Datasheet

VIN
VOUT
R1/C1
ON/OFF
Q1
Q2
R1
COUT
(2, 3)
R2
(1)
(5)
(6)
(4)
GPIO
Up to
8V
Input
CIN
VDD
Standby
Module
Always ON
Modules
VDD
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
SLVSBE9D –APRIL 2012–REVISED APRIL 2013 www.ti.com
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
TPS27081A requires only a single pull-up resistor. In this configuration the VOUT voltage rise time is
approximately 250ns when VIN = 5V.
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