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 Green Product (RoHS compliant) AEC Qualified P-TO252-5-11 Functional Description The TLE 4251 is a monolithic integrated low drop voltage tracker in the very small SMD package PG-TO252-5-1. It P-TO263-5-1 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 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. Type Package TLE 4251 D PG-TO252-5-11 TLE 4251 G PG-TO263-5-1 Data Sheet 1 Rev. 2.9, 2007-03-20 TLE 4251 PG-TO263-5-1 PG-TO252-5-11 GND 1 5 I EN ADJ 1 5 Q AEP02810 I EN GND ADJ Q AEP03119 Figure 1 Pin Configuration (top view) Table 1 Pin Definitions and Functions Pin No. Symbol Function 1 I Input voltage 2 EN Enable; high-active input 3 GND Ground 4 ADJ Adjust; connect directly to the reference or with a voltage divider to the reference (for reference-proportional output voltages, VQ<Vref)….. 5 Q Output voltage; must be blocked by a capacitor CQ ≥ 22 μF, ESR ≤ 3 Ω to GND Data Sheet 2 Rev. 2.9, 2007-03-20 TLE 4251 TLE 4251 Saturation Control and Protection Circuit Temperature Control I ADJ EN GND Figure 2 Data Sheet AES02807 Block Diagram 3 Rev. 2.9, 2007-03-20 TLE 4251 Table 2 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 × 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 4 Rev. 2.9, 2007-03-20 TLE 4251 Table 3 Operating Range Parameter Input voltage Adjust input voltage Adjust input voltage Enable input voltage Junction temperature Symbol VI VADJ VADJ VEN Tj Limit Values Unit Remarks Min. Max. 41) 40 V – 2.5 40 V – 0 2.5 V VQ ≤ VADJ + ΔVQ 0 40 V – -40 150 °C – 1) VI > VADJ + VDR Data Sheet 5 Rev. 2.9, 2007-03-20 TLE 4251 Table 4 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 ΔVQ = VADJ - VQ ΔVQ -10 – 10 mV Output voltage tracking accuracy ΔVQ -10 – 10 mV Output voltage tracking accuracy ΔVQ -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 ON1) IQ CQ Iq 400 450 800 mA Tj ≤ 125 °C1) 22 – – μF ESR ≤ 3 Ω at 10 kHz – 10 20 mA IQ = 300 mA Current consumption Iq = II - IQ Iq – 230 300 μA Quiescent current (stand-by) Iq = II - IQ Iq – 0 2 μA IQ < 1 mA; Tj < 85 °C; VEN in ON state VEN = 0 V; Tj < 85 °C Load regulation ΔVQ -35 ±5 35 mV 5 mA < IQ < 300 mA; VI = 6 V; VADJ = 5 V Line regulation ΔVQ -25 ±10 25 mV 12 V < VI < 32 V; IQ = 5 mA Power Supply Ripple Rejection PSRR 60 – – dB fr = 100 Hz; Vr = 0.5 Vpp; VADJ = 5 V; CQ = 22 μF Tantalum IADJ – 0.1 0.5 μA VADJ = 5 V Output current Output capacitor Current consumption Iq = II - IQ Regulator Performance Adjust Input Input biasing current Data Sheet 6 Rev. 2.9, 2007-03-20 TLE 4251 Table 4 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 Symbol Limit Values Unit Test Condition Min. Typ. Max. 2 – – V – – 0.5 V 5 40 70 μA Enable Enable on voltage range Enable off voltage range Input current VEN ON VEN OFF IEN VQ ON VQ ≤ 0.1 V VEN = 5 V 1) Measured when the output voltage VQ has dropped 100 mV from the nominal value. 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 Data Sheet Application Circuit 7 Rev. 2.9, 2007-03-20 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 IQ VENABLE Tracking Accuracy ΔVQ versus Temperature Tj, VADJ = 5 V VQ Current Consumption Iq versus Input Voltage VI, VADJ = 5 V AED02902 6 mV 3.5 V 4 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 -4 -6 -40 0 40 80 150 120 ˚C 160 0 5 10 15 20 25 30 35 V 45 VΙ Tj Data Sheet IQ = 1 mA 200 8 Rev. 2.9, 2007-03-20 TLE 4251 Tracking Accuracy ΔVQ 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 9 Rev. 2.9, 2007-03-20 TLE 4251 Package Outlines 6.5 +0.15 -0.05 A 1) 2.3 +0.05 -0.10 B (5) 0.51 MIN. 0.15 MAX. per side 5 x 0.6 ±0.1 1.14 4.56 0.5 +0.08 -0.04 0.9 +0.20 -0.01 0...0.15 0.8 ±0.15 (4.24) 1 ±0.1 9.98 ±0.5 6.22 -0.2 5.7 MAX. 0.5 +0.08 -0.04 0.1 B 0.25 M A B 1) Includes mold flashes on each side. All metal surfaces tin plated, except area of cut. GPT09527 Figure 4 PG-TO252-5-11 (Plastic Transistor Single Outline) Green Product (RoHS compliant) To meet the world-wide customer requirements for environmentally friendly products and to be compliant with government regulations the device is available as a green product. 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). You can find all of our packages, sorts of packing and others in our Infineon Internet Page “Products”: http://www.infineon.com/products. Dimensions in mm SMD = Surface Mounted Device Data Sheet 10 Rev. 2.9, 2007-03-20 TLE 4251 4.4 10 ±0.2 1.27 ±0.1 A 8.5 1) B 0.05 2.4 0.1 2.7 ±0.3 4.7 ±0.5 7.55 1) 9.25 ±0.2 (15) 1±0.3 0...0.3 0...0.15 5 x 0.8 ±0.1 0.5 ±0.1 4 x 1.7 0.25 M A B 8˚ MAX. 1) Typical Metal surface min. X = 7.25, Y = 6.9 All metal surfaces tin plated, except area of cut. 0.1 B GPT09113 GPT09113 Figure 5 PG-TO263-5-1 (Plastic Transistor Single Outline) Green Product (RoHS compliant) To meet the world-wide customer requirements for environmentally friendly products and to be compliant with government regulations the device is available as a green product. 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). You can find all of our packages, sorts of packing and others in our Infineon Internet Page “Products”: http://www.infineon.com/products. Dimensions in mm SMD = Surface Mounted Device Data Sheet 11 Rev. 2.9, 2007-03-20 TLE 4251 Revision History Revision History Version Date Rev. 2.9 2007-03-20 Initial version of RoHS-compliant derivate of TLE 4251 Page 1: AEC certified statement added Page 1 and Page 10: RoHS compliance statement and Green product feature added Page 1 and Page 10: Package changed to RoHS compliant version Legal Disclaimer updated Data Sheet Changes 12 Rev. 2.9, 2007-03-20 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. 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