ZHCSJO2C May   2019  – April 2020 TPS7B81-Q1

PRODUCTION DATA.  

  1. 1 特性
  2. 2 应用
  3. 3 说明
    1.     Device Images
      1.      典型应用原理图
  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 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 Device Enable (EN)
      2. 7.3.2 Undervoltage Shutdown
      3. 7.3.3 Current Limit
      4. 7.3.4 Thermal Shutdown
    4. 7.4 Device Functional Modes
      1. 7.4.1 Operation With VIN Lower Than 3 V
      2. 7.4.2 Operation With VIN Larger Than 3 V
  8. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Power Dissipation
        1. 8.1.1.1 Estimating Junction Temperature
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 Input Capacitor
        2. 8.2.2.2 Output Capacitor
      3. 8.2.3 Application Curve
  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 支持资源
    3. 11.3 商标
    4. 11.4 静电放电警告
    5. 11.5 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

6.6 Typical Characteristics

at TJ = –40°C to +150°C, VIN = 14 V, and VEN ≥ 2 V (unless otherwise noted)
TPS7B81-Q1 shutdown_current_vs_temp.gif
VEN = 0 V
Figure 1. Shutdown Current vs Ambient Temperature
TPS7B81-Q1 iq_vs_temp_3v3.gif
VOUT = 3.3 V
Figure 3. Quiescent Current vs Ambient Temperature
TPS7B81-Q1 dropout_vs_iout_3v3.gif
VOUT = 3.3 V, DRV package
Figure 5. Dropout Voltage vs Output Current
TPS7B81-Q1 dropout_vs_temp_3v3.gif
VOUT = 3.3 V
Figure 7. Dropout Voltage vs Ambient Temperature
TPS7B81-Q1 accuracy_vs_temp_3v3.gif
VOUT = 3.3 V, IOUT = 1 mA
Figure 9. Output Voltage vs Ambient Temperature
TPS7B81-Q1 25_to_150_acc_hist_v2.gif
3.3-V and 5-V options, IOUT = 1 mA
Figure 11. Temperature Drift Histogram (25ºC to 150ºC)
TPS7B81-Q1 accuracy_vs_vin_3v3.gif
VOUT = 3.3 V, IOUT = 1 mA
Figure 13. Output Voltage vs Input Voltage
TPS7B81-Q1 enable_voltage_vs_temp.gif
A.
Figure 15. Enable Voltage vs Ambient Temperature
TPS7B81-Q1 uvlo_vs_temp.gif
A.
Figure 17. UVLO vs Ambient Temperature
TPS7B81-Q1 D004_line_transient.gif
A.
VOUT = 3.3 V, CIN = 0 µF, COUT = 1 µF,
IOUT = 100 mA, Slew rate = 1 V/µs
Figure 19. Line Transient
TPS7B81-Q1 psrr_5v.gif
A.
VOUT = 5 V, CIN = 0 µF, COUT = 10 µF
Figure 21. PSRR vs Frequency
TPS7B81-Q1 noise.gif
CIN = 0.1 µF, COUT = 10 µF
Figure 23. Noise vs Frequency
TPS7B81-Q1 iq_vs_temp_5v.gif
VOUT = 5 V
Figure 2. Quiescent Current vs Ambient Temperature
TPS7B81-Q1 dropout_vs_iout_5v.gif
VOUT = 5 V, DRV Package
Figure 4. Dropout Voltage vs Output Current
TPS7B81-Q1 dropout_vs_temp_5v.gif
VOUT = 5 V
Figure 6. Dropout Voltage vs Ambient Temperature
TPS7B81-Q1 accuracy_vs_temp_5v.gif
VOUT = 5 V
Figure 8. Output Voltage vs Ambient Temperature
TPS7B81-Q1 neg40_to_25_acc_hist_v2.gif
3.3-V and 5-V options, IOUT = 1 mA
Figure 10. Temperature Drift Histogram (–40°C to +25°C)
TPS7B81-Q1 accuracy_vs_vin_5v.gif
VOUT = 5 V, IOUT = 1 mA
Figure 12. Output Voltage vs Input Voltage
TPS7B81-Q1 current_limit_vs_temp.gif
VOUT is shorted to 90% × VOUT(NOM)
Figure 14. Output Current Limit vs Ambient Temperature
TPS7B81-Q1 enable_current_vs_temp.gif
A.
Figure 16. Enable Current vs Ambient Temperature
TPS7B81-Q1 D005_startup.gif
VOUT = 5 V, CIN = 1 µF, COUT = 1 µF
Figure 18. Startup with enable
TPS7B81-Q1 D006_load_transient.gif
A.
VOUT = 5 V, CIN = 1 µF, COUT = 1 µF,
IOUT = 1 mA → 100 mA → 1 mA, Slew rate = 1 mA/µs
Figure 20. Load Transient
TPS7B81-Q1 psrr_3v3.gif
VOUT = 3.3 V, CIN = 0 µF, COUT = 10 µF
Figure 22. PSRR vs Frequency
TPS7B81-Q1 D014_SLVSDQ0.gif
Figure 24. Output Capacitance vs ESR Stability