TLF50281EL Infineon Technologies, TLF50281EL Datasheet - Page 28

• 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

7
7.1
A valid high level at pin EN (
In off state the current consumption of the device is less than 2µA. An integrated pull down resistor at pin EN
(
The integrated thermal shutdown function turns off the power switch in case of overtemperature. The typ. junction
shutdown temperature is 175°C, with a min. of 155°C. After cooling down, the IC will automatically restart with a
soft start into normal operation. The thermal shutdown is an integrated protection function designed to prevent IC
destruction when operating under fault conditions. It should not be used for normal operation.
7.2
Electrical Characteristics: Enable, Bias and Thermal Shutdown
V
Pos.
Enable EN
7.2.1
7.2.2
7.2.3
7.2.4
7.2.5
7.2.6
7.2.7
7.2.8
7.2.9
Internal Over Temperature Protection
7.2.10
7.2.11
1) Specified by design. Not subject to production test.
Data Sheet
R
S
EN,INT
= 6.0 V to 40 V,
) ensures, that the device is switched off, if pin EN is left open.
Parameter
Current consumption, shut
down mode
Current consumption of
Current consumption of
Enable high signal valid
Enable low signal valid
Enable hysteresis
Enable high input current
Enable low input current
Enable, internal resistor to
GND
Over temperature shutdown
Over temperature shutdown
hysteresis
Enable and Thermal Shutdown
Description
Electrical Characteristics Module Enable, Bias and Thermal Shutdown
T
j
= -40 °C to +150 °C, all voltages with respect to ground (unless otherwise specified)
V
EN,hi
) turns the regulator on, a valid low level at pin EN (
V
V
CC
S
Symbol
I
I
I
V
V
V
I
I
R
T
T
q,OFF
q,ON,V_CC
q,ON,V_S
EN,hi
EN,lo
j,sd
j,sd_hyst
EN,hi
EN,lo
EN,HY
EN,INT
Min.
–
–
–
3.0
–
50
–
–
7
155
-
28
Limit Values
Typ.
0.1
–
15
–
–
200
–
0.1
12
175
15
20
400
20
195
Max.
2
60
–
0.8
3
1
–
Unit
µA
µA
µA
V
V
mV
µA
µA
ΜΩ
°C
K
Enable and Thermal Shutdown
V
Conditions
V
T
V
V
T
PFM mode
V
V
T
PFM mode
–
–
–
V
V
V
1)
1)
EN,lo
j
j
j
EN
EN
CC
EN
CC
EN
EN
EN
< 105°C;
< 105°C;
< 105°C;
= 0V;
= 5.0V;
= 5.0V;
= 16V
= 0.5V
= 3V
= 5.4V;
= 5.4V;
) turns the regulator off.
Rev. 1.0, 2011-10-24
TLF50281EL
V
V
V
S
S
S
= 16V
= 16V;
= 16V;