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TPS27081ADRVR Fiches technique(PDF) 7 Page - Texas Instruments |
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TPS27081ADRVR Fiches technique(HTML) 7 Page - Texas Instruments |
7 / 14 page VIN VOUT R1/C1 ON/OFF Q1 Q2 R1 COUT (2, 3) R2 (1) (5) (6) (4) GPIO Up to 8V Input CIN VDD Component: R1 = xkΩ Note: Use a higher value of R1 to minimize IQ Standby Module Always ON Modules VDD VOUT rise time Components = 470µs VIN = 5.0V : R1 = xk R2 = 3.3k C1 = 120nF Ω Ω VIN VOUT R1/C1 ON/OFF Q1 Q2 R1 C1 R2 COUT (2, 3) R2 (1) (5) (6) (4) GPIO 3-5V Input TFT LCD Module CIN VIN TPS27081A www.ti.com SLVSBE9A – APRIL 2012 – REVISED JULY 2012 APPLICATION EXAMPLES TFT LCD Module Inrush Current Control Figure 4. Inrush Current Control Using TPS27081A LCD panels require inrush current control to prevent permanent system damages during turn-ON and turn-OFF events. Standby Power Isolation Figure 5. Standby Power Generation Using TPS27081A Many applications have some always ON modules to support various core functions. However, some modules are selectively powered ON or OFF to save power and multiplexing of various on board resources. Such modules that are selectively turned ON or OFF require standby power generation. In such applications TPS27081 requires only a single pull-up resistor. In this configuration the VOUT voltage rise time is approximately 250ns when VIN = 5V. Copyright © 2012, Texas Instruments Incorporated Submit Documentation Feedback 7 Product Folder Link(s): TPS27081A |
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