Low Drop Voltage Tracker TLE 4251 Features • • • • • • • • • Output tracking tolerance ≤ ± 0.2% 400 mA output current capability Enable Function Very low current consumption in OFF mode 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 Type Ordering Code Package TLE 4251 D Q67006-A9439 P-TO252-5-1 TLE 4251 G Q67006-A9529 P-TO263-5-1 P-TO252-5-1 P-TO263-5-1 Functional Description The TLE 4251 is a monolithic integrated low-drop voltage tracker in the very small SMD package P-TO252-5-1. 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 over load, short circuit and reverse polarity. Supply voltages up to 40 V are tracked to a reference voltage given to the adjust input via an external resistor. The output is able to drive loads up to 400 mA while it follows e.g. the 5 V output of a main voltage regulator within an accuracy of 0.5%. For loads up to 300 mA the tracking accuracy is 0.2%. The TLE 4251 can be switched in stand-by mode via the enable EN 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. 2.4 1 2001-05-07 TLE 4251 P-TO252-5-1 P-TO263-5-1 GND 1 5 1 I EN ADJ 5 Q AEP02810 I EN GND ADJ Q AEP03119 Figure 1 Pin Configuration (top view) Pin No. Symbol Function 1 I Input voltage 2 EN Enable, high-active input 3 GND Ground 4 ADJ Adjust; connect to the reference voltage via ext. resistor or micro-controller port 5 Q Output voltage; must be blocked by a capacitor CQ ≥ 22 µF, ESR ≤ 3 Ω to GND Data Sheet Rev. 2.4 2 2001-05-07 TLE 4251 TLE 4251 Saturation Control and Protection Circuit Temperature Control I ADJ EN GND Figure 2 AES02807 Block Diagram Data Sheet Rev. 2.4 3 2001-05-07 TLE 4251 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 –2 45 V – – – mA internally limited VADJ IADJ – 42 45 V – – – µA internally limited VEN IEN – 42 45 V – – – µA internally limited Tj Tstg – 40 150 °C – – 50 150 °C – Rthjc Rthja Rthjc Rthja – 4 K/W TLE 4251 D – 78 K/W TLE 4251 D1) – 3 K/W TLE 4251 G – 52 K/W TLE 4251 G1) Input Voltage Current Output Voltage Current Adjust Voltage Current Enable Voltage Current Temperatures Junction temperature Storage temperature Thermal Resistances Junction case Junction ambient Junction case Junction ambient 1) Worst case, regarding peak temperature; zero airflow; mounted an a PCB 80 300 mm2 . × 80 × 1.5 mm3, heat sink area Note: Maximum ratings are absolute ratings; exceeding any one of these values may cause irreversible damage to the integrated circuit. Data Sheet Rev. 2.4 4 2001-05-07 TLE 4251 Operating Range Parameter Symbol Limit Values min. VI VADJ VADJ VEN Tj Input voltage Adjust input voltage Adjust input voltage Enable input voltage Junction temperature 1) Unit Remarks max. 1) 40 V – 2.5 40 V – 0 2.5 V VQ ≤ VADJ + ∆VQ 0 40 V – – 40 150 °C – 4 VI > VADJ + VDR Electrical Characteristics VI = 13.5 V; 2.5 V ≤ VADJ ≤ VI – 0.5 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 – 10 – 10 mV Output voltage tracking accuracy ∆VQ – 10 – 10 mV Output voltage tracking accuracy ∆VQ – 25 – 25 mV Drop voltage Vdr – 280 520 mV VI < 13.5 V; – 40 °C< Tj < 125 °C; 1 mA < IQ < 300 mA 6 V < VI < 40 V 5 mA < IQ < 200 mA 6 V < VI < 28 V 1 mA < IQ < 300 mA IQ = 300 mA; VADJ > 4 V; Enable ON;1) Output current IQ 400 450 800 mA Tj ≤ 125 °C1) Output capacitor CQ 22 – – µF ESR ≤ 3 Ω at 10 kHz Current consumption Iq = II – IQ Iq – 10 20 mA IQ = 300 mA Current consumption Iq = II – IQ Iq – 230 300 µA IQ < 1 mA Tj < 85 °C VEN in ON state Data Sheet Rev. 2.4 5 2001-05-07 TLE 4251 Electrical Characteristics (cont’d) VI = 13.5 V; 2.5 V ≤ VADJ ≤ VI – 0.5 V; – 40 °C < Tj < 150 °C; unless otherwise specified Parameter Quiescent current (stand-by) Iq = II – IQ Symbol Limit Values Unit Test Condition min. typ. max. Iq – 0 10 µA VEN = 0 V Tj < 85 °C ∆VQ – 35 ±5 35 mV 5 mA < IQ < 300 mA; Regulator Performance Load regulation VI = 6 V, VADJ = 5 V Line regulation Power-Supply-RippleRejection ∆VQ ± 10 – 25 25 mV 12 V < VI < 32 V PSRR 60 – – dB IQ = 5 mA fr = 100 Hz; Vr = 5 VPP IADJ – 0.1 0.5 µA VADJ = 5 V VEN ON VEN OFF IEN 2 – – V – – 0.5 V 5 40 70 µA VQ ON VQ ≤ 0.1 V VEN = 5 V Adjust Input Input biasing current Enable Enable on voltage range Enable off voltage range Input current 1) Measured when the output voltage VQ has dropped 100 mV from the nominal value. Data Sheet Rev. 2.4 6 2001-05-07 TLE 4251 Application Information 6...40 V µC e.g. TLE 4470 TLE 4269 TLE 4278 I Q VCC GND 100 nF 22 µF I/O TLE 4251 Saturation Control and Protection Circuit Temperature Control I LOAD to sensor Q 22 µF 100 nF ADJ C 100 nF EN GND AES02808 Figure 3 Application Circuit Data Sheet Rev. 2.4 7 2001-05-07 TLE 4251 Quiescent Current Iq versus Output Current IQ Enable Current IEN versus Enable Voltage VEN AED02900 30 Iq mA IENABLE 25 25 20 20 15 15 10 10 5 5 0 AED02901 30 µA 0 100 200 300 0 mA 450 0 0.5 1 1.5 2 2.5 3 3.5 V 4 IQ VENABLE Tracking Accuracy ∆VQ versus Temperature Tj, VADJ = 5 V VQ Current Consumption Iq versus Input Voltage VI, VADJ = 5 V AED02902 6 mV AED02904 400 Iq µA 4 350 VI = 6 V IQ = 300 mA 2 300 0 IQ = 10 mA 250 -2 VI = 40 V IQ = 200 mA IQ = 1 mA 200 -4 -6 -40 0 40 80 150 120 ˚C 160 5 10 15 20 25 30 35 V 45 VΙ Tj Data Sheet Rev. 2.4 0 8 2001-05-07 TLE 4251 Tracking Accuracy ∆VQ versus Output Current IQ VQ AED02903 3 mV 2.5 VADJ = 5 V 2 VADJ = 3 V 1.5 1 0.5 0 0 100 200 300 400 mA 500 IQ Data Sheet Rev. 2.4 9 2001-05-07 TLE 4251 Package Outlines P-TO252-5-1 (Plastic Transistor Single Outline) 2.3 +0.05 -0.10 A 1 ±0.1 0...0.15 0.5 +0.08 -0.04 5x0.6 ±0.1 1.14 4.56 0.9 +0.08 -0.04 0.51 min 0.15 max per side B 5.4 ±0.1 0.8 ±0.15 (4.17) 9.9 ±0.5 6.22 -0.2 1 ±0.1 6.5 +0.15 -0.10 0.1 0.25 M A B GPT09161 All metal surfaces tin plated, except area of cut. Data Sheet Rev. 2.4 10 2001-05-07 TLE 4251 P-TO263-5-1 (Plastic Transistor Single Outline) 10 ±0.2 4.4 9.8 ±0.15 1.27 ±0.1 B 0.1 0.05 2.7 ±0.3 8 1) 2.4 4.7 ±0.5 (15) 9.25 ±0.2 1±0.3 A 8.5 1) 0...0.15 5x0.8 ±0.1 0.5 ±0.1 4x1.7 8˚ max. 1) M A B Typical All metal surfaces tin plated, except area of cut. Sorts of Packing Package outlines for tubes, trays etc. are contained in our Data Book “Package Information”. SMD = Surface Mounted Device Data Sheet Rev. 2.4 11 0.1 GPT09113 0.25 Dimensions in mm 2001-05-07 TLE 4251 Edition 2001-05-07 Published by Infineon Technologies AG, St.-Martin-Strasse 53, D-81541 München © Infineon Technologies AG 2001. 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. 2.4 12 2001-05-07