TLE4309 Infineon Technologies Corporation, TLE4309 Datasheet

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TLE4309

Manufacturer Part Number
TLE4309
Description
Adjustable Linear Low Dropout Led Driver
Manufacturer
Infineon Technologies Corporation
Datasheet

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Part Number:
TLE4309G
Manufacturer:
Infineon Technologies
Quantity:
1 935
Part Number:
TLE4309G
Manufacturer:
Infineon
Quantity:
800
Adjustable Linear Low Dropout LED Driver
Features
Functional Description
The TLE4309 is an integrated adjustable constant current source for driving loads up to
500 mA. The output current level can be adjusted with an external shunt resistor.
Supplying high power LEDs with the TLE4309 ensures constant brightness independent
from supply voltage or LED forward voltage spread. Therefore, LED lifetime is extended
by protecting from overcurrent and overtemperature
The PWM/EN input permits LED brightness regulation by pulse width modulation.
Setting the pin to “low” switches off the IC entirely. Due to the high impedance of the
PWM/EN input, the TLE4309 can be used as a protected high side switch.
Protection circuits prevent from damage to the IC in case of overload, short circuit, and
reverse polarity. A chip temperature monitoring circuit shuts off the power stage and
prevents the IC from destruction under fault conditions.
In case of negative input voltage, a leakage current is flowing only from the output to the
input, hence the LED are protected against reverse supply. Input voltage peaks up to
45 V are absorbed by the IC, preventing the LEDs from overcurrent.
The TLE4309G is provided in the surface mounted PG-TO-263 package with excellent
thermal resistance.
Type
TLE4309G
Datasheet
Adjustable constant current up to 500 mA
Operating supply voltage range 4.5 V to 24 V
Maximum supply voltage up to 45 V
Low dropout voltage
PWM / ENABLE input
<< 1 µA quiescent current when disabled
Overtemperature protection
Short circuit proof
Reverse polarity protection
Operating junction temperature range: -40 C to 150 C
Suitable for applications up to 85 °C ambient temperature.
Green Product (RoHS compliant)
Package
PG-TO263-7-1
1
Marking
TLE4309
PG-TO263-7
Rev. 1.0, 2007-03-20
TLE4309

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TLE4309 Summary of contents

Page 1

... Green Product (RoHS compliant) Functional Description The TLE4309 is an integrated adjustable constant current source for driving loads up to 500 mA. The output current level can be adjusted with an external shunt resistor. Supplying high power LEDs with the TLE4309 ensures constant brightness independent from supply voltage or LED forward voltage spread ...

Page 2

... Due to its high input impedance, the PWM/EN pin can be used as an enable input. Connect the pin directly to the supply line, if its function is not needed. The minimum supply voltage calculates as the sum of the LED forward voltages, the TLE4309 dropout voltage and the maximum voltage drop across the reference resistor R . ...

Page 3

... Internally not connected. Leave open. 4 GND Ground reference; connect to heatsink area and to TAB. 5 REF Reference Input; connect to shunt resistor Internally not connected. Leave open Output. TAB Connect to heatsink area and to GND pin. Datasheet TAB P-TO-263 n.c REF Q PWM GND n. TLE4309 Rev. 1.0, 2007-03-20 ...

Page 4

... – – REF REF V -40 40 PWM PWM T -40 150 j T -50 150 stg ESD,HBM 4 TLE4309 Unit Remarks V – mA internally limited V – mA internally limited V – mA – V – mA – C – C – kV Human Body Model Rev. 1.0, 2007-03-20 1) ...

Page 5

... V 4 PWM T -40 150 1.8 REF Symbol Typical Limit Values R 78 thja thjc 5 TLE4309 Unit Remarks V – V – C – – Unit Remarks 1) K/W Footprint only 2 K/W 300mm heat sink area 2 K/W 600mm heat sink area K/W – 1 µm Cu, Rev ...

Page 6

... TLE4309 Unit Test Condition 6 REF R = 1.0 REF 6 REF R = 0.39 REF REF 300 0.39 < ...

Page 7

... A E D03503 6 REF 1.0 2.0 R REF PWM/EN Pin Input Current versus Voltage applied AED03504.VSD 0.47 REF AED03506.VSD 185 mV 180 175 170 165 160 - AED03505.VSD 1 Rev. 1.0, 2007-03-20 TLE4309 °C 160 ...

Page 8

... Green products are RoHS-Compliant (i.e Pb-free finish on leads and suitable for Pb-free soldering according to IPC/JEDEC J-STD-020). find all packages, sorts of packing and others on the Infineon Internet Page “Packages”: http://www.infineon.com/packages. SMD = Surface Mounted Device Datasheet 10 ±0.2 9.8 ±0.15 1. 8.5 0...0.15 6x1.27 0. 4.4 ±0.1 B 0.1 0.05 2.4 0.1 Dimensions in mm Rev. 1.0, 2007-03-20 TLE4309 GPT09114 ...

Page 9

... V is assumed. The maximum reference voltags minimum supply voltage sufficient for the example given above. 3. Determining the minimum and maximum LED forward current: The TLE4309 has an accuracy of < With a reference resistor of I output current will be between 251 mA and 272 mA. ...

Page 10

... Resistance - Theory and Practice” including extended package information. Datasheet V (= No. of LEDs * F,MIN,total well as the the maximum output q,MAX F,MIN,total Q,MAX I,MAX R th,j D,MAX the maximum supply F,MIN I * q,MAX I = 260 mA, the Q calculates: R needed in our example would th,j-a Rev. 1.0, 2007-03-20 TLE4309 P D,MAX ...

Page 11

... Version Date Rev. 1.0 2007-03-20 Final Datasheet and initial version of RoHS-compliant Datasheet Changes derivate of TLE4309G Page 1 and Page 8: RoHS compliance statement and green product feature added Page 1 and Page 8: Package changed to RoHS compliant version Legal Disclaimer updated 11 TLE4309 Revision History Rev. 1.0, 2007-03-20 ...

Page 12

Edition 2007-03-20 Published by Infineon Technologies AG 81726 Munich, Germany © 2007 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 ...

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