TLE4251

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 TLE 4251 D TLE 4251 G Data Sheet 1 Package PG-TO252-5-11 PG-TO263-5-1 Rev. 2.9, 2007-03-20 TLE 4251 PG-TO263-5-1 PG-TO252-5-11 GND 1 5 1 5 I EN ADJ Q AEP02810 I EN GND ADJ Q AEP03119 Figure 1 Table 1 Pin No. 1 2 3 4 I Pin Configuration (top view) Pin Definitions and Functions Symbol EN GND ADJ Function Input voltage Enable; high-active input Ground Adjust; connect directly to the reference or with a voltage divider to the reference (for reference-proportional output voltages, VQ VADJ + VDR VI VADJ VADJ VEN Tj VQ ≤ VADJ + ΔVQ – – 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 Output Output voltage tracking accuracy ΔVQ = VADJ - VQ Output voltage tracking accuracy Output voltage tracking accuracy Drop voltage ΔVQ -10 – 10 mV Symbol Limit Values Min. Typ. Max. Unit Test Condition ΔVQ ΔVQ -10 -25 – – – 280 10 25 520 mV mV mV Vdr 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) Output current Output capacitor Current consumption Iq = II - IQ Current consumption Iq = II - IQ Quiescent current (stand-by) Iq = II - IQ Regulator Performance Load regulation Line regulation Power Supply Ripple Rejection IQ CQ Iq Iq Iq 400 22 – – – 450 – 10 230 0 800 – 20 300 2 mA μF mA μA μA Tj ≤ 125 °C1) ESR ≤ 3 Ω at 10 kHz IQ = 300 mA IQ < 1 mA; Tj < 85 °C; VEN in ON state VEN = 0 V; Tj < 85 °C ΔVQ ΔVQ -35 -25 60 ±5 ±10 – 35 25 – mV mV dB 5 mA < IQ < 300 mA; VI = 6 V; VADJ = 5 V 12 V < VI < 32 V; IQ = 5 mA PSRR fr = 100 Hz; Vr = 0.5 Vpp; VADJ = 5 V; CQ = 22 μF Tantalum VADJ = 5 V Adjust Input Input biasing current IADJ – 0.1 0.5 μA 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 Enable Enable on voltage range Enable off voltage range Input current Symbol Limit Values Min. Typ. – – 40 Max. – 0.5 70 V V μA Unit Test Condition VEN ON VEN OFF IEN 2 – 5 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 I 100 nF TLE 4251 e.g. TLE 4470 TLE 4269 TLE 4278 GND µC Q 22 µF VCC I/O Saturation Control and Protection Circuit Temperature Control I Q LOAD to sensor 22 µF 100 nF ADJ C 100 nF GND EN AES02808 Figure 3 Application Circuit Data Sheet 7 Rev. 2.9, 2007-03-20 TLE 4251 Quiescent Current Iq versus Output Current IQ 30 AED02900 Enable Current IEN versus Enable Voltage VEN 30 µA 25 AED02901 Iq mA 25 IENABLE 20 20 15 15 10 10 5 5 0 0 100 200 300 mA 450 0 0 0.5 1 1.5 2 2.5 3 3.5 V 4 IQ VENABLE Tracking Accuracy ΔVQ versus Temperature Tj, VADJ = 5 V 6 mV 4 AED02902 Current Consumption Iq versus Input Voltage VI, VADJ = 5 V 400 AED02904 VQ Iq µA VI = 6 V IQ = 300 mA 350 2 300 0 IQ = 10 mA 250 -2 VI = 40 V IQ = 200 mA -4 200 IQ = 1 mA -6 -40 0 40 80 120 ˚C 160 150 0 5 10 15 20 25 30 35 V 45 Tj VΙ Data Sheet 8 Rev. 2.9, 2007-03-20 TLE 4251 Tracking Accuracy ΔVQ versus Output Current IQ 3 mV 2.5 AED02903 VQ 2 VADJ = 5 V 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 5.7 MAX. (4.24) 1 ±0.1 1) A B 0.8 ±0.15 2.3 +0.05 -0.10 0.5 +0.08 -0.04 (5) 9.98 ±0.5 6.22 -0.2 0.9 +0.20 -0.01 0...0.15 0.51 MIN. 0.15 MAX. per side 5 x 0.6 ±0.1 1.14 0.5 +0.08 -0.04 0.1 B 4.56 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. SMD = Surface Mounted Device Data Sheet 10 Dimensions in mm Rev. 2.9, 2007-03-20 TLE 4251 4.4 10 ±0.2 0...0.3 8.5 1) A 1.27 ±0.1 B 0.05 1±0.3 (15) 9.25 ±0.2 7.55 1) 2.4 0.1 0...0.15 5 x 0.8 ±0.1 4 x 1.7 0.25 M 4.7 ±0.5 2.7 ±0.3 0.5 ±0.1 AB 8˚ MAX. 0.1 B 1) Typical Metal surface min. X = 7.25, Y = 6.9 All metal surfaces tin plated, except area of cut. 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. SMD = Surface Mounted Device Data Sheet 11 Dimensions in mm Rev. 2.9, 2007-03-20 TLE 4251 Revision History Revision History Version Rev. 2.9 Date Changes 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 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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