TLF50281EL Infineon Technologies, TLF50281EL Datasheet - Page 31

• 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

9
Note: The following information is given as a hint for the implementation of the device only and shall not be
Figure 14
Note: This is a very simplified example of an application circuit. The function must be verified in the real application
Figure 15
Data Sheet
Part-No.
C
C
C
D
L
R1
R2
R3
R4
R5
To µP
From
regarded as a description or warranty of a certain functionality, condition or quality of the device.
µP
V
OUT
IN2
IN3
OUT
CATCH
S
Bill of Material for Application Diagram
Application Information
Application Diagram
D
1A/100V
47µF/50V
100nF/50V
10µF/25V
10µH
330 kΩ
100 kΩ
100 kΩ
100 kΩ
47 kΩ
Value
IN
V
C
CC
IN1
R3
L
IN
electrolytic
ceramic
ceramic
10BQ100 Schottky
MSS1278 T
0.25 W
0.25 W
0.25 W
0.25 W
0.25 W
Type
R5
C
IN2
SYNC
FREQ
C
EN
WO
WI
IN3
WMSEL
TLF50281EL
Generator
Oscillator
Reference
Soft Start
Bandgap
Temperature
Ramp
Watchdog
Shutdown
Enable
Converter
Over
AVX
AVX
AVX
International Rectifier
Coilcraft
Panasonic
Panasonic
Panasonic
Panasonic
Panasonic
Buck
Manufacturer
GND
31
Generator
Reset
GND
SUPPLY
INT.
VS
GND
SWO
FB
RTADJ
RO
D
CATCH
L
IN
For improving EME
1 A current capability
4.7 µH also possible
V
V
f
, C
D
OSC
IN
Remark
RT
RT
IN1
depending on application
set to 4.3 V
set to 4.3 V
suppression of EME,
set to 2.2 MHz
and C
Application Information
L
IN3
OUT
R1
R2
recommended for
Rev. 1.0, 2011-10-24
R4
TLF50281EL
C
OUT
To µP
V
CC