ZHCSQC5B December   2022  – February 2024 TPS7A21-Q1

PRODMIX  

  1.   1
  2. 特性
  3. 应用
  4. 说明
  5. Pin Configuration and Functions
  6. Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Thermal Information
    5. 5.5 Electrical Characteristics
    6. 5.6 Typical Characteristics
  7. Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1 Smart Enable (EN)
      2. 6.3.2 Low Output Noise
      3. 6.3.3 Active Discharge
      4. 6.3.4 Dropout Voltage
      5. 6.3.5 Foldback Current Limit
      6. 6.3.6 Undervoltage Lockout
      7. 6.3.7 Thermal Overload Protection (TSD)
    4. 6.4 Device Functional Modes
      1. 6.4.1 Device Functional Mode Comparison
      2. 6.4.2 Normal Operation
      3. 6.4.3 Dropout Operation
      4. 6.4.4 Disabled
  8. Applications and Implementation
    1. 7.1 Application Information
      1. 7.1.1 Recommended Capacitor Types
      2. 7.1.2 Input and Output Capacitor Requirements
      3. 7.1.3 Load Transient Response
      4. 7.1.4 Undervoltage Lockout (UVLO) Operation
      5. 7.1.5 Power Dissipation (PD)
      6. 7.1.6 Estimating Junction Temperature
      7. 7.1.7 Recommended Area For Continuous Operation
    2. 7.2 Typical Application
      1. 7.2.1 Design Requirements
      2. 7.2.2 Detailed Design Procedure
        1. 7.2.2.1 Power Dissipation and Device Operation
      3. 7.2.3 Application Curves
    3. 7.3 Power Supply Recommendations
    4. 7.4 Layout
      1. 7.4.1 Layout Guidelines
      2. 7.4.2 Layout Example
  9. Device and Documentation Support
    1. 8.1 Device Support
      1. 8.1.1 Device Nomenclature
    2. 8.2 Documentation Support
      1. 8.2.1 Related Documentation
    3. 8.3 接收文档更新通知
    4. 8.4 支持资源
    5. 8.5 Trademarks
    6. 8.6 静电放电警告
    7. 8.7 术语表
  10. Revision History
  11. 10Mechanical, Packaging, and Orderable Information

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

Typical Characteristics

at VIN = 3.6V, VOUT = 3.3V, IOUT = 1mA, CIN = 1µF, COUT = 1µF, and TA = 25°C (unless otherwise noted)

GUID-79D3FBDB-A924-4208-93B6-F39602CBB35C-low.png
VEN = 1V
Figure 5-1 Output Voltage Accuracy vs IOUT
GUID-D7D4E80B-7D82-460C-8E4C-C19D4E559D9A-low.png
VEN = 1V
Figure 5-3 Output Voltage Accuracy vs VIN
GUID-8C3B5322-9DF4-499B-8AA2-96F52704A910-low.gif
VEN = 1V
Figure 5-5 Load Regulation vs IOUT
GUID-01953C67-2CAE-45B1-8C43-AB7D94CE27D5-low.svg
VEN = 1V
Figure 5-7 Dropout Voltage vs IOUT
GUID-A29D43BF-C2F7-4266-99BC-EBC88979D4C2-low.png
VEN = 1V
Figure 5-9 IQ vs VIN
GUID-6EB637D1-A79B-4D82-86A9-4BB1E58B9A51-low.png
VEN = 1V
Figure 5-11 IGND vs IOUT
GUID-B9E06C11-F0EC-4EE4-9D2B-68975F42013A-low.svg
VEN = 0V, IOUT = 0mA
Figure 5-13 Shutdown Current vs VIN
GUID-1076B008-AC43-4151-823C-204423B2BCED-low.png
 
Figure 5-15 Enable Logic Threshold vs Temperature
GUID-55ACB794-946A-4BB7-9E30-47D00235EE53-low.png
VEN = 0.3V
Figure 5-17 Smart Enable Pulldown Resistor vs Temperature and VIN
GUID-17B70596-979C-48C7-9E2D-FF9C685583FE-low.png
VEN = 1V
Figure 5-19 VIN UVLO Threshold vs Temperature
GUID-CC615C5A-D986-43F6-A2FD-D93648FF744A-low.jpg
VIN = 0V to 4.3V, slew rate = 1V/μs, IOUT = 0mA
Figure 5-21 Start-Up With VEN After VIN
GUID-2AD0793D-CE51-4939-89A2-28EBAB217555-low.jpg
VIN = 0V to 4.3V, slew rate = 1V/μs, IOUT = 500mA
 
Figure 5-23 Start-Up With VEN = VIN
GUID-8EE27CF9-1047-4EE2-B523-EA9599920A3B-low.png
VIN = 4.3V, VEN = 0V to 4.3V, slew rate = 1V/μs,
IOUT = 0mA, COUT = 10μF
Figure 5-25 Start-Up Inrush Current
GUID-A5EF3159-48C0-4C53-8566-22D9C240FE91-low.svg
VEN = VIN, tr = tf = 5μs, IOUT = 500mA
Figure 5-27 Line Transient From 3.6V to 4.6V
GUID-20230802-SS0I-VBK0-S3BG-GGJZSZFCT2P4-low.png
VEN = VIN, tr = tf = 1μs
Figure 5-29 Load Transient From 1mA to 500mA
GUID-20230802-SS0I-JFLS-XWMR-FJKPJ93JS8GB-low.png
VEN = VIN, tr = tf = 1μs
Figure 5-31 Load Transient From 0mA to 500mA
GUID-20211122-SS0I-ZPTZ-SDD0-XJHK9GPPX5BZ-low.png
VEN = VIN
Figure 5-33 PSRR vs Frequency and IOUT
GUID-20211122-SS0I-M811-S9DD-MKC4G8ZPPCX8-low.png
VEN = VIN, IOUT = 500mA
Figure 5-35 PSRR vs Frequency and VIN
GUID-20220728-SS0I-FMSS-ZJNH-Z9T525LCBPCH-low.png
VEN = VIN, IOUT = 500mA
Figure 5-37 PSRR vs Frequency and COUT
GUID-603D0D4D-9E0F-4FC1-9A17-44A1561DF4CE-low.svg
VEN = VIN, IOUT = 500mA
Figure 5-39 Noise vs Frequency and VIN
GUID-A45AA6B0-2136-418A-95E9-A4A051254219-low.svg
VEN = VIN, IOUT = 20mA
Figure 5-41 Noise vs Frequency and COUT
GUID-BEB1195B-A438-4224-ADA4-4049C023C492-low.png
VEN = 1V
Figure 5-2 Output Voltage Accuracy vs IOUT
GUID-AFC9A2BC-7F81-4E44-BA6E-01FB891A5F84-low.png
VEN = 1V
Figure 5-4 Line Regulation vs VIN
GUID-44797397-4A2E-43DB-9A37-344BA3AAAF05-low.svg
VEN = 1V
Figure 5-6 Dropout Voltage vs IOUT
GUID-1F94A737-2FB1-4A2B-BC56-E33B4D9C1E6C-low.png
VEN = VIN
Figure 5-8 IQ vs VIN
GUID-55ED95A8-D711-4ADB-902B-5205684D4FFD-low.png
VEN = 1V
Figure 5-10 IGND vs IOUT
GUID-1629BF5F-7101-435D-B0A4-F43631E87520-low.svg
VEN = 0V, IOUT = 0mA
Figure 5-12 Shutdown Current vs VIN
GUID-226579F1-FA13-4149-9B5B-4DFA430439EE-low.svg
VEN = 1V
Figure 5-14 Foldback Current Limit
GUID-D19A4160-7B1C-4A65-B811-4117D8394126-low.svg
VEN = 6V, IOUT = 0mA
Figure 5-16 Enable Pin Leakage Current vs VEN – VIN
GUID-20220728-SS0I-F2RR-T2WD-0V1CXTC6DM2G-low.png
VEN = 0.3V
Figure 5-18 Output Pulldown Resistance vs
Temperature and VIN
GUID-43F08961-19BF-43B4-9AA9-B7F0C96EBB98-low.jpg
VIN = 0V to 4.3V, slew rate = 1V/μs, IOUT = 500mA
Figure 5-20 Start-Up With VEN Before VIN
GUID-B349AB09-66B3-4F1C-896B-07845D14F211-low.jpg
VIN = 0V to 4.3V, slew rate = 1V/μs, IOUT = 500mA
Figure 5-22 Start-Up With VEN After VIN
GUID-01037B02-FCB6-4DB1-8F94-F624500C3F2B-low.png
VIN = 4.3V, VEN = 0V to 4.3V, slew rate = 1V/μs,
IOUT = 0mA, COUT = 1μF
Figure 5-24 Start-Up Inrush Current
GUID-E47E62B8-147D-4B3C-ACA4-1B444448EC26-low.png
VEN = VEN(HI) to VOUT = 95% of VOUT(NOM), IOUT = 0mA
 
Figure 5-26 Start-Up Turn-On Time vs Temperature
GUID-0CE64029-DA63-4822-9C0B-2A8E79940568-low.svg
VEN = VIN, tr = tf = 5μs, IOUT = 1mA
Figure 5-28 Line Transient From 3.6V to 4.6V
GUID-20230802-SS0I-DLQS-M187-9DQZ7M1CX5CG-low.png
VEN = VIN, tr = tf = 200ns
Figure 5-30 Load Transient From 1mA to 500mA
GUID-20230802-SS0I-N3WN-W1WF-TM1N7MBCX7BM-low.png
VEN = VIN, tr = tf = 200ns
Figure 5-32 Load Transient From 0mA to 500mA
GUID-20211122-SS0I-LTZM-WRRC-6SNB5KC39HSB-low.png
VEN = VIN, IOUT = 20mA
Figure 5-34 PSRR vs Frequency and VIN
GUID-20220728-SS0I-4M22-SC1S-BKHCHKVTKK5V-low.png
VEN = VIN, IOUT = 20mA
Figure 5-36 PSRR vs Frequency and COUT
GUID-694E46C6-5FEE-44C1-8A8A-8988C52D1167-low.svg
VEN = VIN, IOUT = 20mA
Figure 5-38 Noise vs Frequency and VIN
GUID-20220809-SS0I-WDHH-1V6C-VPMCVBHC8W6C-low.png
VEN = VIN
Figure 5-40 Noise vs Frequency and IOUT
GUID-76E7348C-C84D-44F8-9DA7-FF3A4A498306-low.svg
VEN = VIN, IOUT = 500mA
Figure 5-42 Noise vs Frequency and COUT