TLE4252

Tracking Regulator TLE 4252 Features • • • • • • • • • • • • Output tracking tolerance to reference ≤ ±0.2% Output voltage adjust down to 1.5 V 250 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 to GND and Battery Overtemperature protection Reverse polarity proof Green Product (RoHS compliant) AEC Qualified P-TO252-5-11 Short Functional Description The TLE 4252 is a monolithic integrated low-drop voltage tracking regulator in a very small SMD package PG-TO252-5-11. It is designed to supply off-board systems, e.g. sensors in engine management systems under the severe conditions of automotive applications. Therefore the device is equipped with additional protection functions against reverse polarity and short circuit to GND and battery. With supply voltages up to 40 V the output voltage follows a reference voltage applied at the adjust input with high accuracy. The reference voltage applied directly to the adjust input or by an e.g. external resistor divider can be 1.5 V at minimum. The output is able to drive loads up to 250 mA at minimum while they follow e.g. the 5 V output of a main voltage regulator as reference with high accuracy. The TLE 4252 tracker can be switched into stand-by mode to reduce the current consumption to very low values. This feature makes the IC suitable for low power battery applications. Type TLE 4252 D Data Sheet 1 Package PG-TO252-5-11 Rev. 1.4, 2007-03-20 TLE 4252 Block Diagram Saturation Control and Protection Circuit Temperature Control I Q ADJ GND TLE 4252 D AEB03536.VSD EN Figure 1 Internal Circuit Blocks Data Sheet 2 Rev. 1.4, 2007-03-20 TLE 4252 TLE 4252 (PG -TO252-5 -11 D-Pak) GND 1 2 3 4 5 GND AEP 03534 .VSD Figure 2 Table 1 Pin No. 1 2 3 4 I Pin Configuration (Draft, subject to alternation!) Pin Definitions and Functions (draft, subject to alternation) Symbol Function Supply voltage input; Input for battery or a pre-regulated voltage of a e.g. DC to DC converter. Enable input for tracker; An active high signal turns on the device, with active low the tracker is turned off. Ground; Connected to the heatsink of the package. Adjust input for tracker; Input for the reference voltage which can be connected directly or by voltage divider to the reference (see Application Information). Output voltage of tracker; For a stable operation to avoid ringing at the output connect a capacitor of CQ ≥ 10 μF and 0 ≤ ESR ≤ 5 Ω to GND. EN GND ADJ 5 Q Data Sheet 3 ADJ EN Q I Rev. 1.4, 2007-03-20 TLE 4252 Table 2 Parameter Absolute Maximum Ratings Symbol Limit Values Min. Max. 45 – 45 – 45 – 45 – 150 150 2 V A V A V A V A °C °C kV – Limited internally – Limited internally – Limited internally – Limited internally – – Human Body Model (HBM) Unit Remarks Supply Voltage Input I Voltage Current Enable Input EN Voltage Current Adjust Input ADJ Voltage Current Output Q Voltage Current Temperature Junction temperature Storage temperature ESD-Protection Voltage VI II VEN IEN VADJ IADJ VQ IQ Tj Tstg VESD -42 – -42 – -42 – -2 – -40 -50 -2 Note: Maximum ratings are absolute ratings, exceeding one of these values may cause irreversible damage to the integrated circuit! Data Sheet 4 Rev. 1.4, 2007-03-20 TLE 4252 Table 3 Parameter Operating Range Symbol Limit Values Min. Typ. – – – – – Max. 40 40 40 1.5 V V V V V Unit Remarks In- and Output Voltage VI Enable input voltage VEN Adjust input voltage VADJ Adjust input voltage VADJ Error amplifier CMR Supply voltage common mode range Temperature Junction temperature Tj Junction to ambient Junction to ambient Junction to ambient Junction to case 3.5 0 1.5 0 1.5 VI > VADJ + Vdr – – VI 0.5 VQ ≤ VADJ + ΔVQ VQ ≤ VADJ + ΔVQ with VFB = VQ – Footprint only1) Heat sink area 300 mm2 1) Heat sink area 600 mm2 1) – -40 – – – – – – – – – 150 144 78 55 2 °C K/W K/W K/W K/W Thermal Resistance PG-TO252-5-11 Rthj-a Rthj-a Rthj-a Rthj-c 1) Worst case regarding peak temperature; zero airflow; mounted on FR4; 80 × 80 × 1.5 mm3; 35 μ Cu; 5 μ Sn Note: Within this operating range the IC is functional. The electrical characteristics, however, are not guaranteed over this full range given above. Data Sheet 5 Rev. 1.4, 2007-03-20 TLE 4252 Table 4 Electrical Characteristics VI = 13.5 V; 1.5 V ≤ VADJ ≤ VI - 0.6 V; -40 °C < Tj < 150 °C; unless otherwise specified Parameter Symbol Limit Values Min. Output voltage tracking accuracy ΔVQ = VADJ - VQ Output voltage tracking accuracy ΔVQ = VADJ - VQ Drop voltage ΔVQ -10 Typ. – Max. 10 mV 4.5 V < VI < 26 V; 1 mA < IQ < 200 mA; 3.5 V < VI < 32 V; 10 mA < IQ < 100 mA; 3.5 V < VI < 4.5 V; 1 mA < IQ < 200 mA; Unit Test Condition Regulator Performance, Tracker Output Q ΔVQ -10 -25 – – 280 10 25 600 mV mV mV Vdr – Output current Output capacitor Current consumption Iq = II - IQ Current consumption Iq = II - IQ Quiescent current (stand-by) Iq = II - IQ Reverse current Load regulation Line regulation Power supply ripple rejection IQ CQ Iq Iq Iq 250 10 – – – 350 – 10 100 0 500 – 25 150 2 mA μF mA μA μA IQ = 200 mA; VADJ > 3.5 V; VEN = VEN, on1) VQ = 5.0 V2) 0 ≤ ESR ≤ 5 Ω at 10 kHz Ir ΔVQ ΔVQ – – – – 0.5 – – 60 5 10 10 – mA mV mV dB PSSR IQ = 200 mA; VQ = 5 V IQ < 100 μA; Tj < 85 °C; VEN = 5 V VEN = 0 V; VEN/ADJ = 0 V; T j < 85 ° C VQ = 16 V; VI = 0 V 1 mA < IQ < 200 mA 5 V < VI < 32 V; IQ = 5 mA fI, ripple = 100 Hz; VI, ripple = 0.5 Vpp3) Data Sheet 6 Rev. 1.4, 2007-03-20 TLE 4252 Table 4 Electrical Characteristics (cont’d) VI = 13.5 V; 1.5 V ≤ VADJ ≤ VI - 0.6 V; -40 °C < Tj < 150 °C; unless otherwise specified Parameter Adjust Input ADJ Input biasing current Enable Input EN Device on voltage range Device off voltage range Input current Symbol Limit Values Min. Typ. 0.1 – – 2 1.5 Max. 0.5 40 0.8 5 – μA V V μA MΩ Unit Test Condition IADJ VEN, on VEN, off – 2.0 0 -1 – VADJ = 5 V VQ settled VQ < 0.1 V VEN = 5 V – IEN EN pull-down resistor REN 1) Measured when the output voltage VQ has dropped 100 mV from the nominal value. 2) The current limit depends also on the input voltage, see graph output current vs. input voltage in the diagrams section. 3) Specified by design. Not subject to production test. Data Sheet 7 Rev. 1.4, 2007-03-20 TLE 4252 Application Information VBAT I M µC S ain upply e.g. TLE 4271-2 TLE 4278 TLE 4470 etc. GD N Q VDD R1ADJ µC e.g. C 167 R2ADJ I/O 4 E N AJ D TLE 4252 D Q 5 VQ< VREF 1 I GD N AA E 03535.V D S Figure 3 Application Circuit: Output Voltage < Reference Voltage Figure 3 shows a typical application circuit with VQ < VREF. Of course, also VQ = VREF is feasible by directly connecting the reference pin of the TLE 4252 D to the appropriate voltage level without voltage divider. The output voltage calculates to: R 2ADJ V Q = V REF × ⎛ ----------------------------------- ⎞ ⎝ R 1ADJ + R 2ADJ⎠ (1) Data Sheet 8 Rev. 1.4, 2007-03-20 TLE 4252 Diagrams Output Current Limit IQ versus Input Voltage VI I Q 1 ,2 500 mA 400 A E D 0 3 5 3 7 .V S D Drop Voltage VDR versus Output Current IQ Vdr [mV] TL E4 2 5 2 _ VDR-IQ .VSD T j = 2 5°C 1000 300 100 200 Tj = 25 °C 10 100 0 0 10 20 30 40 V 50 0.2 1 10 100 I Q [mA] V I1 ,2 Current Consumption Iq versus Output Current IQ TL E4 2 5 2 _ IQ -IQ .VSD Drop Voltage VDR versus Junction Temperature TJ 600 Vdr [mV] TL E4 2 5 2 _ VDR-TJ .VSD I q [mA] V I = 13.5 V V A DJ = 5 V T j = 25 °C 10 400 I Q = 200 mA 1 300 I Q = 100 mA 200 0.1 100 0.2 1 10 100 I Q [mA] -40 -20 0 20 40 60 80 100 120 140 T j [°C] Data Sheet 9 Rev. 1.4, 2007-03-20 TLE 4252 Package Outlines 6.5 +0.15 -0.05 5.7 MAX. 1) A B 2.3 +0.05 -0.10 0.5 +0.08 -0.04 (4.24) 1 ±0.1 (5) 9.98 ±0.5 6.22 -0.2 0.8 ±0.15 0.9 +0.20 -0.01 0...0.15 0.15 MAX. per side 0.51 MIN. 5 x 0.6 ±0.1 1.14 0.5 +0.08 -0.04 0.1 B 4.56 0.25 M AB 1) Includes mold flashes on each side. All metal surfaces tin plated, except area of cut. 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. 1.4, 2007-03-20 TLE 4252 5.8 10.6 6.4 0.8 5.36 Figure 5 Foot Print for PG-TO-252-5-11 (Plastic Transistor Single Outline) Data Sheet 11 2.2 Rev. 1.4, 2007-03-20 TLE 4252 Revision History Revision History Version Rev. 1.4 Date Changes 2007-03-20 Initial version of RoHS-compliant derivate of TLE 4252 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. 1.4, 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. With respect to any examples or hints given herein, any typical values stated herein and/or any information regarding the application of the device, Infineon Technologies hereby disclaims any and all warranties and liabilities of any kind, including without limitation, warranties of non-infringement of intellectual property rights of any third party. Information For further information on technology, delivery terms and conditions and prices, please contact the nearest Infineon Technologies Office (www.infineon.com). Warnings Due to technical requirements, components may contain dangerous substances. For information on the types in question, please contact the nearest Infineon Technologies Office. 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