Type Package
TLE4241GM P-DSO-8-9
Adjustable Current LITIX™ Linear
TLE4241GM
P-DSO-8-3, -6, -7, -8, -9
Data Sheet 1 Rev. 1.4, 2015-10-05
Features
• Adjustable constant output current
• Wide input voltage range
• Low drop voltage
• Open load detection
• Overtemperature protection
• Short circuit proof
• Reverse polarity proof
• Wide temperature range: -40 °C < Tj < 150 °C
• Very small SMD-Package
• Green Product (RoHS compliant)
• AEC Qualified
Functional Description
The TLE4241GM is an integrated adjustable constant current source. It provides an
output current adjustable via different means (SET, PWM, reference resistor) which is
kept nearly independent from lo ad and supply voltage changes. The IC is designed to
supply LEDs under the severe conditions of automotive applications resulting in constant
brightness and extended LED lifetime. It is provided in the very small P-DSO-8-9
(Micro 8) package. Protection circuits prevent damage to the device in case of overload,
short circuit, reverse polarity and overtemp erature. The connected LEDs are protected
against reverse polarity as well as excess voltages up to 45 V. A status output allows
handling of open load and short circuit at the main output.
A PWM input offers the possibility to adjust the LED brightness by pulse width
modulation.
With an implemented high/low current switch the output current level can be reduced e.g.
for brake/tail light applicati on.
The implemented features such as adjustable output current, the high/low current switch
and the provided PWM input ma ke the device well sui ted fo r a broad ran ge of LED an d
other applications.
Data Sheet 2 Rev. 1.4, 2015-10-05
TLE4241GM
Circuit Description
Figure 1 Block Diagram
An internal reference voltage of typ. 1.20 V supplies the REF pin which is connected to
GND via an external resistor. In the SET = H mode the reference current flowing on the
REF pin is mirrored with an amplification to form the desired output current. The typ.
output current in the SET = H mode calculates:
(1)
The output current is shown as a function of the reference resistance on Page 10 for the
high as well as for the low current mode.
With the PWM input the LED brightness can be regulated via duty cycle. Also PWM = L
sets the TLE4241 in sleep mode resulting in a very low current consumption of << 1 μA
typ. Due to the high impedance of the PWM input (see timing diagram IPWM versus VPWM
on Page 12) the PWM pin can thus also be used as an Enable input.
AEB03003
Regulation
High
Regulation
Low
Reference
Voltage
Status
Control
V/I Converter
Q
REF
SET
PWM
ST
I
GND
IQtyp,/mA 1.20
RREF/kΩ
---------------------- 487 0.1+×=
TLE4241GM
Data Sheet 3 Rev. 1.4, 2015-10-05
Figure 2 Pin Configuration (top view)
Table 1 Pin Definitions and Functions
Pin No. Symbol Function
1GNDGround; internally connected to pin 5
2STStatus Output; open collector output, connect to external
pull-up resistor (10 kΩ or higher)
3PWMPulse Width Modulation Input; if not needed connect to VI
4 SET High/Low Current Input; choice of current level
5GNDGround; internally connected to pin 1
6REFReference Input; connect to GND via an external resistor to
adjust the output current
7QOutput
8IInput; block to GND directly at the IC with a 100 nF ceramic
capacitor
AEP03002
81GND I
ST 2 7
PWM 3 6
SET 4 5
Q
REF
GND
Data Sheet 4 Rev. 1.4, 2015-10-05
TLE4241GM
Application Information
Figure 3 Application Circuit
Figure 3 shows a typical application with the TLE4241GM LITIXTM Lin ear. The 3 LEDs
are driven with an adequate supply current adjusted by the resistor RREF. Thus
brightness 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 TLE4241GM output current protects the LEDs
against over-temperature stress if the IC is placed nea rby the LEDs.
The voltage drop (VI - VQ) across the TLE4241GM is monitored in order to detect an
open load condition indicated at the status output pin ST. In case of open load, the
voltage drop will decrease bel ow the lower status switching threshold Vdr,L. Hence, the
status output ST wi ll be driven low. In normal operation , the voltage drop is above the
upper status threshold Vdr,H, thus the open collector output ST is in high-ohmic state (see
also section Status Output at the Electric al Characteristics).
The function of ST, SET and PWM as well as their timings are shown in Figure 4.
AED03098
TLE 4241G
REF
R
µC SET
PWM
ST
TLE 4271
WD R
Q
V
I
Q
Batt
V
LA E67B
OSRAM
W
RO
22 µF 100 nF
10 k
Ω
TLE4241GM
Data Sheet 5 Rev. 1.4, 2015-10-05
Figure 4 Function and Timing Diagram
Open Load
AET03339.VSD
VI
t
VPWM
VPWM, H
t
VPWM, L
VSET
VSET, H
t
VSET, L
47
10
mA
IQ
t
VST
t
VSTL
tSET, H
tSET, L
tPWM, ON
tPWM, OFF
Data Sheet 6 Rev. 1.4, 2015-10-05
TLE4241GM
Note: Maximum ratings are absolute ratings; exceeding any one of these values may
cause irreversible damage to the integrated circuit.
Table 2 Absolute Maximum Ratings
-40 °C < Tj < 150 °C
Parameter Symbol Limit Values Unit Remarks
Min. Max.
Input
Voltage VI-42 45 V –
Current II– – mA internally limited
Output
Voltage VQ-1 40 V –
Current IQ– – mA internally limited
Status Output
Voltage VST -0.3 40 V –
Current IST – 5 5 mA internally limited
Reference Input
Voltage VREF -0.3 7 V –
Current IREF -2 2 mA –
Pulse Width Modulation Inp ut
Voltage VPWM -40 40 V –
Current – -1 1 mA –
High/Low Cur rent Input
Voltage VSET -40 40 V –
Current ISET -1 1 mA –
Temperatures
Junction temperature Tj-40 150 °C–
Storage temperature Tstg -50 150 °C–
Thermal Resistances
Junction ambient Rthja – 105 K/W 1)
1) Worst case regarding peak temperature; mounted on PCB 80 × 80 × 1.5 mm3, 35 μm Cu, 300 mm2 heat sink
area.
TLE4241GM
Data Sheet 7 Rev. 1.4, 2015-10-05
Table 3 Operating Range
Parameter Symbol Limit Values Unit Remarks
Min. Max.
Input voltage VI445V–
Status outpu t vol t age VST –16V–
SET voltage VSET 040V–
PWM voltage VPWM 040V–
Junction temperature Tj-40 150 °C–
Reference Resistor RREF 7100kΩSET = H
4.7 18 kΩSET = L
Data Sheet 8 Rev. 1.4, 2015-10-05
TLE4241GM
Table 4 Electrical Characteristics
9V ≤ VI ≤ 16 V; RREF = 10 kΩ; VPWM ≥ VPWM,H; -40 °C < Tj < 150 °C; all voltages with
respect to ground; positive current defined flowing into pin; unless otherwise specified
Parameter Symbol Limit Values Unit Test Condition
Min. Typ. Max.
Current consumption off
mode IqOFF –0.14μAPWM = L, TJ < 85 °C;
VI ≤ 13.5 V
Current consumption IqL –47mASET = L; VQ = 6 V
Current consumption IqH –57mASET = H; VQ = 6 V
Current consumption
open load IqL,O ––8mASET = L; VQ open
Current consumption
open load IqH,O ––8mASET = H; VQ open
Output
Output current IQ7 8.4 9.5 mA SET = L, VQ = 6 V
–8.6–mASET = L, VQ = 4 V
Output current IQ50 58.5 65 mA SET = H, VQ = 6 V
– 60.0 – mA SET = H, VQ = 4 V
Current Ratio IQH/IQL 678––
Output current limit IQmax – 83 – mA SET = L; RREF = 0 Ω
Output current limit IQmax – 83 – mA SET = H; RREF = 0 Ω
Drop voltage Vdr – 0.2 0.5 V SET = L;
IQ = 80% of IQ,nom,L
Drop voltage Vdr – 0.3 0.5 V SET = H;
IQ = 80% of IQ,nom,H
PWM Input
PWM high level VPWM,H 2.0––V–
PWM low level VPWM,L ––0.5V–
PWM input current
high level IPWM,H – 220 500 μAVPWM = 5.0 V
PWM input current
low level IPWM,L -10 – 10 μAVPWM = 0.0 V
Turn on delay time tPWM,ON 0530μs 20%/80% IQ, see
Figure 4
TLE4241GM
Data Sheet 9 Rev. 1.4, 2015-10-05
Turn off delay time tPWM,OFF 01030μs 20%/80% IQ, see
Figure 4
SET Input
SET high level VSET,H 2.0––V–
SET low level VSET,L ––0.5V–
SET input current
high level ISET,H – 220 500 μAVSET = 5.0 V
SET input current
low level ISET,L -10 – 10 μAVSET = 0.0 V
Delay time L -> H tSET,H ––30μs 20%/80% IQ, see
Figure 4
Delay time H -> L tSET,L ––30μs 20%/80% IQ, see
Figure 4
Status Output
Lower status switching
threshold Vdr,L 0.15––V(VI - VQ) decre asing
SET = L
0.15––V(
VI - VQ) decreasing
SET = H
Upper status switching
threshold Vdr,H ––0.7V(VI - VQ) increasing
SET = L
––0.7V(
VI - VQ) increasing
SET = H
Status low voltage VSTL ––0.4V(VI - VQ) < Vdr,L
IST = 1.0 mA
Leakage current ISTLK ––10μA(VI - VQ) > Vdr,H
VST = 5.0 V
Table 4 Electrical Characteristics (cont’d)
9V ≤ VI ≤ 16 V; RREF = 10 kΩ; VPWM ≥ VPWM,H; -40 °C < Tj < 150 °C; all voltages with
respect to ground; positive current defined flowing into pin; unless otherwise specified
Parameter Symbol Limit Values Unit Test Condition
Min. Typ. Max.
Data Sheet 10 Rev. 1.4, 2015-10-05
TLE4241GM
Typical Performance Characteristics
Output Current versus
External Resistor, SET = H
Output Current versus
Supply Voltage, SET = H
Output Current versus
External Resistor, SET = L
Output Current versus
Supply Voltage, SET = L
AED03333.VSD
5RREF
IQ
0
10
20
30
40
50
60
70
80
100
10 20 50 100
kΩ
mA SET = H
VQ = 6 V
AED03335.VSD
0VI
V
0
10
30
50
70
20
40
60
80
100
5 1015202530 40
VQ = 6 V
RREF = 10 kΩ
SET = H
mA
IQ
AED03334.VSD
5RREF
IQ
0
2
4
6
8
10
12
14
16
20
10 20 50 100
kΩ
mA SET = L
VQ = 6 V
AED03336.VSD
0VI
V
0
2
6
10
14
4
8
12
16
20
5 1015202530 40
VQ = 6 V
RREF = 10 kΩ
SET = L
mA
IQ
Data Sheet 11 Rev. 1.4, 2015-10-05
TLE4241GM
Reference Voltage versus
Junction Temperature
Data Sheet 12 Rev. 1.4, 2015-10-05
TLE4241GM
PWM Pin Input Current versus
PWM Voltage
SET Pin Input Current versus
SET Voltage
PWM Pin Input Current versus
PWM Voltage
SET Pin Input Current versus
SET Voltage
AED03332.VSD
0VPWM
5 1015202530 V40
0
0.5
1.0
1.5
2.0
mA
IPWM
AED03338.VSD
0VSET
V
0
0.5
1.0
1.5
2.0
2.5
5 1015202530 40
mA
ISET
AED03331.VSD
0VPWM
123456 V8
0
100
200
300
400
µA
IPWM
AED03337.VSD
0VSET
123456 V8
0
100
200
300
400
µA
ISET
TLE4241GM
Data Sheet 13 Rev. 1.4, 2015-10-05
Package Outlines
Figure 5 P-DSO-8-9 (Plastic Dual Small Outline)
Green Product (RoHS compliant)
To meet the world-wide customer requirements for environmentally friendly products
and to be compliant with government regulations the device is available as a green
product. Green products are Ro HS-Compliant (i.e Pb-free finish on lead s and suitable
for Pb-free soldering according to IPC/JEDEC J-STD-020).
1
) Does not include plastic or metal protrusion of 0.15 max. per sid
e
-0.06
-0.2
+0.1
5
0
.41
8x
1
1)
4
8
1.27
5
A
0.1
0.2 MA
(1.45)
0.175
1.75 MAX.
B
B
6
±0.2
0.64
4
-0.2
0.19
+0.06
0.35 x 45°
1)
±0.25
MAX.8°
I
ndex
M
arking
±0.07
2
) Lead width can be 0.61 max. in dambar area
GPS01229
You can find all of our packages, sorts of packing and others in our
Infineon Internet Page “Products”: http://www.infineon.com/products.
Dimensions in mm
SMD = Surface Mounted Device
TLE4241GM
Revision History
Data Sheet 14 Rev. 1.4, 2015-10-05
Version Date Changes
Rev. 1.2 2004-04-13 Page 4, 9: Improved indication and expl anation of the open
load detectio n function.
Rev. 1.3 2007-03-19 Initial version of RoHS-compliant derivate of TLE4241GM
Page 1: AEC certified statement added
Page 1 and Page 13: RoHS compliance statement and
Green product feature added
Page 1 and Page 13: Package changed to RoHS compliant
version
Legal Disclaimer updated
Rev. 1.4 2015-07-09 Electrical Characteristics updated Page 8
Edition 2015-10-05
Published by
Infineon Technologies AG
81726 Munich, Germany
© 2004 Infineon Technologies AG
All Rights Reserved.
Legal Disclaimer
The information given in this document shall in no event be regarded as a guarantee of conditions or
characteristics. With respect to any examples or hints given herein, any typical values stated herein and/or any
information regard ing the application of t he device, Infineon Technologies hereby disclaims any and all warranties
and liabilities of any kind, including without limit ation, warranties of non-infringement of intellectual property rights
of any third party.
Information
For further information on technology, delivery terms and conditions and prices, pl ease contact the nearest
Infineon Technologies Office (www.infineon.com).
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