ZHCSGF3B July 2017 – January 2019 TPS7A92
PRODUCTION DATA.
- 1 特性
- 2 應(yīng)用
- 3 說(shuō)明
- 4 修訂歷史記錄
- 5 Pin Configuration and Functions
- 6 Specifications
-
7 Detailed Description
- 7.1 Overview
- 7.2 Functional Block Diagram
- 7.3 Feature Description
- 7.4 Device Functional Modes
- 8 Application and Implementation
- 9 Power Supply Recommendations
- 10Layout
- 11器件和文檔支持
- 12機(jī)械、封裝和可訂購(gòu)信息
封裝選項(xiàng)
機(jī)械數(shù)據(jù) (封裝 | 引腳)
- DSK|10
散熱焊盤(pán)機(jī)械數(shù)據(jù) (封裝 | 引腳)
- DSK|10
訂購(gòu)信息
8.1.1 Adjustable Output
The output voltage of the TPS7A9201 can be adjusted from 0.8 V to 5.2 V by using a resistor divider network as shown in Figure 38.
Figure 38. Adjustable Operation R1 and R2 can be calculated for any output voltage range using Equation 3. This resistive network must provide a current greater than or equal to 5 μA for optimum noise performance.
If greater voltage accuracy is required, take into account the output voltage offset contribution resulting from the feedback pin current (IFB) and use 0.1%-tolerance resistors.
Table 2 lists the resistor combination required to achieve a few of the most common rails using commercially-available, 0.1%-tolerance resistors to maximize nominal voltage accuracy and also abiding to the formula given in Equation 3.
Table 2. Recommended Feedback-Resistor Values
| VOUT(TARGET)
(V) |
FEEDBACK RESISTOR VALUES (1) | CALCULATED OUTPUT VOLTAGE (V) | |
|---|---|---|---|
| R1 (kΩ) | R2 (kΩ) | ||
| 0.8 | Short | Open | 0.800 |
| 1.00 | 2.55 | 10.2 | 1.000 |
| 1.20 | 5.9 | 11.8 | 1.200 |
| 1.50 | 9.31 | 10.7 | 1.496 |
| 1.80 | 1.87 | 1.5 | 1.797 |
| 1.90 | 15.8 | 11.5 | 1.899 |
| 2.50 | 2.43 | 1.15 | 2.490 |
| 3.00 | 3.16 | 1.15 | 2.998 |
| 3.30 | 3.57 | 1.15 | 3.283 |
| 5.00 | 10.5 | 2 | 5.00 |