ZHCSIX0H March   2009  – October 2018 LM5008A

PRODUCTION DATA.  

  1. 1 特性
  2. 2 应用
  3. 3 说明
    1.     Device Images
      1.      典型应用，基本降压稳压器
  4. 4 修订历史记录
  5. 5 Pin Configuration and Functions
    1.     Pin 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 Switching Characteristics
    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 Control Circuit Overview
      2. 7.3.2 Start-Up Regulator (VCC)
      3. 7.3.3 Regulation Comparator
      4. 7.3.4 Overvoltage Comparator
      5. 7.3.5 On-Time Generator and Shutdown
      6. 7.3.6 Current Limit
      7. 7.3.7 N-Channel Buck Switch and Driver
      8. 7.3.8 Thermal Protection
    4. 7.4 Device Functional Modes
      1. 7.4.1 Shutdown Mode
      2. 7.4.2 Active Mode
  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 Custom Design With WEBENCH® Tools
        2. 8.2.2.2 Selection Of External Components
        3. 8.2.2.3 Low-Output Ripple Configurations
      3. 8.2.3 Application Curves
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11器件和文档支持
    1. 11.1 器件支持
      1. 11.1.1 第三方产品免责声明
      2. 11.1.2 使用 WEBENCH® 工具创建定制设计
      3. 11.1.3 开发支持
    2. 11.2 文档支持
      1. 11.2.1 相关文档
        1. 11.2.1.1 PCB 布局资源
        2. 11.2.1.2 热设计资源
    3. 11.3 接收文档更新通知
    4. 11.4 社区资源
    5. 11.5 商标
    6. 11.6 静电放电警告
    7. 11.7 术语表
  12. 12机械、封装和可订购信息

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

6.5 Electrical Characteristics

TJ = 25°C and VIN = 48 V (unless otherwise noted)(1)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
VCC SUPPLY
VCC Reg VCC regulator output VIN = 48 V TJ = 25°C 7 V
TJ = –40°C to 125°C 6.6 7.4
VIN – VCC 6 V < VIN < 8.5 V 100 mV
VCC bypass threshold VIN increasing 8.5 V
VCC bypass hysteresis 300 mV
VCC output impedance VIN = 6 V 100 Ω
VIN = 10 V 8.8 Ω
VIN = 48 V 0.8 Ω
VCC current limit VIN = 48 V 9.2 mA
VCC UVLO VCC increasing 5.3 V
VCC UVLO hysteresis 190 mV
VCC UVLO filter delay 3 µs
IIN operating current FB = 3 V, VIN = 48 V TJ = 25°C 550 µA
TJ = –40°C to 125°C 750
IIN shutdown current RT/SD = 0 V TJ = 25°C 110 µA
TJ = –40°C to 125°C 176
CURRENT LIMIT
Current limit threshold TJ = 25°C 0.51 A
TJ = –40°C to 125°C 0.41 0.61
Current limit response time Iswitch overdrive = 0.1 A, time to switch off 350 ns
TOFF-1 Off-time generator FB = 0 V, RCL = 100 kΩ 35 µs
TOFF-2 Off-time generator FB = 2.3 V, RCL = 100 kΩ 2.56 µs
ON-TIME GENERATOR
TON – 1 VIN = 10 V, RON = 200 kΩ TJ = 25°C 2.77 µs
TJ = –40°C to 125°C 2.15 3.5
TON – 2 VIN = 95 V, RON = 200 kΩ TJ = 25°C 300 ns
TJ = –40°C to 125°C 200 420
Remote shutdown threshold Rising TJ = 25°C 0.7 V
TJ = –40°C to 125°C 0.4 1.05
Remote shutdown hysteresis 35 mV
MINIMUM OFF-TIME
Minimum off-timer VFB = 0 V 300 ns
REGULATION AND OV COMPARATORS
FB reference threshold Internal reference, trip point for switch ON TJ = 25°C 2.5 V
TJ = –40°C to 125°C 2.445 2.55
FB overvoltage threshold Trip point for switch OFF 2.875 V
FB bias current 100 nA
THERMAL SHUTDOWN
Tsd Thermal shutdown temperature 165 °C
Thermal shutdown hysteresis 25 °C
(1) All electrical characteristics having room temperature limits are tested during production with TA = TJ = 25°C. All hot and cold limits are specified by correlating the electrical characteristics to process and temperature variations and applying statistical process control.