TLF50281EL Infineon Technologies, TLF50281EL Datasheet - Page 27

• Manufacturer Part Number: TLF50281EL
• Manufacturer: Infineon Technologies

Specifications of TLF50281EL

• Packages: PG-SSOP-14
• Comment: Asyncronous low-Iq-Buck; 5V/500mA; Iq
• Vq (max): 5V
• Iq (max): 500.0 mA
• Iq (typ): 45.0 µA
• Output: Buck Converter

6.4
Electrical Characteristics: Watchdog
V
Pos.
Watchdog Mode Select WMSEL
6.4.1
6.4.2
6.4.3
6.4.4
Watchdog Input WI
6.4.5
6.4.6
6.4.7
6.4.8
6.4.9
6.4.10
6.4.11
6.4.12
Watchdog Output WO
6.4.13
6.4.14
6.4.15
Data Sheet
S
= 6.0 V to 40 V,
Parameter
Watchdog mode select,
high
Watchdog mode select, low
Watchdog mode select
input current
Watchdog mode select,
internal resistor to GND
High level input voltage
Low level input voltage
High level input current
Low level input current
Watchdog sampling time
Ignore window time
Watchdog period
Watchdog input, internal
resistor to GND
Output voltage low
Sink current limit
Leakage current
Electrical Characteristics Watchdog Function
T
j
= -40 °C to +150 °C, all voltages with respect to ground (unless otherwise specified)
Symbol
V
V
I
R
V
V
I
I
t
t
t
R
V
I
I
sam
IW
WD,p
WMSEL
WI,H
WI,L
WO,L,MAX
WO,H,MAX
WMSEL,H
WMSEL,L
WMSEL,INT
WI,H
WI,L
WI,INT
WO,L
Min.
4.00
–
–
1.25
4.00
–
–
–
0.40
0.80
25.6
51.2
25.6
51.2
1.25
–
1
–
27
Limit Values
Typ.
–
–
3
1.67
–
–
3
0.5
0.50
1.00
32.0
64.0
32
64
1.67
0.2
–
–
Max.
–
0.80
4
–
–
0.80
4
1
0.60
1.20
38.4
76.8
38.4
76.8
–
0.4
–
1
Unit
V
V
μA
ΜΩ
V
V
μA
μA
ms
ms
ms
ms
ms
ms
ΜΩ
V
mA
µA
Conditions
–
–
V
–
–
–
V
V
fast watchdog timing
slow watchdog timing
fast watchdog timing
slow watchdog timing
fast watchdog timing
slow watchdog timing
–
V
V
V
WMSEL
WI
WI
OUT
OUT
WO
= 5V
= 0.4V;
Reset and Watchdog
= 5V
=5V;
=5V;
Rev. 1.0, 2011-10-24
= 5V
I
V
TLF50281EL
WO
T
WO
j
< 105°C
= 1mA
= 0.4V