TLE4290_07 INFINEON [Infineon Technologies AG], TLE4290_07 Datasheet - Page 2

• Manufacturer Part Number: TLE4290_07
• Description: 5-V Low Drop Voltage Regulator
• Manufacturer: INFINEON [Infineon Technologies AG]

Power Good
The Power Good PG pin informs e.g. the microcontroller in case the output voltage has
fallen below the lower threshold
battery voltage at first the power good signal remains LOW. When the output voltage has
reached the higher threshold
power good delay time
can be set by the user with an external capacitor at pin D according to the requirements
of the application.
The Power Good circuitry supervises the output voltage. In case
Power Good switching threshold
reaction time. The Power Good LOW signal is generated down to an output voltage
to 1 V. A LOW signal at the Power Good pin informs that the battery was lost and
memory is no longer valid.
The feature should be used in combination with a microcontroller with internal reset.
Figure 1
Data Sheet
I
1
Block Diagram
Reference
Band-
Gap-
t
rd
. Afterwards the power good output turns HIGH. The delay time
V
GND
Q,pgt-i
V
V
Q,pgt-d
Q,pgt-d
the power good output remains still LOW for the
TLE 4290
the PG output is set LOW after the Power Good
Saturation
of typ. 3.65 V. Connecting the regulator to a
Current
Control
2
and
Control
Power
Good
D
4
V
Q
AEB02823
falls below the lower
Rev. 1.7, 2007-03-20
5
2
Q
PG
TLE 4290
V
Q