TLE7278-2 Datasheet, PDF (5/25 Pages) Infineon Technologies AG – Low Dropout Voltage Regulator

3.3
Pin Assignments (PG-SSOP-14 Exposed Pad)
TLE7278-2
Pin Configuration
52

*1'


(1

,
QF


QF
QF


QF
*1'


QF
:0


4
:0


:',
7/(B3,1&21),*B6623
69*
Figure 3 Pin Assignment PG-SSOP-14 Exposed Pad (top view)
3.4
Pin Definitions and Functions (PG-SSOP-14 Exposed Pad)
Table 1 Pin Definitions and Functions
Pin No.
Symbol
Function
1
RO
Reset Output
integrated 20 kΩ pull-up resistor;
leave open if not needed
2, 5
GND
Ground
connect to GND
3, 4, 10, 11, 12
n.c.
not connected
leave open or connect to GND
6
WM2
Watchdog Mode Bit 2
watchdog and reset mode selection, see Figure 5;
connect to Q or GND
7
WM1
Watchdog Mode Bit 1
watchdog and Reset mode selection, see Figure 5;
connect to Q or GND
8
WDI
Watchdog Input
trigger input for watchdog pulses;
pull down to GND if not needed and turn off the watchdog with WM1 and
WM2 pin
9
Q
Output Voltage
block to GND with a ceramic capacitor close to the IC terminals, respecting
the values given for its capacitance C_Q and ESR in “Functional Range” on
Page 7
13
I
Input Voltage
block to ground directly at the IC with a 100 nF ceramic capacitor
14
EN
Enable Input
low level disables the IC;
integrated pull-down resistor
Pad
–
Exposed Pad
connect to heatsink area;
connect to GND on PCB
Data Sheet
5
Rev. 1.2, 2009-04-28