SNVS668J June   2010  – April 2019 LMZ10503EXT

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
    1.     Device Images
      1.      Typical Application Circuit
      2.      Efficiency VOUT = 3.3 V
  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 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 Enable
      2. 7.3.2 Enable and UVLO
      3. 7.3.3 Soft-Start
      4. 7.3.4 Soft-Start Capacitor
      5. 7.3.5 Tracking
      6. 7.3.6 Tracking - Equal Soft-Start Time
      7. 7.3.7 Tracking - Equal Slew Rates
      8. 7.3.8 Current Limit
      9. 7.3.9 Overtemperature Protection
    4. 7.4 Device Functional Modes
      1. 7.4.1 Prebias Start-Up Capability
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 Custom Design With WEBENCH® Tools
        2. 8.2.2.2 Input Capacitor Selection
        3. 8.2.2.3 Output Capacitor Selection
          1. 8.2.2.3.1 Output Voltage Setting
        4. 8.2.2.4 Loop Compensation
      3. 8.2.3 Application Curves
    3. 8.3 System Examples
      1. 8.3.1 Application Schematic for 3.3-V to 5-V Input and 2.5-V Output With Optimized Ripple and Transient Response
      2. 8.3.2 Application Schematic for 3.3-V to 5-V Input and 2.5-V Output
      3. 8.3.3 EMI Tested Schematic for 2.5-V Output Based on 3.3-V to 5-V Input
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Examples
    3. 10.3 Estimate Power Dissipation and Thermal Considerations
    4. 10.4 Power Module SMT Guidelines
  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
    2. 11.2 Documentation Support
      1. 11.2.1 Related Documentation
    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

Package Options

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

6.6 Typical Characteristics

Unless otherwise specified, the following conditions apply: VIN = VEN = 5 V, CIN is 47-µF 10-V X5R ceramic capacitor; TA = 25°C for efficiency curves and waveforms.
LMZ10503EXT 30118271.png
VOUT = 3.3 V
Figure 1. Efficiency
LMZ10503EXT 30118269.png
VOUT = 1.8 V
Figure 3. Efficiency
LMZ10503EXT 30118268.png
VOUT = 1.2 V
Figure 5. Efficiency
LMZ10503EXT 301182b3.png
VIN = 5 V, RθJA = 20°C/W
Figure 7. Current Derating
LMZ10503EXT 301182a6.png
VIN = 5 V, VOUT = 2.5 V, IOUT = 3 A Evaluation Board
Figure 9. Radiated Emissions (EN55022, Class B)
LMZ10503EXT 30118255.png
VOUT = 2.5 V, IOUT = 0 A
Figure 11. Prebiased Start-Up
LMZ10503EXT 30118263.png
VIN = 5.0 V, VOUT = 2.5 V, IOUT = 0.3-A to 2.7-A to 0.3-A step
20-MHz Bandwidth Limited
Refer to Table 5 for BOM, includes optional components
Figure 13. Load Transient Response
LMZ10503EXT 30118265.png
VIN = 5.0 V, VOUT = 2.5 V, IOUT = 3 A,
20 mV/DIV Refer to Table 5 for BOM
Figure 15. Output Voltage Ripple
LMZ10503EXT 30118270.png
VOUT = 2.5 V
Figure 2. Efficiency
LMZ10503EXT 301182a0.png
VOUT = 1.5 V
Figure 4. Efficiency
LMZ10503EXT 30118267.png
VOUT = 0.8 V
Figure 6. Efficiency
LMZ10503EXT 301182b4.png
VIN = 3.3 V, RθJA = 20°C/W
Figure 8. Current Derating
LMZ10503EXT 30118256.png
VOUT = 2.5 V, IOUT = 0 A
Figure 10. Start-Up
LMZ10503EXT 30118262.png
VIN = 3.3 V, VOUT = 2.5 V, IOUT = 0.3-A to 2.7-A to 0.3-A step
20-MHz Bandwidth Limited
Refer to Table 5 for BOM, includes optional components
Figure 12. Load Transient Response
LMZ10503EXT 30118264.png
VIN = 3.3 V, VOUT = 2.5 V, IOUT = 3 A, 20 mV/DIV
Refer to Table 5 for BOM
Figure 14. Output Voltage Ripple