SLVSH67 September 2024 TPS26750
PRODUCTION DATA
请参考 PDF 数据表获取器件具体的封装图。
This functionality is firmware controlled and subject to change.
The ADCINx inputs to the internal ADC control the behavior of the TPS26750 in response to VBUS being supplied when VIN_3V3 is low (that is the dead-battery scenario). The ADCINx pins must be externally tied to the LDO_3V3 pin via a resistive divider as shown in the following figure. At power-up the ADC converts the ADCINx voltage and the digital core uses these two values to determine start-up behavior. The available start-up configurations include options for I2C target address of I2Ct_SCL/SDA, sink path control in dead-battery, and default configuration.
The device behavior is determined in several ways depending upon the decoded value of the ADCIN1 and ADCIN2 pins. The following table shows the decoded values for different resistor divider ratios. See Pin Strapping to Configure Default Behavior for details on how the ADCINx configurations determine default device behavior. See I2C Address Setting for details on how ADCINx decoded values affects default I2C target address.
DIV = RDOWN / (RUP + RDOWN)(1) | Without Using RUP or RDOWN | ADCINx Decoded Value(2) | ||
---|---|---|---|---|
MIN | Target | MAX | ||
0 | 0.0114 | 0.0228 | tie to GND | 0 |
0.0229 | 0.0475 | 0.0722 | N/A | 1 |
0.0723 | 0.1074 | 0.1425 | N/A | 2 |
0.1425 | 0.1899 | 0.2372 | N/A | 3 |
0.2373 | 0.3022 | 0.3671 | N/A | 4 |
0.3672 | 0.5368 | 0.7064 | tie to LDO_1V5 | 5 |
0.7065 | 0.8062 | 0.9060 | N/A | 6 |
0.9061 | 0.9530 | 1.0 | tie to LDO_3V3 | 7 |