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| 5-V Low-Drop Fixed-Voltage Regulator TLE 4264 Features * * * * * * * Output voltage tolerance 2 % Low-drop voltage Very low current consumption Overtemperature protection Short-circuit proof Suitable for use in automotive electronics Reverse polarity SOT-223 Type TLE 4264 G Functional Description Ordering Code Q67006-A9139 Package P-SOT223-4-4 (SMD) TLE 4264 is a 5-V low-drop fixed-voltage regulator in an SOT-223 package. The IC regulates an input voltage VI in the range 5.5 V < VI < 45 V to VQrated = 5.0 V. The maximum output current is more than 120 mA. This IC is shortcircuit-proof and features temperature protection that disables the circuit at overtemperature. Dimensioning Information on External Components The input capacitor Ci is necessary for compensating line influences. Using a resistor of approx. 1 in series with Ci, the oscillating of input inductivity and input capacitance can be damped. The output capacitor CQ is necessary for the stability of the regulating circuit. Stability is guaranteed at values CQ 10 F and an ESR 10 within the operating temperature range. Data Sheet Rev. 2.1 1 2000-10-10 TLE 4264 4 1 2 3 V GND VQ AEP01526 Figure 1 Pin Configuration (top view) Pin Definitions and Functions Pin 1 2, 4 3 Symbol Function Input voltage; block to ground directly on IC with ceramic capacitor Ground 5-V output voltage; block to ground with 10-F capacitor, ESR 10 VI GND VQ Circuit Description The control amplifier compares a reference voltage, which is kept highly precise by resistance adjustment, to a voltage that is proportional to the output voltage and drives the base of the series transistor via a buffer. Saturation control, working as a function of load current, prevents any over-saturation of the power element. The IC is protected against overload, overtemperature and reverse polarity. Data Sheet Rev. 2.1 2 2000-10-10 TLE 4264 Temperature Sensor Saturation Control and Protection Circuit 3 Control Amplifier Input 1 Output Buffer Adjustment Bandgap Reference 2,4 GND AEB01527 Figure 2 Block Diagram Data Sheet Rev. 2.1 3 2000-10-10 TLE 4264 Absolute Maximum Ratings Tj = - 40 to 150 C Parameter Symbol Limit Values min. Input Input voltage Input current Output Output voltage Output current Ground Current Temperatures Junction temperature Storage temperature Operating Range Input voltage Junction temperature Thermal Resistances Junction-ambient Junction-pin4 1) Unit Notes max. VI II - 42 - 45 - V - - limited internally VQ IQ -1 - 32 - V - - limited internally IGND 50 - mA - Tj Tstg - - 50 150 150 C C - - VI Tj 5.5 - 40 45 150 V - - C Rthj-a Rthj-pin4 - - 85 20 K/W K/W 1) - Worst case, regarding peak temperature; zero airflow; mounted an a PCB 80 300 mm2. x 80 x 1.5 mm3, heat sink area Data Sheet Rev. 2.1 4 2000-10-10 TLE 4264 Characteristics VI = 13.5 V; - 40 C Tj 125 C, unless specified otherwise Parameter Symbol Limit Values min. Output voltage Output-current limiting typ. 5.0 max. 5.1 V 5 mA IQ 100 mA 6 V VI 28 V - Unit Test Conditions VQ 4.9 IQ 120 - - - - - - 160 - 9 0.25 - 15 54 - 400 15 0.5 40 30 - mA Current consumption Iq = II - IQ Iq Current consumption Iq = II - IQ Iq Drop voltage Load regulation Supply-voltage regulation Power Supply ripple rejection 1) A mA V mV mV dB IQ = 1 mA IQ = 100 mA IQ = 100 mA1) IQ = 5 to 100 mA VI = 6 V VI = 6 to 28 V IQ = 5 mA fr = 100 Hz Vr = 0.5 Vpp Vdr VQ VQ PSRR Drop voltage = 13.5 V). VI - VQ (measured where VQ has dropped 100 mV from the nominal value obtained at VI = Data Sheet Rev. 2.1 5 2000-10-10 TLE 4264 Input 5.5 to 45 V C i 1 3 Output TLE 4264G 2,4 10 F AES01528 Figure 3 Application Circuit Data Sheet Rev. 2.1 6 2000-10-10 TLE 4264 Drop Voltage VDR versus Output Current IQ VDR 800 mV 700 600 AED01978 Current Consumption Iq versus Input Voltage Vi 15 AED01979 q mA 10 500 T = 125 C j R L = 50 400 300 200 T = 25 C j 5 R L = 100 100 0 25 0 50 75 100 125 mA 175 0 10 20 30 40 V 50 V Q Current Consumption Iq versus Output Current IQ 12 AED01980 Current Consumption Iq versus Output Current IQ 3.0 AED01981 q mA 10 q mA 2.5 8 Vi = 13.5 V 6 2.0 1.5 4 1.0 Vi = 13.5 V 2 0.5 0 0 50 100 mA 150 0 0 5 10 15 20 mA 30 Q Q Data Sheet Rev. 2.1 7 2000-10-10 TLE 4264 Output Voltage VQ versus Temperature Tj 5.20 VQ V 5.10 Vi = 13.5 V 5.00 AED01982 Output Current IQ versus Input Voltage Vi 200 AED01983 Q mA 150 Tj = 25 C 4.90 100 T = 125 C j 4.80 50 4.70 4.60 -40 0 40 80 120 C 160 Tj 0 0 10 20 30 40 V 50 V Output Voltage VQ versus Input Voltage Vi 6 VQ V 5 AED01984 R L = 50 4 3 2 1 0 0 2 4 6 8 V 10 V Data Sheet Rev. 2.1 8 2000-10-10 TLE 4264 Package Outlines P-SOT223-4-4 (Plastic Small Outline Transistor) A 6.50.2 3 0.1 B 4 +0.2 acc. to DIN 6784 0.1 max 1.6 0.1 7 0.3 15max 1 0.7 0.1 2 3 2.3 4.6 0.5 min 0.28 0.04 Weight approx. 0.15 g Sorts of Packing Package outlines for tubes, trays etc. are contained in our Data Book "Package Information" SMD = Surface Mounted Device Data Sheet Rev. 2.1 9 Dimensions in mm 2000-10-10 GPS05560 0.25 M A 0.25 M B 3.5 0.2 TLE 4264 Edition 2000-10-10 Published by Infineon Technologies AG, St.-Martin-Strasse 53, D-81541 Munchen, Germany (c) Infineon Technologies AG 2000. All Rights Reserved. Attention please! The information herein is given to describe certain components and shall not be considered as warranted characteristics. Terms of delivery and rights to technical change reserved. We hereby disclaim any and all warranties, including but not limited to warranties of noninfringement, regarding circuits, descriptions and charts stated herein. Infineon Technologies is an approved CECC manufacturer. Information For further information on technology, delivery terms and conditions and prices please contact your nearest Infineon Technologies Office in Germany or our Infineon Technologies Representatives worldwide (see address list). Warnings Due to technical requirements components may contain dangerous substances. For information on the types in question please contact your nearest Infineon Technologies Office. Infineon Technologies Components may only be used in life-support devices or systems with the express written approval of Infineon Technologies, if a 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. If they fail, it is reasonable to assume that the health of the user or other persons may be endangered. Data Sheet Rev. 2.1 10 2000-10-10 |
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