ZHCSSO5A July 2023 – October 2023 TPS7H2140-SEP
PRODUCTION DATA
- 1
- 1 特性
- 2 應用
- 3 說明
- 4 Revision History
- 5 Pin Configuration and Functions
- 6 Specifications
- 7 Parameter Measurement Information
-
8 Detailed Description
- 8.1 Overview
- 8.2 Functional Block Diagram
- 8.3 Feature Description
- 8.4 Device Functional Modes
- 9 Application and Implementation
- 10Device and Documentation Support
- 11Mechanical, Packaging, and Orderable Information
8.3.6.2.2 Channel Off
When a channel is off, if a load is connected, the output is pulled down to GND. But if an open load occurs, the output voltage is close to the supply voltage (VIN – VOUTx < VOL_OFF), and the fault is reported out. VOL_OFF is between 1.6 and 2.6 V.
There is always a leakage current IF (maximum of 0.5 μA at 25℃ or 8 μA at 125℃), present on the output due to internal logic control path or external humidity, corrosion, and so forth. Thus, TI recommends an external pullup resistor to offset the leakage current when an open load is detected. The recommended pullup resistance is 20 kΩ.
Figure 8-9 Open-Load
Detection in Off-State