TLE 7469G V52 Infineon Technologies, TLE 7469G V52 Datasheet - Page 16

• Manufacturer Part Number: TLE 7469G V52
• Manufacturer: Infineon Technologies

Specifications of TLE 7469G V52

• Packages: PG-DSO-12
• Regulator Type: multiple output
• Output Voltage: 5V2.6V
• Accuracy: 2.0 %4.0 %
• Max. Output Current: 215mA200mA
• Dropout Voltage: 300mV

Figure 5
Watchdog Operation
The watchdog uses a fraction of the charge pump oscillator’s clock signal as timebase.
Connecting the DT pin to Q1 or to Q2 the watchdog timebase can be adjusted. The
watchdog can be turned off by a low level (
values used in this text refer to typ. values with DT connected to Q1 (fast timing).
Figure 6
reset output signal at the RO pin (microcontroller reset) is kept LOW for the reset delay
time T
starts the ignore window time
is ignored. Next the WWD starts the open window. When a valid trigger signal is detected
during the open window a closed window is initialized immediately. A trigger signal within
Data Sheet
V
V
V
V
V
V
V
RD
ROH
ROL
RO
RT1
RT2
V
Q1
Q2
I
shows the state diagram of the window watchdog (WWD). After power-on, the
of typ. 8 ms. With the LOW to HIGH transition of the signal at RO the device
Reset Function and Timing Diagram
T
RD
t
T
CW
RR
(32 ms). During this window the signal at the WDI pin
T
RD
V
16
DT
T
0.8 V) applied to the DT pin. The timing
RR
T
RD
Rev. 1.6, 2008-01-22
AET03532.VSD
TLE 7469
t
t
t
t