TLE 4241GM

Manufacturer Part NumberTLE 4241GM
ManufacturerInfineon Technologies
TLE 4241GM datasheets

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Specifications of TLE 4241GM

PackagesPG-DSO-8TopologyLinear
Vs (min)4.0 VVs (max)45.0 V
Vq (max)40.0 VIq (max)70.0 mA
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LED Driver with Adjustable Current
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 <
•
Very small SMD-Package
•
Green Product (RoHS compliant)
•
AEC Qualified
Functional Description
The TLE 4241 GM 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 load 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 PG-DSO-8-16
(Micro 8) package. Protection circuits prevent damage to the device in case of overload,
short circuit, reverse polarity and overtemperature. 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 application.
The implemented features such as adjustable output current, the high/low current switch
and the provided PWM input make the device well suited for a broad range of LED and
other applications.
Type
TLE 4241 GM
Data Sheet
T
< 150 C
j
Package
PG-DSO-8-16
1
TLE 4241 GM
P-DSO-8-3, -6, -7, -8, -9
Rev. 1.3, 2007-03-19

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TLE 4241GM Summary of contents

  • Page 1

    LED Driver with Adjustable Current 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 ...

  • Page 2

    Circuit Description I ST PWM SET 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 ...

  • Page 3

    Figure 2 Pin Configuration (top view) Table 1 Pin Definitions and Functions Pin No. Symbol 1 GND PWM 4 SET 5 GND 6 REF Data Sheet GND PWM 3 SET ...

  • Page 4

    Application Information µC Figure 3 Application Circuit Figure 3 shows a typical application with the TLE 4241 GM LED driver. The 3 LEDs are driven with an adequate supply current adjusted by the resistor variations due ...

  • Page 5

    PWM V PWM PWM SET V SET SET STL Figure 4 Function and Timing Diagram Data Sheet t SET ...

  • Page 6

    Table 2 Absolute Maximum Ratings T -40 C < < 150 C j Parameter Input Voltage Current Output Voltage Current Status Output Voltage Current Reference Input Voltage Current Pulse Width Modulation Input Voltage Current High/Low Current Input Voltage Current Temperatures ...

  • Page 7

    Table 3 Operating Range Parameter Input voltage Status output voltage SET voltage PWM voltage Junction temperature Reference Resistor Data Sheet Symbol Limit Values Min. Max – SET ...

  • Page 8

    Table 4 Electrical Characteristics REF respect to ground; positive current defined flowing into pin; unless otherwise specified Parameter Current consumption off mode Current consumption Current consumption Current consumption open ...

  • Page 9

    Table 4 Electrical Characteristics (cont’ REF respect to ground; positive current defined flowing into pin; unless otherwise specified Parameter Turn off delay time SET Input SET high level SET ...

  • Page 10

    Typical Performance Characteristics Output Current versus External Resistor, SET = H 100 Output Current versus Supply Voltage, SET = H 100 ...

  • Page 11

    Reference Voltage versus Junction Temperature 1. REF 1.23 1.21 1.19 1.17 1.15 - Data Sheet AED03340.VSD REF 80 °C 160 TLE 4241 GM Rev. 1.3, 2007-03-19 ...

  • Page 12

    PWM Pin Input Current versus PWM Voltage 2 PWM 1.5 1.0 0 SET Pin Input Current versus SET Voltage 2 SET 2.0 1.5 1.0 0 ...

  • Page 13

    Package Outlines 1.27 +0.1 0.41 -0.06 Index Marking 1) Does not include plastic or metal protrusion of 0.15 max. per side 2) Lead width can be 0.61 max. in dambar area Figure 5 PG-DSO-8-16 (Plastic Dual Small Outline) Green Product ...

  • Page 14

    Version Date Rev. 1.2 2004-04-13 Page 4, 9: Improved indication and explanation of the open Rev. 1.3 2007-03-19 Initial version of RoHS-compliant derivate of TLE 4241 GM Data Sheet Changes load detection function. Page 1: AEC certified statement added Page ...

  • Page 15

    ... Infineon Technologies Office. Infineon Technologies components may be used in life-support devices or systems only with the express written approval of Infineon Technologies failure of such components can reasonably be expected to cause the failure of that life-support device or system or to affect the safety or effectiveness of that device or system. Life support devices or systems are intended to be implanted in the human body or to support and/or maintain and sustain and/or protect human life ...

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