ZHCS447C SEPTEMBER   2011  – April  2018 TPS84210

PRODUCTION DATA.  

  1. 1 特性
  2. 2 应用
  3. 3 说明
    1.     Device Images
      1.      简化应用
      2.      效率与输出电流间的关系
  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 Package Specifications
    3. 6.3 Thermal Information
    4. 6.4 Electrical Characteristics
    5. 6.5 Switching Characteristics
    6. 6.6 Typical Characteristics (VIN = 5 V)
    7. 6.7 Typical Characteristics (VIN = 3.3 V)
  7. 7 Functional Block Diagram
  8. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Adjusting The Output Voltage
  9. 9 Capacitor Recommendations For The TPS84210 Power Supply
    1. 9.1 Capacitor Technologies
      1. 9.1.1 Electrolytic, Polymer-Electrolytic Capacitors
      2. 9.1.2 Ceramic Capacitors
      3. 9.1.3 Tantalum, Polymer-Tantalum Capacitors
    2. 9.2 Input Capacitor
    3. 9.3 Output Capacitor
  10. 10Transient Response
  11. 11Application Schematics
  12. 12Power Good (PWRGD)
  13. 13Power-Up Characteristics
  14. 14Remote Sense
  15. 15Output On/Off Inhibit (INH)
  16. 16Slow Start (SS/TR)
  17. 17Overcurrent Protection
  18. 18Synchronization (CLK)
  19. 19Sequencing (SS/TR)
  20. 20Programmable Undervoltage Lockout (UVLO)
  21. 21Thermal Shutdown
  22. 22Layout Guidelines
  23. 23Layout Example
  24. 24EMI
  25. 25器件和文档支持
    1. 25.1 接收文档更新通知
    2. 25.2 社区资源
    3. 25.3 商标
    4. 25.4 静电放电警告
    5. 25.5 术语表
  26. 26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

9.3 Output Capacitor

The required output capacitance is determined by the output voltage of the TPS84210. See Table 3 for the amount of required capacitance. The required output capacitance must include at least one 47 μF ceramic capacitor. For applications where the ambient operating temperature is less than 0°C, an additional 100 μF polymer-tantalum capacitor is recommended. When adding additional non-ceramic bulk capacitors, low-ESR devices like the ones recommended in Table 5 are required. The required capacitance above the minimum is determined by actual transient deviation requirements. See Table 4 for typical transient response values for several output voltage, input voltage and capacitance combinations. Table 5 includes a preferred list of capacitors by vendor.

Table 3. Required Output Capacitance

VOUT RANGE (V) MINIMUM REQUIRED COUT (µF)
MIN MAX
0.8 < 1.8 147(1)
1.8 < 3.3 100(2)
3.3 3.6 47(2)
(1) Minimum required must include at least 1 × 47 μF ceramic capacitor plus 1 × 100 μF polymer-tantalum capacitor.
(2) Minimum required must include at least 47 μF of ceramic capacitance.

Table 4. Output Voltage Transient Response

CIN1 = 1 × 47 μF CERAMIC, CIN2 = 220 μF POLYMER-TANTALUM, LOAD STEP = 1 A, 1 A/μs
VOUT (V) VIN (V) COUT1 Ceramic COUT2 BULK VOLTAGE DEVIATION (mV) PEAK-PEAK (mV) RECOVERY TIME (μs)
0.8 3.3 47 µF 100 µF 30 55 70
47 µF 330 µF 20 35 70
5 47 µF 100 µF 30 50 65
47 µF 330 µF 20 35 65
1.2 3.3 47 µF 100 µF 35 65 65
47 µF 330 µF 25 50 80
5 47 µF 100 µF 35 70 65
47 µF 330 µF 25 45 75
1.8 3.3 47 µF 100 µF 45 80 70
47 µF 330 µF 35 65 90
5 47 µF 100 µF 40 65 70
47 µF 330 µF 35 65 90
2.5 5 47 µF 100 µF 60 100 70
2 × 47 µF - 75 140 75
3.3 5 47 µF 100 µF 70 130 80
47 µF - 90 180 90

Table 5. Recommended Input/Output Capacitors(1)

VENDOR SERIES PART NUMBER CAPACITOR CHARACTERISTICS
WORKING VOLTAGE (V) CAPACITANCE (µf) ESR(2) (mΩ)
Murata X5R GRM32ER61C476K 16 47 2
TDK X5R C3225X5R0J107M 6.3 100 2
Murata X5R GRM32ER60J107M 6.3 100 2
TDK X5R C3225X5R0J476K 6.3 47 2
Murata X5R GRM32ER60J476M 6.3 47 2
Sanyo POSCAP 10TPE220ML 10 220 25
Kemet T520 T520V107M010ASE025 10 100 25
Sanyo POSCAP 6TPE100MPB 6.3 100 25
Sanyo POSCAP 2R5TPE220M7 2.5 220 7
Kemet T530 T530D227M006ATE006 6.3 220 6
Kemet T530 T530D337M006ATE010 6.3 330 10
Sanyo POSCAP 2TPF330M6 2.0 330 6
Sanyo POSCAP 6TPE330MFL 6.3 330 15
(1) Capacitor Supplier Verification
Please verify availability of capacitors identified in this table.
RoHS, Lead-free and Material Details
Please consult capacitor suppliers regarding material composition, RoHS status, lead-free status, and manufacturing process requirements.
(2) Maximum ESR @ 100 kHz, 25°C.