SNVS482F January   2007  – December 2015

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
    6. 6.6 Timing Requirements
    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 Undervoltage Lockout (UVLO)
      2. 7.3.2 Supply Sequencing
      3. 7.3.3 Reverse Voltage
      4. 7.3.4 Soft-Start
      5. 7.3.5 Setting The Output Voltage
      6. 7.3.6 Enable (EN)
    4. 7.4 Device Functional Modes
      1. 7.4.1 Input Voltage
      2. 7.4.2 Bias Voltage
      3. 7.4.3 Enable (EN) Operation
  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 Capacitors
          1. 8.2.2.1.1 Input Capacitor
          2. 8.2.2.1.2 Output Capacitor
          3. 8.2.2.1.3 Bias Capacitor
          4. 8.2.2.1.4 Setting the Output Voltage
          5. 8.2.2.1.5 Feed Forward Capacitor, CFF
        2. 8.2.2.2 Power Dissipation and Heat Sinking
      3. 8.2.3 Application Curves
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Examples
  11. 11Device and Documentation Support
    1. 11.1 Documentation Support
      1. 11.1.1 Related Documentation
    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

封装选项

机械数据 (封装 | 引脚)
散热焊盘机械数据 (封装 | 引脚)
订购信息

5 Pin Configuration and Functions

KTW Package
7-Pin DDPAK/TO-263
Top View
LP38852-ADJ 20213902.gif
NDZ Package
7-Pin TO-220
Top View
LP38852-ADJ 20213903.gif
DDA Package
8-Pin SO PowerPAD
Top View
LP38852-ADJ 20213904.gif

Pin Functions

PIN TYPE DESCRIPTION
NAME DDPAK/TO-263 TO-220 SO PowerPAD
ADJ 5 5 1 O The feedback connection to set the output voltage
BIAS 7 7 3 I The supply for the internal control and reference circuitry.
EN 2 2 6 I Device enable, High = On, Low = Off.
GND 4 4 4 GND Ground
IN 3 3 7 I The unregulated voltage input
N/C - - 8 — No internal connection
OUT 6 6 2 O The regulated output voltage
SS 1 1 5 O Soft-start capacitor connection. Used to control the rise time of VOUT at turnon.
TAB TAB TAB — — The KTW and NDZ TAB is a thermal and electrical connection that is physically attached to the backside of the die, and used as a thermal heat-sink connection.
DAP — — DAP — The SO PowerPAD DAP is a thermal connection only that is physically attached to the backside of the die, and used as a thermal heat-sink connection.