Datasheet

+
0.1 Fm
V
OUT
PG
RESET
V
IN
GND
TPS79718
MSP430
orEquivalent
-
V
CC
V
SS
0.47 Fm
1.8V
TPS797xx
SLVS332I –MARCH 2001–REVISED OCTOBER 2013 www.ti.com
The primary benefits of using the TPS797xx to power one power source
low-power digital devices include:
Figure 15 shows an application in which the
• Regulated output voltage that protects the device
TPS79718 is used to power TI’s MSP430 mixed
from battery droop and noise on the line (for
signal microcontroller.
example, switch bounce)
Minimal board space is needed to accommodate the
• Smooth, monotonic power up
DCK (SC70) packaged TPS79718, the 0.1μF output
• PG signal for controlled device RESET
capacitor, the 0.47μF input capacitor, and the pull-up
• Potential to use an existing 5V power rail to power
resistor on the PG pin.
a 3.3V or lower device
• Potential to provide separate digital and analog
power and ground supplies for a system with only
Figure 15. MSP430 Microcontroller Powered by the TPS79718 Regulator
space
REVISION HISTORY
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision H (April 2012) to Revision I Page
• Changed Figure 8 Y-axis unit from V to mV (typo) ............................................................................................................... 7
Changes from Revision G (November 2009) to Revision H Page
• Deleted sentence regarding thermal protection .................................................................................................................... 9
Changes from Revision F (May 2009) to Revision G Page
• Changed document title ........................................................................................................................................................ 1
• Deleted references to SOT323 package throughout document ........................................................................................... 1
• Changed test conditions for Electrical Characteristics table ................................................................................................. 3
• Changed output voltage accuracy test conditions from 10μA < I
OUT
< 10mA to 1mA < I
OUT
< 10mA .................................. 3
• Deleted line regulation maximum specification ..................................................................................................................... 3
• Changed PG trip threshold voltage test conditions from V
OUT
decreasing to V
OUT
increasing; deleted minimum and
maximum specifications ........................................................................................................................................................ 3
• Revised PG low output low voltage test conditions .............................................................................................................. 3
• Updated PG leakage current test conditions ........................................................................................................................ 3
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