tle4678 Infineon Technologies Corporation, tle4678 Datasheet - Page 5

• Manufacturer Part Number: tle4678
• Description: Low Drop Out Linear Voltage Regulator 5 V Fixed Output Voltage
• Manufacturer: Infineon Technologies Corporation

3
3.1
Figure 2
3.2
Pin
1
2
3, 4, 5,
10, 11, 12
6
7
Datasheet
Symbol
WO
WADJ
GND
D
RADJ
Pin Configuration
Pin Assignment
Pin Assignment PG-DSO-14 Package
Pin Definitions and Functions
Function
Watchdog Output
Open collector output with an internal pull-up resistor to the output Q.
An additional external pull-up resistor to the output Q is optional.
Leave open if the watchdog function is not needed.
Watchdog Activating Threshold Adjust
An external resistor to GND determines the watchdog activating threshold.
Connect directly to GND for disabling the watchdog.
Connect directly to GND if the watchdog function is not needed.
Connect to output Q via 270 k resistor for permanently activating the watchdog.
Ground
Interconnect the GND pins on PCB.
Connect to heat sink area.
Reset Delay and Watchdog Timing
Connect a ceramic capacitor D (pin 6) to GND for reset delay and watchdog timing
adjustment.
Leave only open if both, the reset and the watchdog function are not needed.
Reset Switching Threshold Adjust
For reset threshold adjustment connect to a voltage divider from output Q to GND.
For triggering the reset at the internally determined threshold, connect this pin directly to
GND.
Connect directly to GND if the reset function is not needed.
WADJ
RADJ
GND
GND
GND
WO
D
1
2
3
4
5
6
7
5
P inout_SO14 .vsd
14
13
12
11
10
9
8
GND
GND
GND
Q
WI
RO
I
Rev. 1.0, 2008-07-31
Pin Configuration
TLE4678