JAJSHM1B July   2008  – June 2019 TPS5450-Q1

PRODUCTION DATA.  

  1. 1 特長
  2. 2 アプリケーション
  3. 3 概要
    1.     Device Images
      1.      概略回路図と効率曲線
  4. 4 改訂履歴
  5. 5 Pin Configuration and Functions
    1.     Pin Functions
  6. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 Recommended Operating Conditions
    3. 6.3 Thermal Information
    4. 6.4 Dissipation Ratings
    5. 6.5 Electrical Characteristics
    6. 6.6 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  Oscillator Frequency
      2. 7.3.2  Voltage Reference
      3. 7.3.3  Enable (ENA) and Internal Slow Start
      4. 7.3.4  Undervoltage Lockout (UVLO)
      5. 7.3.5  Output Feedback (VSENSE) and Internal Compensation
      6. 7.3.6  Voltage Feedforward
      7. 7.3.7  Pulse-Width-Modulation (PWM) Control
      8. 7.3.8  Overcurrent Limiting
      9. 7.3.9  Overvoltage Protection
      10. 7.3.10 Thermal Shutdown
  8. 8 Application Information
    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  Boost Capacitor (BOOT)
        3. 8.2.2.3  Switching Frequency
        4. 8.2.2.4  Input Capacitors
        5. 8.2.2.5  Output Filter Components
          1. 8.2.2.5.1 Inductor Selection
          2. 8.2.2.5.2 Capacitor Selection
        6. 8.2.2.6  Output Voltage Setpoint
        7. 8.2.2.7  Boot Capacitor
        8. 8.2.2.8  Catch Diode
        9. 8.2.2.9  Output Voltage Limitations
        10. 8.2.2.10 Internal Compensation Network
      3. 8.2.3 Application Curves
  9. 9 Layout
    1. 9.1 Layout Guidelines
    2. 9.2 Layout Examples
    3. 9.3 Thermal Calculations
  10. 10デバイスおよびドキュメントのサポート
    1. 10.1 デバイス・サポート
      1. 10.1.1 デベロッパー・ネットワークの製品に関する免責事項
    2. 10.2 開発サポート
      1. 10.2.1 WEBENCH®ツールによるカスタム設計
    3. 10.3 ドキュメントの更新通知を受け取る方法
    4. 10.4 コミュニティ・リソース
    5. 10.5 商標
    6. 10.6 静電気放電に関する注意事項
    7. 10.7 Glossary
  11. 11メカニカル、パッケージ、および注文情報

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

6.5 Electrical Characteristics

TJ = –40°C to +125°C, VIN = 5.5 V to 36 V (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
SUPPLY VOLTAGE (VIN PIN)
IQ Quiescent current VSENSE = 2 V, Not switching, PH pin open 3 4.4 mA
Shutdown, ENA = 0 V 18 50 μA
UNDERVOLTAGE LOCKOUT (UVLO)
Start threshold voltage, UVLO 5.3 5.5 V
Hysteresis voltage, UVLO 330 mV
VOLTAGE REFERENCE
Voltage reference accuracy TJ = 25°C 1.202 1.221 1.239 V
IO = 0 A – 5 A 1.196 1.221 1.245
OSCILLATOR
Internally set free-running frequency 400 500 600 kHz
Minimum controllable on time 150 200 ns
Maximum duty cycle 87 89 %
ENABLE (ENA PIN)
Start threshold voltage, ENA 1.3 V
Stop threshold voltage, ENA 0.5 V
Hysteresis voltage, ENA 450 mV
Internal slow-start time (0~100%) 5.4 8 10 ms
CURRENT LIMIT
Current limit 5.7 7.5 9.0 A
Current limit hiccup time 13 16 21 ms
THERMAL SHUTDOWN
Thermal shutdown trip point 135 162 °C
Thermal shutdown hysteresis 14 °C
OUTPUT MOSFET
rDS(on) High-side power MOSFET switch VIN = 5.5 V 150 mΩ
110 230