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 Package TLE 4252 D PG-TO252-5-11 Data Sheet 1 Rev. 1.4, 2007-03-20 TLE 4252 Block Diagram Saturation Control and Protection Circuit Temperature Control I Q ADJ GND EN TLE 4252 D AEB03536.VSD Figure 1 Data Sheet Internal Circuit Blocks 2 Rev. 1.4, 2007-03-20 TLE 4252 TLE 4252 (PG -TO252-5 -11 D-Pak) 3 EN GND 4 5 Q 2 ADJ 1 I GND AEP 03534.VSD Figure 2 Pin Configuration (Draft, subject to alternation!) Table 1 Pin Definitions and Functions (draft, subject to alternation) Pin No. Symbol Function 1 I Supply voltage input; Input for battery or a pre-regulated voltage of a e.g. DC to DC converter. 2 EN Enable input for tracker; An active high signal turns on the device, with active low the tracker is turned off. 3 GND Ground; Connected to the heatsink of the package. 4 ADJ Adjust input for tracker; Input for the reference voltage which can be connected directly or by voltage divider to the reference (see Application Information). 5 Q 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. Data Sheet 3 Rev. 1.4, 2007-03-20 TLE 4252 Table 2 Absolute Maximum Ratings Parameter Symbol Limit Values Unit Remarks Min. Max. VI II -42 45 V – – – A Limited internally VEN IEN -42 45 V – – – A Limited internally VADJ IADJ -42 45 V – – – A Limited internally VQ IQ -2 45 V – – – A Limited internally Tj Tstg -40 150 °C – -50 150 °C – VESD -2 2 kV Human Body Model (HBM) 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 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 Operating Range Parameter Symbol Limit Values Unit Remarks Min. Typ. Max. 3.5 – 40 V VI > VADJ + Vdr 0 – 40 V – 1.5 – 40 V – 0 – 1.5 V 1.5 – VI - V VQ ≤ VADJ + ΔVQ VQ ≤ VADJ + ΔVQ with VFB = VQ 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 0.5 Temperature Junction temperature Tj -40 – 150 °C – Thermal Resistance PG-TO252-5-11 – – 144 K/W Footprint only1) Junction to ambient Rthj-a Rthj-a – – 78 K/W Heat sink area 300 mm2 1) Junction to ambient Rthj-a – – 55 K/W Heat sink area 600 mm2 1) Junction to case Rthj-c – – 2 K/W – Junction to ambient 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. Typ. Unit Test Condition Max. Regulator Performance, Tracker Output Q Output voltage tracking accuracy ΔVQ = VADJ - VQ ΔVQ -10 – 10 mV 4.5 V < VI < 26 V; 1 mA < IQ < 200 mA; Output voltage tracking accuracy ΔVQ = VADJ - VQ ΔVQ -10 – 10 mV 3.5 V < VI < 32 V; 10 mA < IQ < 100 mA; -25 – 25 mV 3.5 V < VI < 4.5 V; 1 mA < IQ < 200 mA; Drop voltage Vdr – 280 600 mV Output current IQ CQ 250 350 500 mA IQ = 200 mA; VADJ > 3.5 V; VEN = VEN, on1) VQ = 5.0 V2) 10 – – μF 0 ≤ ESR ≤ 5 Ω at 10 kHz Current consumption Iq = II - IQ Iq – 10 25 mA Current consumption Iq = II - IQ Iq – 100 150 μA Quiescent current (stand-by) Iq = II - IQ Iq – 0 2 μA Reverse current Ir – 0.5 5 mA Load regulation ΔVQ – – 10 mV Line regulation ΔVQ – – 10 mV Power supply ripple rejection PSSR – 60 – dB IQ = 200 mA; VQ = 5 V IQ < 100 μA; Tj < 85 °C; VEN = 5 V VEN = 0 V; VEN/ADJ = 0 V; Tj < 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) Output capacitor 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 Symbol Limit Values Unit Test Condition Min. Typ. Max. IADJ – 0.1 0.5 μA VADJ = 5 V Device on voltage range VEN, on 2.0 – 40 V VQ settled Device off voltage range VEN, off 0 – 0.8 V VQ < 0.1 V -1 2 5 μA VEN = 5 V – 1.5 – MΩ – Adjust Input ADJ Input biasing current Enable Input EN IEN EN pull-down resistor REN Input current 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 Main µC Supply e.g. TLE 4271-2 TLE 4278 TLE 4470 etc. VDD Q µC R1ADJ e.g. C167 R2ADJ GND 4 I/O EN ADJ Q 5 VQ< VREF TLE 4252 D 1 I GND AEA03535.VSD 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⎠ Data Sheet (1) 8 Rev. 1.4, 2007-03-20 TLE 4252 Diagrams Output Current Limit IQ versus Input Voltage VI I Q 1 ,2 Drop Voltage VDR versus Output Current IQ A E D 0 3 5 3 7 .V S D 500 m A 400 TL E4 2 5 2 _ VDR-IQ .VSD Vdr [mV] 1000 T j = 2 5°C 300 100 Tj = 25 °C 200 10 100 0 0 10 20 30 40 V V 50 0.2 1 10 100 I Q [mA] I1 ,2 Drop Voltage VDR versus Junction Temperature TJ Current Consumption Iq versus Output Current IQ TL E4 2 5 2 _ VDR-TJ .VSD 600 TL E4 2 5 2 _ IQ -IQ .VSD I q [mA] V I = 13.5 V V A DJ = 5 V T j = 25 °C 10 Vdr [mV] 400 I Q = 200 mA 300 1 200 I Q = 100 mA 0.1 100 0.2 1 10 -40 -20 0 100 T j [°C] I Q [mA] Data Sheet 20 40 60 80 100 120 140 9 Rev. 1.4, 2007-03-20 TLE 4252 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 0.5 +0.08 -0.04 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. 0.1 B 0.25 M A B 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. Dimensions in mm SMD = Surface Mounted Device Data Sheet 10 Rev. 1.4, 2007-03-20 TLE 4252 2.2 10.6 6.4 5.8 0.8 5.36 Figure 5 Data Sheet Foot Print for PG-TO-252-5-11 (Plastic Transistor Single Outline) 11 Rev. 1.4, 2007-03-20 TLE 4252 Revision History Revision History Version Date Rev. 1.4 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 Changes 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. 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