SNVSB87 November   2018 LM3880-Q1

PRODUCTION DATA.  

  1. Features
  2. Applications
  3. Description
    1.     Device Images
      1.      Simple Power Supply Sequencing
  4. Revision History
  5. Pin Configuration and Functions
    1.     Pin Functions
  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
      1. 6.5.1 Timing Requirements
    6. 6.6 Typical Characteristics
  7. Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Enable Pin Operation
      2. 7.3.2 Incomplete Sequence Operation
    4. 7.4 Device Functional Modes
      1. 7.4.1 Power Up With EN Pin
      2. 7.4.2 Power Down With EN Pin
  8. Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Open Drain Flags Pullup
      2. 8.1.2 Enable the Device
    2. 8.2 Typical Application
      1. 8.2.1 Simple Sequencing of Three Power Supplies
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
        3. 8.2.1.3 Application Curves
      2. 8.2.2 Sequencing Using Independent Flag Supply
    3. 8.3 Do's and Don'ts
  9. Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Device Support
      1. 11.1.1 Third-Party Products Disclaimer
      2. 11.1.2 Device Nomenclature
    2. 11.2 Community Resources
    3. 11.3 Trademarks
    4. 11.4 Electrostatic Discharge Caution
    5. 11.5 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

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

Device Nomenclature

The list of parts available to order appear in the Package Option Addendum.

LM3880-Q1 lm3880-nomenclature.pngFigure 22. Device Nomenclature

Table 3. Sequence Designator Table (1)

SEQUENCE NUMBER FLAG ORDER
POWER UP POWER DOWN
1 1 - 2 - 3 3 - 2 - 1
2 1 - 2 - 3 3 - 1 - 2
3 1 - 2 - 3 2 - 3 - 1
4 1 - 2 - 3 2 - 1 - 3
5 1 - 2 - 3 1 - 3 - 2
6 1 - 2 - 3 1 - 2 - 3
See Figure 1 and Figure 2.

Table 4. Timing Designator Table(1)

TIMING DESIGNATOR DELAYS (ms)
td1 td2 td3 td4 td5 td6
AA 10 10 10 10 10 10
AB 30 30 30 30 30 30
AC 60 60 60 60 60 60
AD 120 120 120 120 120 120
AE 2 2 2 2 2 2
AF 16 16 16 16 16 16
See Figure 1 and Figure 2.