ZHCS447C SEPTEMBER 2011 – April 2018 TPS84210
PRODUCTION DATA.
- 1 特性
- 2 應用
- 3 說明
- 4 修訂歷史記錄
- 5 Pin Configuration and Functions
- 6 Specifications
- 7 Functional Block Diagram
- 8 Application and Implementation
- 9 Capacitor Recommendations For The TPS84210 Power Supply
- 10Transient Response
- 11Application Schematics
- 12Power Good (PWRGD)
- 13Power-Up Characteristics
- 14Remote Sense
- 15Output On/Off Inhibit (INH)
- 16Slow Start (SS/TR)
- 17Overcurrent Protection
- 18Synchronization (CLK)
- 19Sequencing (SS/TR)
- 20Programmable Undervoltage Lockout (UVLO)
- 21Thermal Shutdown
- 22Layout Guidelines
- 23Layout Example
- 24EMI
- 25器件和文檔支持
- 26機械、封裝和可訂購信息
13 Power-Up Characteristics
When configured as shown in the front page schematic, the TPS84210 produces a regulated output voltage following the application of a valid input voltage. During the power-up, internal soft-start circuitry slows the rate that the output voltage rises, thereby limiting the amount of in-rush current that can be drawn from the input source. The soft-start circuitry introduces a short time delay from the point that a valid input voltage is recognized. Figure 21 shows the start-up waveforms for a TPS84210, operating from a 5-V input and with the output voltage adjusted to 1.8 V. The waveform is measured with a 2-A constant current load.
Figure 21. Start-Up Waveforms