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

6.6 System Characteristics

The following specifications apply to the circuit found in Figure 16 with the appropriate modifications from Table 2. These parameters are not tested in production and represent typical performance only. Unless otherwise stated the following conditions apply: TA = 25°C.
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
Load Regulation Percent output voltage change for the given load current change VOUT = 1.2 V,
VIN = 5 V, IOUT = 0 A to 2 A, PWM		 0.4%
VOUT = 1.8 V
VIN = 5 V, IOUT = 0 A to 2 A, PWM		 0.4%
VOUT = 3.3 V
VIN = 5 V, IOUT = 0 A to 2 A, PWM		 0.2%
Line Regulation Percent output voltage change for the given change in input voltage VOUT = 1.2 V
IOUT = 2 A, VIN = 3 V to 5 V, PWM 		0.2%
VOUT = 1.8 V
IOUT = 2 A, VIN = 3 V to 5 V, PWM		 0.15%
VOUT = 3.3 V
IOUT = 2 A,VIN = 4 V to 5 V, PWM		 0.18%
VR-PWM Output voltage ripple in PWM VOUT = 1.2 V
IOUT = 1 A, VIN = 5 V, PWM		 3.3 mV pk-pk
VOUT = 1.8 V
IOUT = 1 A, VIN = 5 V, PWM		 3.3
VOUT = 3.3V
IOUT= 1 A, VIN = 5 V, PWM		 4.2
VR-PFM Output voltage ripple in PFM VOUT = 1.2V
IOUT= 1 mA, VIN = 3 V, PFM		 22 mV pk-pk
VOUT = 1.8 V
IOUT= 1 mA, VIN=3 V, PFM		 22
VOUT = 3.3 V
IOUT = 1 mA, VIN = 5 V, PFM		 40
Load Transient Output voltage deviation from nominal due to a load current step VOUT = 1.2 V
VIN = 5 V, IOUT = 0 A to 2 A, Tr = Tf = 2 µs, PWM		 ±115 mV
VOUT = 1.8 V
VIN = 5 V, IOUT = 0 A to 2 A, Tr = Tf = 2 µs, PWM		 ±100
VOUT = 3.3 V
VIN = 5 V, IOUT = 0 A to 2 A, Tr = Tf = 2 µs, PWM		 ±150
Line Transient Output voltage deviation due to an input voltage step VOUT = 1.2V
IOUT = 1 A, VIN = 3 V to 5 V, Tr = Tf = 50 µs, PWM		 25 mV pk-pk
VOUT = 1.8 V
IOUT = 1 A, VIN = 3 V to 5 V, Tr = Tf = 50 µs, PWM		 30
VOUT = 3.3 V
IOUT = 1 A, VIN = 4 V to 5 V, Tr = Tf = 50 µs, PWM		 20
η Peak efficiency VOUT = 1.2 V
VIN = 3 V		 87%
VOUT = 1.8 V
VIN = 3 V		 91%
VOUT = 3.3 V
VIN = 4.2 V		 94%
Full load efficiency VOUT = 1.2 V
VIN = 3 V, IOUT = 2 A		 74%
VOUT = 1.8 V
VIN = 3 V, IOUT = 2 A		 79%
VOUT = 3.3 V
VIN = 4.2 V, IOUT = 2 A		 89%