON/OFF Operation
      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 Examples
  9. Device and Documentation Support
    1. 8.1 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. Revision History
  11. 10Mechanical, Packaging, and Orderable Information

Package Options

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

Typical Characteristics

CIN = 1µF, COUT = 4.7µF, VIN = VOUT(NOM) + 1V, TA = 25°C, and ON/OFF pin is tied to the IN pin (unless otherwise noted)

LP2992 VOUT
            vs Temperature (Legacy Chip)
 
Figure 5-1 VOUT vs Temperature (Legacy Chip)
LP2992 Short-Circuit
            Current (Legacy Chip)
 
Figure 5-3 Short-Circuit Current (Legacy Chip)
LP2992 Short-Circuit
            Current (Legacy Chip)
 
Figure 5-5 Short-Circuit Current (Legacy Chip)
LP2992 Short-Circuit
            Current vs Output Voltage (Legacy Chip)
 
Figure 5-7 Short-Circuit Current vs Output Voltage (Legacy Chip)
LP2992 Ripple
            Rejection vs Frequency (Legacy Chip)
 
Figure 5-9 Ripple Rejection vs Frequency (Legacy Chip)
LP2992 Ripple
            Rejection vs Frequency (Legacy Chip)
 
Figure 5-11 Ripple Rejection vs Frequency (Legacy Chip)
LP2992 Ripple Rejection vs Frequency (New
            Chip)
VIN = 5V, VOUT = 3.3V, COUT = 10μF, CBYP = 0nF
Figure 5-13 Ripple Rejection vs Frequency (New Chip)
LP2992 Ripple
            Rejection vs Frequency (Legacy Chip)
 
Figure 5-15 Ripple Rejection vs Frequency (Legacy Chip)
LP2992 Ripple Rejection vs Frequency (New
            Chip)
VIN = 3.7V, VOUT = 3.3V, COUT = 10μF, CBYP = 0nF
Figure 5-17 Ripple Rejection vs Frequency (New Chip)
LP2992 Ripple
            Rejection vs Frequency (Legacy Chip)
 
Figure 5-19 Ripple Rejection vs Frequency (Legacy Chip)
LP2992 Output
            Impedance vs Frequency (Legacy Chip)
 
Figure 5-21 Output Impedance vs Frequency (Legacy Chip)
LP2992 Output Noise
            Density (Legacy Chip)
 
Figure 5-23 Output Noise Density (Legacy Chip)
LP2992 Output Noise
            Density (Legacy Chip)
 
Figure 5-25 Output Noise Density (Legacy Chip)
LP2992 GND Pin vs Load
            Current (Legacy Chip)
 
Figure 5-27 GND Pin vs Load Current (Legacy Chip)
LP2992 Dropout Voltage
            vs Temperature (Legacy Chip)
 
Figure 5-29 Dropout Voltage vs Temperature (Legacy Chip)
LP2992 Input Current
            vs Input Voltage (Legacy Chip)
 
Figure 5-31 Input Current vs Input Voltage (Legacy Chip)
LP2992 IGND
            vs Load and Temperature (Legacy Chip)
 
Figure 5-33 IGND vs Load and Temperature (Legacy Chip)
LP2992 Short-Circuit
            Current vs Temperature (Legacy Chip)
 
Figure 5-35 Short-Circuit Current vs Temperature (Legacy Chip)
LP2992 Load Transient
            Response (Legacy Chip)
 
Figure 5-37 Load Transient Response (Legacy Chip)
LP2992 Load Transient
            Response (Legacy Chip)
 
Figure 5-39 Load Transient Response (Legacy Chip)
LP2992 Load Transient
            Response (Legacy Chip)
 
Figure 5-41 Load Transient Response (Legacy Chip)
LP2992 Line Transient
            Response (Legacy Chip)
 
 
Figure 5-43 Line Transient Response (Legacy Chip)
LP2992 Line Transient
            Response (Legacy Chip)
 
 
Figure 5-45 Line Transient Response (Legacy Chip)
LP2992 Line Transient
            Response (Legacy Chip)
 
 
Figure 5-47 Line Transient Response (Legacy Chip)
LP2992 Line Transient
            Response (Legacy Chip)
 
 
Figure 5-49 Line Transient Response (Legacy Chip)
LP2992 Turn-On Time
            (Legacy Chip)
 
Figure 5-51 Turn-On Time (Legacy Chip)
LP2992 Turn-On Time
            (Legacy Chip)
 
Figure 5-53 Turn-On Time (Legacy Chip)
LP2992 Turn-On Time
            (Legacy Chip)
 
Figure 5-55 Turn-On Time (Legacy Chip)
LP2992 Turn-On Time
            (Legacy Chip)
 
Figure 5-57 Turn-On Time (Legacy Chip)
LP2992 Stable ESR Range vs Load Current
            (Legacy Chip)Figure 5-59 Stable ESR Range vs Load Current (Legacy Chip)
LP2992 VOUT
            vs Temperature (New Chip)
VIN = 4.3V, VOUT = 3.3V
Figure 5-2 VOUT vs Temperature (New Chip)
LP2992 Short-Circuit Current vs Time (New
            Chip)
VIN = 6V
Figure 5-4 Short-Circuit Current vs Time (New Chip)
LP2992 Short-Circuit Current vs Time (New
            Chip)
 VIN = 16V
Figure 5-6 Short-Circuit Current vs Time (New Chip)
LP2992 Short-Circuit Current vs Output
            Voltage (New Chip)
VOUT = 3.3V
Figure 5-8 Short-Circuit Current vs Output Voltage (New Chip)
LP2992 Ripple
            Rejection vs Frequency (Legacy Chip)
 
Figure 5-10 Ripple Rejection vs Frequency (Legacy Chip)
LP2992 Ripple
            Rejection vs Frequency (Legacy Chip)
 
Figure 5-12 Ripple Rejection vs Frequency (Legacy Chip)
LP2992 Ripple
            Rejection vs Frequency (Legacy Chip)
 
Figure 5-14 Ripple Rejection vs Frequency (Legacy Chip)
LP2992 Ripple
            Rejection vs Frequency (Legacy Chip)
 
Figure 5-16 Ripple Rejection vs Frequency (Legacy Chip)
LP2992 Ripple
            Rejection vs Frequency (Legacy Chip)
 
Figure 5-18 Ripple Rejection vs Frequency (Legacy Chip)
LP2992 Ripple Rejection vs Frequency (New
            Chip)
 VIN = 5V, VOUT = 3.3V, COUT = 10μF, CBYP = 10nF
Figure 5-20 Ripple Rejection vs Frequency (New Chip)
LP2992 Output
            Impedance vs Frequency (Legacy Chip)
 
Figure 5-22 Output Impedance vs Frequency (Legacy Chip)
LP2992 Output Noise Density vs Frequency
            (New Chip)
 
Figure 5-24 Output Noise Density vs Frequency (New Chip)
LP2992 Output Noise Density vs Frequency
            (New Chip)
 VOUT = 3.3V, IOUT = 150mA
Figure 5-26 Output Noise Density vs Frequency (New Chip)
LP2992 GND Pin vs Load
            Current (New Chip)
 
Figure 5-28 GND Pin vs Load Current (New Chip)
LP2992 Dropout Voltage
            vs Temperature (New Chip)
 
Figure 5-30 Dropout Voltage vs Temperature (New Chip)
LP2992 Input Current vs Input Voltage (New
            Chip)
 
Figure 5-32 Input Current vs Input Voltage (New Chip)
LP2992 IGND
            vs Load and Temperature (New Chip)
 
Figure 5-34 IGND vs Load and Temperature (New Chip)
LP2992 Short-Circuit Current vs Temperature
            (New Chip)
 
Figure 5-36 Short-Circuit Current vs Temperature (New Chip)
LP2992 Load Transient (New Chip)
dI/dt = 1A/μs
Figure 5-38 Load Transient (New Chip)
LP2992 Load Transient Response (New
            Chip)
dI/dt = 1A/μs
Figure 5-40 Load Transient Response (New Chip)
LP2992 Load Transient Response (New
            Chip)
VOUT = 3.3V, dI/dt = 1A/μs
Figure 5-42 Load Transient Response (New Chip)
LP2992 Line Transient Response (New
            Chip)
VOUT = 3.3V, CBYP = 0nF, ΔVIN = 1V, IOUT = 1mA,
dV/dt = 1V/μs
Figure 5-44 Line Transient Response (New Chip)
LP2992 Line Transient Response (New
            Chip)
VOUT = 3.3V, CBYP = 0nF, ΔVIN = 1V, IOUT = 150mA,
dV/dt = 1V/μs
Figure 5-46 Line Transient Response (New Chip)
LP2992 Line Transient Response (New
            Chip)
VOUT = 3.3V, CBYP = 10nF, ΔVIN = 1V, IOUT = 1mA,
dV/dt = 1V/μs
Figure 5-48 Line Transient Response (New Chip)
LP2992 Line Transient Response (New
            Chip)
VOUT = 3.3V, CBYP = 10nF, ΔVIN = 1V, IOUT = 150mA, dV/dt = 1V/μs
Figure 5-50 Line Transient Response (New Chip)
LP2992 Turn-On Time (New Chip)
 
Figure 5-52 Turn-On Time (New Chip)
LP2992 Turn-On Time (New Chip)
 
Figure 5-54 Turn-On Time (New Chip)
LP2992 Turn-On Time (New Chip)
COUT = 4.7μF
Figure 5-56 Turn-On Time (New Chip)
LP2992 Turn-On Time (New Chip)
COUT = 4.7μF
Figure 5-58 Turn-On Time (New Chip)