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PDF TLE7278-2 Data sheet ( Hoja de datos )
| Número de pieza | TLE7278-2 | |
| Descripción | Low Dropout Voltage Regulator | |
| Fabricantes | Infineon Technologies | |
| Logotipo |  |
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Data Sheet, Rev. 1.2, April 2009
TLE7278-2
L o w D r o p o u twww.DataSheet4U.net V o l t a g e R e g u l a t o r
Automotive Power
1 page  
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 CQ 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
5 Page 
TLE7278-2
Block Description and Electrical Characteristics
Electrical Characteristics (cont’d)
VI = 13.5 V, Tj = -40 °C to +150 °C, all voltages with respect to ground, positive current flowing into pin
(unless otherwise specified)
Pos. Parameter
Symbol
Limit Values
Unit Conditions
Min. Typ. Max.
5.2.16 Low Level Input Voltage
5.2.17
5.2.18 High Level Input Current
Watchdog Mode Bit 1
VEN,L
–
–
0.5 V VQ = 0.02 V;
IQ = 5 mA; Tj < 125 °C
– – 0.3 V VQ = 0.02 V
IQ = 5 mA
IEN,H
–
3
4
µA VEN = 5 V
5.2.19 High Level Input Voltage
VWM1,H 4.00
–
–
V TLE7278-2GV50,
TLE7278-2EV50
5.2.20
2.65 – – V TLE7278-2GV33
5.2.21
2.30 – – V TLE7278-2GV26
5.2.22 Low Level Input Voltage
Watchdog Mode Bit 2
VWM1,L
–
–
0.80 V
–
5.2.23 High Level Input Voltage
VWM2,H 4.00
–
–
V TLE7278-2GV50,
TLE7278-2EV50
5.2.24
2.65 – – V TLE7278-2GV33
5.2.25
2.30 – – V TLE7278-2GV26
5.2.26 Low Level Input Voltage
Watchdog Input WDI
VWM2,L
–
–
0.80 V
–
5.2.27 High Level Input Voltage
VWDI,H
4.0
–
–
V TLE7278-2GV50,
TLE7278-2EV50
5.2.28
2.65 – – V TLE7278-2GV33
5.2.29
2.30 – – V TLE7278-2GV26
5.2.30
5.2.31
5.2.32
5.2.33
Low Level Input Voltage
High Level Input Current
Low Level Input Current
Watchdog sampling time
VWDI,L
IWDI,H
IWDI,L
tsam
–
–
–
0.40
0.80
–
0.80 V
–
3 4 µA VWDI = 5 V
0.5 1
µA VWDI = 0 V; Tj < 80 °C
0.50 0.60 ms fast watchdog timing
1.00 1.20 ms slow watchdog timing
5.2.34 Ignore window time
tOW 25.6 32.0 38.4 ms fast watchdog timing
51.2 64.0 76.8 ms slow watchdog timing
5.2.35 Watchdog Period
tWD,p
25.6
51.2
32
64
38.4 ms fast watchdog timing
76.8 ms slow watchdog timing
5.2.36 Watchdog deactivation current IQ,WD_off 0.5
–
–
mA IQ decreasing
threshold
VI > VI, WD_on > 6.0 V
for TLE7278-2GV50,
TLE7278-2EV50
VI > VI,WD_on > 4.5 V
for TLE7278-2GV33,
TLE7278-2GV26
Data Sheet
11 Rev. 1.2, 2009-04-28
11 Page | ||
| Páginas | Total 25 Páginas | |
| PDF Descargar | [ Datasheet TLE7278-2.PDF ] | |
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