JAJSPI9G June   2011  – April 2024 LP2951-Q1

PRODUCTION DATA  

  1.   1
  2. 1 特長
  3. 2 アプリケーション
  4. 3 概要
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Thermal Information
    5. 5.5 Electrical Characteristics
    6. 5.6 Typical Characteristics
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1 ERROR Function
      2. 6.3.2 Programming Output Voltage
    4. 6.4 Device Functional Modes
      1. 6.4.1 Shutdown Mode
  8. 7 Application and Implementation
    1. 7.1 Application Information
    2. 7.2 Typical Application
      1. 7.2.1 Design Requirements
        1. 7.2.1.1 Input Capacitor (CIN)
        2. 7.2.1.2 Output Capacitor (COUT)
      2. 7.2.2 Detailed Design Procedure
        1. 7.2.2.1 Capacitance Value
        2. 7.2.2.2 Capacitor Types
        3. 7.2.2.3 CBYPASS: Noise and Stability Improvement
        4. 7.2.2.4 ESR Range
      3. 7.2.3 Application Curves
    3. 7.3 Power Supply Recommendations
    4. 7.4 Layout
      1. 7.4.1 Layout Guidelines
      2. 7.4.2 Layout Example
  9. 8 Device and Documentation Support
    1. 8.1 ドキュメントの更新通知を受け取る方法
    2. 8.2 サポート・リソース
    3. 8.3 Trademarks
    4. 8.4 静電気放電に関する注意事項
    5. 8.5 用語集
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information

パッケージ・オプション

メカニカル・データ（パッケージ｜ピン）
サーマルパッド・メカニカル・データ
発注情報

4 Pin Configuration and Functions

GUID-708EF55A-0403-42A1-8F15-A5DFE0D7555C-low.gifFigure 4-1 D Package (LP2951-50-Q1),8-Pin SOIC(Top View)
GUID-9A428506-8203-43AB-8E8B-A17C3CC58769-low.gifFigure 4-2 DRG Package,8-Pin WSON With Exposed Thermal Pad(Top View)
Table 4-1 Pin Functions
PIN TYPE DESCRIPTION
NAME NO.
ERROR 5 O Active-low, open-collector error output. Goes low when VOUT drops by 6% of the nominal value.
FEEDBACK 7 I Determines the output voltage. Connect to VTAP (with OUTPUT tied to SENSE) to output the fixed voltage corresponding to the device version, or connect to a resistor divider to adjust the output voltage.
GND 4 — Ground
INPUT 8 I Supply input
OUTPUT 1 O Voltage output
SENSE 2 I Senses the output voltage. Connect to OUTPUT (with FEEDBACK tied to VTAP) to output the voltage corresponding to the device version.
SHUTDOWN 3 I Active-high input. Shuts down the device.
VTAP 6 O Tie to FEEDBACK to output the fixed voltage corresponding to the device version.