TLE 4241GM Infineon Technologies, TLE 4241GM Datasheet - Page 4

• Manufacturer Part Number: TLE 4241GM
• Manufacturer: Infineon Technologies

Specifications of TLE 4241GM

• Packages: PG-DSO-8
• Topology: Linear
• Vs (min): 4.0 V
• Vs (max): 45.0 V
• Vq (max): 40.0 V
• Iq (max): 70.0 mA

Application Information
Figure 3
Figure 3
driven with an adequate supply current adjusted by the resistor
variations due to forward voltage spread of the LEDs are prevented. The luminosity
spread arising from the LED production process can be compensated via software by an
appropriate duty cycle applied to the PWM pin. Hence selection of the LEDs to forward
voltage as well as to luminosity classes can be spared. The slightly negative temperature
coefficient of the TLE 4241 GM output current protects the LEDs against over-
temperature stress if the IC is placed nearby the LEDs.
The voltage drop (
open load condition indicated at the status output pin ST. In case of open load, the
voltage drop will decrease below the lower status switching threshold
status output ST will be driven low. In normal operation, the voltage drop is above the
upper status threshold
also section Status Output at the Electrical Characteristics).
The function of ST, SET and PWM as well as their timings are shown in
Data Sheet
WD
shows a typical application with the TLE 4241 GM LED driver. The 3 LEDs are
R
µC
Application Circuit
V
V
Q
I
-
V
V
dr,H
Q
) across the TLE 4241 GM is monitored in order to detect an
10 k
, thus the open collector output ST is in high-ohmic state (see
22 µF
PWM
SET
RO
ST
W
4
TLE 4241G
TLE 4271
R
REF
I
Q
100 nF
R
REF
Rev. 1.3, 2007-03-19
. Thus brightness
V
TLE 4241 GM
dr,L
Figure
LA E67B
OSRAM
AED03098
. Hence, the
V
Batt
4.