Datasheet

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SGLS264A − SEPTEMBER 2004 − REVISED JUNE 2008
8
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APPLICATION INFORMATION
The TPS797xx family of low-dropout (LDO) regulators have been optimized for use in micropower applications.
They feature extremely low dropout voltages and ultralow quiescent current (1.2 µA typically).
A typical application circuit is shown in Figure 14.
C1
0.1 µF
PG
OUT
4
3
IN
NC
GND
2
1
5
V
O
0.47 µF
+
TPS797xx
100 kΩ
+
−
Figure 14. Typical Application Circuit
external capacitor requirements
Although not required, a 0.1-µF or larger input bypass capacitor, connected between IN and GND and located
close to the TPS797xx, is recommended, especially when a highly resistive power supply is powering the LDO
in addition to other devices.
Like all low-dropout regulators, the TPS797xx requires an output capacitor connected between OUT and GND
to stabilize the internal control loop. The minimum recommended capacitance is 0.47 µF. Any 0.47-µF capacitor
is suitable. Capacitor values larger than 0.47 µF are acceptable.