TLE4241GM Infineon Technologies, TLE4241GM Datasheet - Page 4

• Manufacturer Part Number: TLE4241GM
• Description: IC, LED DRIVER, CONSTANT CURRENT, SMD-8
• Manufacturer: Infineon Technologies
• Type: Linear (Non-Switching)r

Specifications of TLE4241GM

• Led Driver Application: Automotive Lighting
• No. Of Outputs: 1
• Output Current: 60mA
• Output Voltage: 40V
• Input Voltage: 4V To 45V
• Dimming Control Type: PWM
• Topology: Constant Current
• Constant Current: Yes
• Number Of Outputs: 1
• Internal Driver: Yes
• Type - Primary: General Purpose
• Voltage - Supply: 4 V ~ 45 V
• Voltage - Output: 40V
• Mounting Type: Surface Mount
• Package / Case: DSO-8
• Operating Temperature: -40°C ~ 150°C
• Current - Output / Channel: 70mA
• Internal Switch(s): Yes
• Number Of Segments: 3
• Operating Supply Voltage: 4 V to 45 V
• Maximum Operating Temperature: + 150 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Frequency: -
• Efficiency: -
• Lead Free Status / Rohs Status: Details
• Other names: SP000014624; SP000410436; TLE4241GMNT; TLE4241GMT; TLE4241GMT

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. 1.2, 2004-04-13
. Thus brightness
V
TLE 4241 GM
dr,L
Figure
LA E67B
OSRAM
AED03098
. Hence, the
V
Batt
4.