ZHCSSL3R April   2000  – February 2025 LP2980-N

PRODUCTION DATA  

  1.   1
  2. 1 特性
  3. 2 应用
  4. 3 说明
  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 Output Enable
      2. 6.3.2 Dropout Voltage
      3. 6.3.3 Current Limit
      4. 6.3.4 Undervoltage Lockout (UVLO)
      5. 6.3.5 Output Pulldown
      6. 6.3.6 Thermal Shutdown
    4. 6.4 Device Functional Modes
      1. 6.4.1 Normal Operation
      2. 6.4.2 Dropout Operation
      3. 6.4.3 Disabled
  8. 7 Application and Implementation
    1. 7.1 Application Information
      1. 7.1.1 Recommended Capacitor Types
        1. 7.1.1.1 Recommended Output Capacitors (Legacy Chip)
          1. 7.1.1.1.1 Tantalum Capacitors (Legacy Chip)
          2. 7.1.1.1.2 Aluminum Electrolytic Capacitors (Legacy Chip)
          3. 7.1.1.1.3 Multilayer Ceramic Capacitors (Legacy Chip)
        2. 7.1.1.2 Recommended Output Capacitors (New Chip)
      2. 7.1.2 Input Capacitor Requirements
      3. 7.1.3 Estimating Junction Temperature
      4. 7.1.4 Power Dissipation (PD)
      5. 7.1.5 Reverse Current
    2. 7.2 Typical Application
      1. 7.2.1 Design Requirements
      2. 7.2.2 Detailed Design Procedure
        1. 7.2.2.1 ON/OFF Input Operation
      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 Device Support
      1. 8.1.1 第三方产品免责声明
      2. 8.1.2 Device Nomenclature
    2. 8.2 接收文档更新通知
    3. 8.3 支持资源
    4. 8.4 Trademarks
    5. 8.5 静电放电警告
    6. 8.6 术语表
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information

4 Pin Configuration and Functions

Figure 4-1 DBV Package,5-Pin SOT-23(Top View)
Table 4-1 Pin Functions
PIN TYPE(1) DESCRIPTION
NO. NAME
1 IN I Input supply pin. Use a capacitor with a value of 1µF or larger from this pin to ground. See the Input Capacitor Requirements section for more information.
2 GND — Common ground (device substrate).
3 ON/OFF I Enable pin for the LDO. Driving the ON/OFF pin high enables the device. Driving this pin low disables the device. High and low thresholds are listed in the Electrical Characteristics table. Tie this pin to VIN if unused.
4 N/C — Do not connect. Device pin 4 is reserved for post packaging test and calibration of the LP2980-N VOUT accuracy. Leave device pin 4 floating. Do not connect this pin to any potential. Do not connect to ground. Any attempt to perform pin continuity testing on device pin 4 is discouraged. Continuity test results are variable depending on the actions of the factory calibration. Aggressive pin continuity testing (high voltage, or high current) on device pin 4 activates the trim circuitry, thus forcing VOUT to move out of tolerance.
5 OUT O Output of the regulator. Use a capacitor with a value of 2.2µF or larger from this pin to ground(2). See the Input Capacitor Requirements section for more information.
(1) I = Input, O = Output.
(2) The nominal output capacitance must be greater than 1μF. Throughout this document, the nominal derating on these capacitors is 50%. Make sure that the effective capacitance at the pin is greater than 1μF.