SNVS852D June   2012  – August 2018 LMZ20502

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
    1.     Device Images
      1.      Simplified Schematic
      2.      Typical Efficiency for VOUT = 1.8 V Auto Mode
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
    1.     Pin 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
    6. 6.6 System Characteristics
    7. 6.7 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 Nano Scale Package
      2. 7.3.2 Internal Synchronous Rectifier
      3. 7.3.3 Current Limit Protection
      4. 7.3.4 Start-Up
      5. 7.3.5 Dropout Behavior
      6. 7.3.6 Power Good Flag Function
      7. 7.3.7 Thermal Shutdown
    4. 7.4 Device Functional Modes
      1. 7.4.1 PWM Operation
      2. 7.4.2 PFM Operation
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Detailed Design Procedure
        1. 8.2.1.1 Custom Design With WEBENCH® Tools
        2. 8.2.1.2 Setting The Output Voltage
        3. 8.2.1.3 Output and Feed-Forward Capacitors
        4. 8.2.1.4 Input Capacitors
        5. 8.2.1.5 Maximum Ambient Temperature
        6. 8.2.1.6 Options
      2. 8.2.2 Application Curves
    3. 8.3 Do's and Don'ts
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
    3. 10.3 Soldering Information
  11. 11Device and Documentation Support
    1. 11.1 Device Support
      1. 11.1.1 Third-Party Products Disclaimer
      2. 11.1.2 Development Support
        1. 11.1.2.1 Custom Design With WEBENCH® Tools
      3. 11.1.3 Documentation Support
        1. 11.1.3.1 Related Documentation
    2. 11.2 Receiving Notification of Documentation Updates
    3. 11.3 Community Resources
    4. 11.4 Trademarks
    5. 11.5 Electrostatic Discharge Caution
    6. 11.6 Glossary
  12. 12Mechanical, Packaging, and Orderable Information
    1. 12.1 Tape and Reel Information

Package Options

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • SIL|8
Thermal pad, mechanical data (Package|Pins)
Orderable Information

8.2.2 Application Curves

The following specifications apply to the circuit found in Figure 16 or Figure 17 with the appropriate modifications from Table 2. These parameters are not tested and represent typical performance only. Unless otherwise stated the following conditions apply: TA = 25°C.
LMZ20502 efficiency_Vout_1.8V_snvs852.png
VOUT = 1.8 V
Figure 20. Efficiency
LMZ20502 regulation_Vout_1.8V_snvs852.png
VOUT = 1.8 V
Figure 22. Regulation, AUTO Mode
LMZ20502 auto_mode_load_boundary_Vout_1.8V_snvs852.png
VOUT = 1.8 V
Figure 24. AUTO Mode Thresholds
LMZ20502 efficiency_Vout_1.2V_snvs852.png
VOUT = 1.2 V
Figure 26. Efficiency
LMZ20502 regulation_Vout_1.2V_snvs852.png
VOUT = 1.2 V
Figure 28. Regulation, AUTO Mode
LMZ20502 auto_1p2v_snvs852.png
VOUT = 1.2 V
Figure 30. AUTO Mode Thresholds
LMZ20502 efficiency_Vout_3.3V_snvs852.png
VOUT = 3.3 V
Figure 32. Efficiency
LMZ20502 regulation_Vout_3.3V_snvs852.png
VOUT = 3.3 V
Figure 34. Regulation, AUTO Mode
LMZ20502 auto_mode_load_boundary_Vout_3.3V_snvs852.png
VOUT = 3.3 V
Figure 36. AUTO Mode Thresholds
LMZ20502 fig_06.gif
VOUT = 1.8 V VIN = 4.2 V
Figure 21. Load Transient In PWM
LMZ20502 fig_08.gif
VOUT = 1.8 V VIN = 4.2 V
Figure 23. Load Transient In AUTO Mode
LMZ20502 start_5v_1p8v_2A_new.gif
VOUT = 1.8 V VIN = 5 V IOUT = 1 A
Figure 25. Start-Up
LMZ20502 fig_12.gif
VOUT = 1.2 V VIN = 4.2 V
Figure 27. Load Transients In PWM
LMZ20502 fig_14.gif
VOUT = 1.2 V VIN = 4.2 V
Figure 29. Load Transients In AUTO Mode
LMZ20502 start_5v_1p2v_2A_new.gif
VOUT = 1.2 V VIN = 5V IOUT = 1A
Figure 31. Start-up
LMZ20502 fig_18.gif
VOUT = 3.3 V VIN = 4.2 V
Figure 33. Load Transients In PWM
LMZ20502 fig_20.gif
VOUT = 3.3 V VIN = 4.2 V
Figure 35. Load Transients In AUTO Mode
LMZ20502 start_5v_3p3v_2A_new.gif
VOUT = 3.3 V VIN = 5 V IOUT = 1 A
Figure 37. Start-up

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