SNVS739F December   2011  – October 2016 LM10504

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and 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 - General
    6. 6.6  Electrical Characteristics - Buck 1
    7. 6.7  Electrical Characteristics - Buck 2
    8. 6.8  Electrical Characteristics - Buck 3
    9. 6.9  Electrical Characteristics - LDO
    10. 6.10 Electrical Characteristics - Comparators
    11. 6.11 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 Buck Regulators Description
      2. 7.3.2 PWM Operation
      3. 7.3.3 PFM Operation
      4. 7.3.4 Soft Start
      5. 7.3.5 Current Limiting
      6. 7.3.6 Internal Synchronous Rectification
      7. 7.3.7 Bypass-FET Operation on Buck 1 and Buck 2
      8. 7.3.8 Low Dropout Operation
      9. 7.3.9 Out of Regulation
    4. 7.4 Device Functional Modes
      1. 7.4.1  Start-Up Sequence
      2. 7.4.2  Power-On Default and Device Enable
      3. 7.4.3  Reset Pin Function
      4. 7.4.4  DevSLP Function
        1. 7.4.4.1 DevSLP Pin
        2. 7.4.4.2 DevSLP Programming Through SPI
        3. 7.4.4.3 DevSLP Operational Constraints
      5. 7.4.5  Vselect_B2, Vselect_B3 Function
      6. 7.4.6  Undervoltage Lockout (UVLO)
      7. 7.4.7  Overvoltage Lockout (OVLO)
      8. 7.4.8  Device Status, Interrupt Enable
      9. 7.4.9  Thermal Shutdown (TSD)
      10. 7.4.10 Comparator
    5. 7.5 Programming
    6. 7.6 Register Maps
  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 External Components Selection
          1. 8.2.2.1.1 Output Inductors and Capacitors Selection
          2. 8.2.2.1.2 Inductor Selection
            1. 8.2.2.1.2.1 Recommended Method for Inductor Selection
            2. 8.2.2.1.2.2 Alternate Method for Inductor Selection
              1. 8.2.2.1.2.2.1 Suggested Inductors and Their Suppliers
          3. 8.2.2.1.3 Output and Input Capacitors Characteristics
            1. 8.2.2.1.3.1 Output Capacitor Selection
            2. 8.2.2.1.3.2 Input Capacitor Selection
        2. 8.2.2.2 Recommendations For Unused Functions and Pins
      3. 8.2.3 Application Curves
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
      1. 10.1.1 PCB Layout Thermal Dissipation For DSGBA Package
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Device Support
      1. 11.1.1 Third-Party Products Disclaimer
    2. 11.2 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

Package Options

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

1 Features

  • Three High-Efficiency Programmable Buck Regulators
    • Integrated FETs With Low RDSON
    • Bucks Operate With Their Phases Shifted to Reduce the Input Current Ripple and Capacitor Size
    • Programmable Output Voltage Through the SPI Interface
    • Overvoltage and Undervoltage Lockout
    • Automatic Internal Soft Start With Power-On Reset
    • Current Overload and Thermal Shutdown Protection
    • PFM Mode for Low-Load, High-Efficiency Operation
  • Power-Down Data Protection Enhances Data Integrity
    • Bypass Mode Available on Bucks 1 and 2
  • Deep Sleep Mode to Save Power During Idle Times With DevSLP Function
  • Programmable Low-Dropout LDO 1.2 V to 3.1 V, up to 250 mA
  • SPI-Programmable Interrupt Comparator
    (2 V to 4 V)
  • Alternate Buck VOUTS Selectable Through VSELECT Logic Pins
  • Customizable Start-Up Sequencing for Varied Controllers
  • RESET Pin
  • Programmable Buck Regulators:
    • Buck 1: 1.1 V to 3.6 V at 1.6 A
    • Buck 2: 1.1 V to 3.6 V at 1 A
    • Buck 3: 0.7 V to 1.335 V at 1 A
  • ±3% Feedback Voltage Accuracy
  • Up to 95% Efficient Buck Regulators
  • 2-MHz Switching Frequency for Smaller Inductor Size

2 Applications

    Solid-State Drives

3 Description

The LM10504 is an advanced PMU containing three configurable, high-efficiency buck regulators for supplying variable voltages. The device is ideal for supporting ASIC and SOC designs for solid-state and flash drives.

The LM10504 operates cooperatively with ASIC to optimize the supply voltage for low-power conditions and power saving modes through the SPI interface. It also supports a 250-mA LDO and a programmable interrupt comparator.

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
LM10504 DSBGA (34) 2.80 mm × 2.80 mm
  1. For all available packages, see the orderable addendum at the end of the data sheet.

Application Schematic

LM10504 30176901.gif