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TPS22916 Datasheet(PDF) 10 Page - Texas Instruments |
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TPS22916 Datasheet(HTML) 10 Page - Texas Instruments |
10 / 21 page VOUT VIN IREVERSE_CURRENT IRC IRCP(leak) VRCP 10 TPS22916 SLVSDO5 – JULY 2017 www.ti.com Product Folder Links: TPS22916 Submit Documentation Feedback Copyright © 2017, Texas Instruments Incorporated Feature Description (continued) Where • V10% is 10% of the initial output voltage • V90% is 90% of the initial output voltage • RL is the load resistance • CL is the load capacitance (1) With the Quick Output Discharge feature, the QOD resistance is in parallel with RL. This provides a lower total load resistance as seen from the load capacitance which discharges the capacitance faster resulting in a smaller tFALL. 8.3.3 Full-Time Reverse Current Blocking In a scenario where the device is enabled and VOUT is greater than VIN there is potential for reverse current to flow through the pass FET or the body diode. When the reverse current threshold (IRCB) is exceeded, the switch is disabled within tRCB. See Figure 3. Figure 3. Reverse Current 8.4 Device Functional Modes Table 1 describes what the VOUT pin is connected to for a particular device as determined by the ON pin Table 1. Device Function Table ON TPS22916B TPS22916C TPS22916CN TPS22916CL Below VIL Disabled Disabled Disabled Enabled Above VIH Enabled Enabled Enabled Disabled Table 2 shows the QOD functions. Table 2. QOD Function Table Device TPS22916B TPS22916C TPS22916CN TPS22916CL Enabled No No No No Disabled Yes Yes No Yes Table 3 shows the Smart-ON functions. Table 3. Smart-ON Functional Modes ON ON Pin Below VIL Pull down active Above VIH No pull down |
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