ZHCSQ16 December   2022 TPS22995

PRODUCTION DATA  

  1. 1 特性
  2. 2 应用
  3. 3 说明
  4. 4 Revision History
  5. 5 Pin Configuration and 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 (VBIAS = 5 V)
    6. 6.6  Electrical Characteristics (VBIAS = 3.3 V)
    7. 6.7  Electrical Characteristics (VBIAS = 1.5 V)
    8. 6.8  Switching Characteristics (VBIAS = 5 V)
    9. 6.9  Switching Characteristics (VBIAS = 3.3 V)
    10. 6.10 Switching Characteristics (VBIAS = 1.5 V)
    11. 6.11 Typical Characteristics
  7. 7 Parameter Measurement Information
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Adjustable Slew Rate
      2. 8.3.2 Quick Output Discharge
      3. 8.3.3 ON and OFF Control
      4. 8.3.4 Thermal Shutdown
    4. 8.4 Device Functional Modes
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
      3. 9.2.3 Application Performance Plots
    3. 9.3 Power Supply Recommendations
    4. 9.4 Layout
      1. 9.4.1 Layout Guidelines
      2. 9.4.2 Layout Example
  10. 10Device and Documentation Support
    1. 10.1 接收文档更新通知
    2. 10.2 支持资源
    3. 10.3 Trademarks
    4. 10.4 Electrostatic Discharge Caution
    5. 10.5 术语表
  11. 11Mechanical, Packaging, and Orderable Information

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机械数据 (封装 | 引脚)
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订购信息

8.3.1 Adjustable Slew Rate

A capacitor to GND on the CT pin sets the slew rate, and the higher the Capacitor the higher the slew rate. Rise times are shown below.

Table 8-1 Rise Time vs CT vs VIN

CT Capacitor

VIN = 5.5 VVIN = 3.3 VVIN = 1.8 VVIN = 1.2 VVIN = 0.8 V

0 pF

96.2 µs72.2 µs47.8 µs36.6 µs28.2 us

220 pF

517 µs350 µs201 µs140 µs100 us
1000 pF2020 µs1350 µs754 µs516 µs360 us

4700 pF

9230 µs6190 µs3470 µs2380 µs1660 us
The following equation can be used to estimate the rise time for different VIN and CT capacitors:
Equation 1. tR = (0.3418VIN + 0.1036) × CT + 14.064VIN + 12.255

where

  • tR = Rise time in µs.
  • VIN = Input voltage in V.
  • CT = CT Capacitor in pF.