Low-Drop Voltage Tracker TLE 4250 G Features • • • • • • • • • • • • Output tracking tolerance ≤ ± 0.5% 50 mA output current Combined Tracking/Enable input Very low current consumption in off mode Low drop voltage Suitable for use in automotive electronics Wide operation range: up to 40 V Wide temperature range: – 40 °C ≤ Tj ≤ 150 °C Output protected against short circuit Overtemperature protection Reverse polarity proof Very small SMD-Package SCT 595 SCT 595 Type Ordering Code Package TLE 4250 G Q67006-A9351 SCT-595 (SMD) Functional Description The TLE 4250 G is a monolithic integrated low-drop voltage tracker in the very small SMD package SCT 595. It is designed to supply e.g. sensors under the severe conditions of automotive applications. Therefore the device is equipped with additional protection functions against overload, short circuit and reverse polarity. Supply voltages up to 40 V are tracked to a reference voltage at the adjust input. Therefore the Adjust pin has to be connected to a reference voltage, e.g. to a 5 V supply on a micro-controller port. The output is able to drive a load up to 50 mA while it follows the output of a main voltage regulator within an accuracy of 0.5%. The TLE 4250 G can be switched in stand-by mode via the adjust input which causes the current consumption to drop to very low values. This feature makes the IC suitable for low power battery applications. Data Sheet Rev. 2.2 1 2000-10-04 TLE 4250 G ADJ 1 GND 2 Ι 3 5 GND 4 Q AEP02581 Figure 1 Pin Configuration (top view) Pin Definitions and Functions Pin No. Symbol Function 1 ADJ Adjust/Enable input; connect to the reference voltage via ext. resistor or micro-controller port; high active input 2 GND Ground; internally connected to pin 5 3 I Input voltage 4 Q Output voltage; must be blocked by a capacitor CQ ≥ 1 µF, 2 Ω ≤ ESR ≤ 7 Ω 5 GND Ground Data Sheet Rev. 2.2 2 2000-10-04 TLE 4250 G TLE 4250G Ι 3 4 1 Q ADJ + - 2, 5 AEB02582 Figure 2 Block Diagram Data Sheet Rev. 2.2 3 2000-10-04 TLE 4250 G Absolute Maximum Ratings – 40 °C < Tj < 150 °C Parameter Symbol Limit Values Unit Remarks min. max. VI II – 42 45 V – – – mA internally limited VQ IQ –1 40 V – – – mA internally limited VADJ IADJ – 0.3 40 V – – – µA internally limited Tj Tstg – 40 150 °C – – 50 150 °C – Rthj-pin Rthja – 30 K/W measured to pin 5 – 99 K/W 1) Input Voltage Current Output Voltage Current Adjust Voltage Current Temperatures Junction temperature Storage temperature Thermal Resistances Junction pin Junction ambient 1) Worst case, regarding peak temperature; zero airflow; mounted an a PCB 80 × 80 × 1.5 mm3, heat sink area 300 mm2. Note: Maximum ratings are absolute ratings; exceeding any one of these values may cause irreversible damage to the integrated circuit. Data Sheet Rev. 2.2 4 2000-10-04 TLE 4250 G Operating Range Parameter Input voltage Adjust input voltage Junction temperature Data Sheet Rev. 2.2 Symbol VI VADJ Tj Limit Values Unit Remarks min. max. 4 40 V – 2.5 36 V – – 40 150 °C – 5 2000-10-04 TLE 4250 G Electrical Characteristics VI = 13.5 V; VADJ > 2.5 V; – 40 °C < Tj < 150 °C; unless otherwise specified Parameter Symbol Limit Values min. typ. max. Unit Test Condition Output Output voltage tracking accuracy ∆VQ = VADJ – VQ ∆VQ – 25 – 25 mV 6 V < VI < 28 V 1 mA < IQ < 50 mA Output voltage tracking accuracy ∆VQ – 25 – 25 mV 6 V < VI < 40 V 1 mA < IQ < 10 mA Output voltage tracking accuracy ∆VQ –5 – 5 mV 6 V < VI < 16 V 1 mA < IQ < 10 mA Drop voltage Vdr – 100 300 mV IQ = 10 mA; VADJ > 4 V 1) Output current IQ 50 70 – mA 1) Output capacitor CQ 1 – – µF at 10 kHz; 2 Ω ≤ ESR ≤ 7 Ω Current consumption Iq = II – IQ Iq – 1.5 3.0 mA IQ < 30 mA Current consumption Iq = II – IQ Iq – 80 150 µA IQ < 1 mA Quiescent current (stand-by) Iq = II – IQ Iq – 10 20 µA VADJ = 0 V Tj < 85 °C Current consumption (drop area) Iq – – 3 mA Load regulation ∆VQ – 15 – 15 mV Line regulation ∆VQ – 10 – 10 mV VADJ = VI = 5 V IQ = 0 mA 1 mA < IQ < 30 mA 6 V < VI < 40 V IQ = 10 mA 1) Tj < 125 °C Measured when the output voltage VQ has dropped 100 mV from the nominal value. Data Sheet Rev. 2.2 6 2000-10-04 TLE 4250 G Electrical Characteristics (cont’d) VI = 13.5 V; VADJ > 2.5 V; – 40 °C < Tj < 150 °C; unless otherwise specified Parameter Symbol Power-Supply-RippleRejection Limit Values Unit Test Condition min. typ. max. PSRR – 60 – dB IADJ VADJ – 0.1 0.5 µµA VADJ = 5 V – – 0.8 V VADJ 2.0 – 36 V fr = 100 Hz Vr = 0.5 VPP Adjust/Enable Input Input biasing current Adjust low voltage to disable Adjust range VΙ 6 ... 40 V e.g. TLE 4470 TLE 4270 TLE 4478 VQ VCC VADJ 5V GND 100 nF Tj < 125 °C VQ off VQ – VADJ < 25 mV Tj < 125 °C µC I/O TLE 4250G Ι 3 4 Q CQ 1 µF RQ 2.2 Ω CΙ 100 nF 5V e.g. to sensor + - 1 ADJ 2, 5 AES02583 Figure 3 Application Circuit Data Sheet Rev. 2.2 7 2000-10-04 TLE 4250 G Region of Stability for CQ = 2.2 µF Region of Stability for CQ = 1 µF AED02917 20 ESR Ω ESR Ω 16 16 14 14 12 12 10 10 8 8 6 6 4 4 2 2 0 0 10 20 30 0 40 mA 50 0 10 20 30 40 mA 50 IQ IQ Data Sheet Rev. 2.2 AED02918 20 8 2000-10-04 TLE 4250 G Typical Performance Characteristics Tracking Accuracy ∆VQ versus Temperature Tj Tracking Accuracy ∆VQ versus Output Current IQ AED02740 6 AED02741 15 V Q mV V Q mV 4 10 2 5 125 ˚C 0 0 25 ˚C -2 -5 -4 -10 -6 -40 0 40 80 -15 120 ˚C 160 0 10 20 30 40 mA 50 ΙQ Tj Output Voltage VQ versus Adjust Voltage VADJ, VI > VADJ AED02742 6 VQ Output Voltage VQ versus Input Voltage VI, VADJ = 5 V VQ V V 5 5 4 4 3 3 2 2 1 1 0 0 1 2 3 4 0 V 5 VADJ Data Sheet Rev. 2.2 AED02743 6 0 1 2 3 4 5 V 6 VI 9 2000-10-04 TLE 4250 G Drop Voltage VDR versus Output Current IQ, VADJ = 5 V Current Consumption Iq versus Output Current IQ AED02744 600 V Q mV Ι q mA 500 5 400 4 300 3 200 2 100 1 0 0 10 20 30 AED02746 6 0 40 mA 50 0 10 20 30 40 mA 50 ΙQ ΙQ Output Current IQ versus Input Voltage VI Current Consumption Iq versus Input Voltage VI, VADJ = 5 V AED03012 120 AED02747 6 Ι Q mA Ι q mA 100 5 80 4 T j = 25 ˚C 60 3 40 2 T j = 125 ˚C Ι = 20 mA q 1 20 Ιq = 1 mA 0 0 0 10 20 30 40 V 50 VI Data Sheet Rev. 2.2 0 10 20 30 V 40 VI 10 2000-10-04 TLE 4250 G Package Outlines SCT-595 (Special Package) 2.9 ±0.2 B (2.2) 1.2 +0.1 -0.05 1.1 max (0.3) 0.3 +0.1 -0.05 0.15 +0.1 -0.06 0.6 +0.1 -0.05 0.25 M B 1) Contour of slot depends on profile of gull-wing lead form Sorts of Packing Package outlines for tubes, trays etc. are contained in our Data Book “Package Information”. SMD = Surface Mounted Device Data Sheet Rev. 2.2 A 0.20 M A 0.95 1.9 10˚max 1.6 ±0.1 10˚max 1) +0.2 acc. to DIN 6784 2.6 max 0.25 min 0.1 max (0.23) (0.13) (0.4) 1) 11 Dimensions in mm 2000-10-04 TLE 4250 G Edition 2000-10-04 Published by Infineon Technologies AG, St.-Martin-Strasse 53, D-81541 München © 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. 2.2 12 2000-10-04