ZHCSJG8I July 2010 – October 2019 TPS63020 , TPS63021
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 Detailed Description
- 8 Application and Implementation
- 9 Power Supply Recommendations
- 10Layout
- 11器件和文檔支持
- 12機械、封裝和可訂購信息
8.2.3 Setting The Output Voltage
When the adjustable output voltage version TPS63020 is used, the output voltage is set by an external resistor divider. The resistor divider must be connected between VOUT, FB, and GND. The feedback voltage is 500 mV nominal. The low-side resistor R2 (between FB and GND) must be kept in the range of 200 kΩ. Use Equation 3 to calculate the high-side resistor R1 (between VOUT and FB).
Equation 3. 
where
- VFB= 500 mV
Table 3. Resistor Selection For Typical Output Voltages
| VOUT | R1 | R2 |
|---|---|---|
| 2.5 V | 750 kΩ | 180 kΩ |
| 3.3 V | 1 MΩ | 180 kΩ |
| 3.6 V | 1.1 MΩ | 180 kΩ |
| 4.5 V | 1.43 MΩ | 180 kΩ |
| 5 V | 1.6 MΩ | 180 kΩ |