ZHCSJ24A November   2018  – May 2019 TPS56339

PRODUCTION DATA.  

  1. 1 特性
  2. 2 应用
  3. 3 说明
    1.     Device Images
      1.      简化原理图
      2.      TPS56339 效率
  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 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 Advanced Emulated Current Mode Control
      2. 7.3.2 Enable and Adjusting Undervoltage Lockout
      3. 7.3.3 Soft Start and Pre-Biased Soft Start
      4. 7.3.4 Voltage Reference
      5. 7.3.5 Minimum ON-time, Minimum OFF-time and Frequency Foldback at Dropout Conditions
      6. 7.3.6 Overcurrent and Undervoltage Protection
      7. 7.3.7 Thermal Shutdown
    4. 7.4 Device Functional Modes
      1. 7.4.1 Shutdown Mode
      2. 7.4.2 Active Mode
      3. 7.4.3 CCM Operation
    5. 7.5 Light-Load 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 Custom Design With WEBENCH® Tools
        2. 8.2.2.2 Output Voltage Resistors Selection
        3. 8.2.2.3 Output Inductor Selection
        4. 8.2.2.4 Output Capacitor Selection
        5. 8.2.2.5 Input Capacitor Selection
        6. 8.2.2.6 Bootstrap Capacitor Selection
      3. 8.2.3 Undervoltage Lockout Set Point
      4. 8.2.4 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 接收文档更新通知
    2. 11.2 相关链接
    3. 11.3 社区资源
    4. 11.4 商标
    5. 11.5 静电放电警告
    6. 11.6 Glossary
  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

Limits apply over the recommended operating junction temperature (TJ ) range of –40°C to +125°C, unless otherwise stated. Minimum and maximum limits are specified through test, design or statistical correlation. Typical values represent the most likely parametric norm at TJ = 25 °C, and are provided for reference purposes only. Unless otherwise stated, the following conditions apply: VIN = 4.5 V to 24 V.
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
POWER SUPPLY (VIN PIN)
VIN Operation input voltage 4.5 24 V
IQ Non switching quiescent current First power on with no load, then force VFB to 1.2 V, VIN = 12 V 98 µA
ISHDN Shutdown supply current VIN = 12 V, VEN = 0 V 3 µA
VIN_UVLO Undervoltage lockout thresholds VIN Rising threshold 3.9 4.2 4.4 V
VIN_UVLO VIN Falling threshold 3.5 3.7 3.9 V
ENABLE (EN PIN)
VEN_RISE Enable threshold EN rising threshold 1.18 1.28 V
VEN_FALL EN falling threshold 1.08 1.12 V
IEN_INPUT Input current VEN = 1.0 V 1.2 µA
IEN_HYS Hysteresis current VEN = 1.5 V 3.1 µA
VOLTAGE REFERENCE (FB PIN)
VREF Reference voltage TJ = 25 °C 0.790 0.802 0.814 V
TJ = -40 °C to 125 °C 0.782 0.802 0.822 V
INTEGRATED MOSFETS
RDS_ON_HS High-side MOSFET On-resistance TJ = 25 °C, VBOOT-SW = 5 V 70 mΩ
RDS_ON_LS Low-side MOSFET On-resistance TJ = 25 °C, VIN = 12 V 35 mΩ
CURRENT LIMIT
IHS_LIMIT High-side MOSFET current limit 3.9 4.7 5.4 A
ILS_LIMIT Low-side MOSFET current limit VIN = 12 V 2.7 3.6 4.7 A
OUTPUT UNDERVOLTAGE PROTECTION
VUVP_HYS Output UVP threshold Hiccup detect (H→L) 62.5 %
Hysteresis 5 %
BOOT UVLO
VBOOT-SW BOOT UVLO threshold 2.2 V
OSCILLATOR
fSW Switching frequency 420 500 600 KHz
THERMAL SHUTDOWN
TSHDN(1) Thermal shutdown threshold 160 °C
THYS(1) Hysteresis 20 °C
(1) Not production tested