SNVS325E January   2005  – January 2016 LM2852

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
    1. 3.1 Efficiency vs ILOAD
  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
    6. 6.6 LM2852Y Typical Characteristics (500 kHz)
    7. 6.7 LM2852X Typical Characteristics (1500 kHz)
    8. 6.8 LM2852 Typical Characteristics (Both Y and X Versions)
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Split-Rail Operation
      2. 7.3.2 Switch Node Protection
    4. 7.4 Device Functional Modes
  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 Input Capacitor (CIN)
        2. 8.2.2.2 Soft-Start Capacitor (CSS)
        3. 8.2.2.3 Soft-Start Capacitor (CSS) and Fault Conditions
        4. 8.2.2.4 Compensation
        5. 8.2.2.5 Output Filter Values
        6. 8.2.2.6 Choosing an Inductance Value
        7. 8.2.2.7 Output Filter Inductors
        8. 8.2.2.8 Output Filter Capacitors
      3. 8.2.3 Application Curves
  9. 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. 11.2 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

1 Features

  • Input Voltage Range of 2.85 V to 5.5 V
  • Factory EEPROM Set Output Voltages from 0.8 V to 3.3 V in 100-mV Increments
  • Maximum Load Current of 2 A
  • Voltage Mode Control
  • Internal Type-Three Compensation
  • Switching Frequency of 500 kHz or 1.5 MHz
  • Low Standby Current of 10 µA
  • Internal 60-mΩ MOSFET Switches
  • Standard Voltage Options 0.8/1/1.2/1.5/1.8/2.5/3.3 V

2 Applications

  • Low Voltage Point of Load Regulation
  • Local Solution for FPGA/DSP/ASIC Core Power
  • Broadband Networking and Communications Infrastructure
  • Portable Computing

    • space

3 Description

The LM2852 synchronous buck regulator is a high frequency step-down switching voltage regulator capable of driving up to a 2A load with excellent line and load regulation. The LM2852 can accept an input voltage between 2.85 V and
5.5 V and deliver an output voltage that is factory programmable from 0.8 V to 3.3 V in 100-mV increments. The LM2852 is available with a choice of two switching frequencies –500 kHz (LM2852Y) or 1.5 MHz (LM2852X). It also features internal, type-three compensation to deliver a low component count solution. The exposed-pad HTSSOP-14 package enhances the thermal performance of the LM2852.

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
LM2852 HTSSOP (14) 5.00 mm × 4.40 mm
  1. For all available packages, see the orderable addendum at the end of the data sheet.

Typical Application Circuit

LM2852 20127001.gif

3.1 Efficiency vs ILOAD

LM2852 20127002.gif