ZHCSS00AB March   2000  – June 2025 LP2985-N

PRODUCTION DATA  

  1.   1
  2. 特性
  3. 应用
  4. 说明
  5. Pin Configuration and Functions
  6. 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. Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagrams
    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. Application and Implementation
    1. 7.1 Application Information
      1. 7.1.1 Recommended Capacitor Types
        1. 7.1.1.1 Recommended Capacitors (Legacy Chip)
        2. 7.1.1.2 Recommended Capacitors (New Chip)
      2. 7.1.2 Input Capacitor Requirements
      3. 7.1.3 Output Capacitor Requirements
      4. 7.1.4 Noise Bypass Capacitor (CBYPASS)
      5. 7.1.5 Reverse Current
      6. 7.1.6 Power Dissipation (PD)
      7. 7.1.7 Estimating Junction Temperature
    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. 器件和文档支持
    1. 8.1 文档支持
      1. 8.1.1 相关文档
    2. 8.2 器件命名规则
    3. 8.3 接收文档更新通知
    4. 8.4 支持资源
    5. 8.5 商标
    6. 8.6 静电放电警告
    7. 8.7 术语表
  10. Revision History
  11. 10Mechanical, 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

Application Curves

at operating temperature TJ = 25°C, VIN = VOUT(NOM) + 1.0V or 2.5V (whichever is greater), IOUT = 1mA, ON/OFF pin tied to VIN, CIN = 1.0µF, and COUT = 4.7µF (unless otherwise noted)

LP2985-N Short-Circuit Current (Legacy Chip) at VIN = 6V
 
Figure 7-4 Short-Circuit Current (Legacy Chip) at VIN = 6V
LP2985-N Short-Circuit Current (Legacy Chip) at VIN = 16V
 
Figure 7-6 Short-Circuit Current (Legacy Chip) at VIN = 16V
LP2985-N Load
                        Transient Response (Legacy Chip)
 
Figure 7-8 Load Transient Response (Legacy Chip)
LP2985-N Load
                        Transient Response (Legacy Chip)
 
Figure 7-10 Load Transient Response (Legacy Chip)
LP2985-N Load
                        Transient Response (Legacy Chip)
 
Figure 7-12 Load Transient Response (Legacy Chip)
LP2985-N Line
                        Transient Response (Legacy Chip)
 
 
Figure 7-14 Line Transient Response (Legacy Chip)
LP2985-N Line
                        Transient Response (Legacy Chip)
 
 
Figure 7-16 Line Transient Response (Legacy Chip)
LP2985-N Line
                        Transient Response (Legacy Chip)
 
 
Figure 7-18 Line Transient Response (Legacy Chip)
LP2985-N Line
                        Transient Response (Legacy Chip)
 
 
Figure 7-20 Line Transient Response (Legacy Chip)
LP2985-N Turn-On Time (Legacy Chip)
 
Figure 7-22 Turn-On Time (Legacy Chip)
LP2985-N Turn-On Time (Legacy Chip)
 
Figure 7-24 Turn-On Time (Legacy Chip)
LP2985-N Turn-On Time (Legacy Chip)
 
Figure 7-26 Turn-On Time (Legacy Chip)
LP2985-N Turn-On Time (Legacy Chip)
 
Figure 7-28 Turn-On Time (Legacy Chip)
LP2985-N Short-Circuit Current (New
                        Chip) at VIN = 6V
VIN = 6V
Figure 7-5 Short-Circuit Current (New Chip) at VIN = 6V
LP2985-N Short-Circuit Current (New
                        Chip) at VIN = 16V
 
Figure 7-7 Short-Circuit Current (New Chip) at VIN = 16V
LP2985-N Load Transient Response
                        (New Chip)
dI/dt = 1A/μF
Figure 7-9 Load Transient Response (New Chip)
LP2985-N Load Transient (New
                        Chip)
dI/dt = 1A/μF
Figure 7-11 Load Transient (New Chip)
LP2985-N Load Transient Response
                        (New Chip)
dI/dt = 1A/μF
Figure 7-13 Load Transient Response (New Chip)
LP2985-N Line Transient Response
                        (New Chip)
VOUT = 3.3V, CBYP = 0nF, ΔVIN = 1V, IOUT = 1mA,
dV/dt = 1V/μF
Figure 7-15 Line Transient Response (New Chip)
LP2985-N Line Transient Response
                        (New Chip)
VOUT = 3.3V, CBYP = 0nF, ΔVIN = 1V, IOUT = 150mA,
dV/dt = 1V/μF
Figure 7-17 Line Transient Response (New Chip)
LP2985-N Line Transient Response
                        (New Chip)
VOUT = 3.3V, CBYP = 10nF, ΔVIN = 1V, IOUT = 1mA,
dV/dt = 1V/μF
Figure 7-19 Line Transient Response (New Chip)
LP2985-N Line Transient Response
                        (New Chip)
VOUT = 3.3V, CBYP = 10nF, ΔVIN = 1V, IOUT = 150mA,
dV/dt = 1V/μF
Figure 7-21 Line Transient Response (New Chip)
LP2985-N Turn-On Time (New
                        Chip)
 
Figure 7-23 Turn-On Time (New Chip)
LP2985-N Turn-On Time (New
                        Chip)
 
Figure 7-25 Turn-On Time (New Chip)
LP2985-N Turn-On Time (New
                        Chip)
COUT = 4.7μF
Figure 7-27 Turn-On Time (New Chip)
LP2985-N Turn-On Time (New
                        Chip)
COUT = 4.7μF
Figure 7-29 Turn-On Time (New Chip)