TLI4906 INFINEON | Alldatasheet
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Technical content
Rev. 1.0 TLI4906 High Precision Hall Effect Switches for Industrial and Consumer
Applications
TLI4906K, TLI4906L
81726 Munich, Germany
© 2009 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. Infineon Technologies components may be used in life-support devices or systems only 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.
Datasheet 3 Rev. 1.0, 2009-05-04 High Precision Hall Effect Switches for Industrial and Consumer Applications Revision History: 2009-05-04, Rev. 1.0 Previous Revisions: none Page Subjects (major cha nges since last revision)We Listen to Your Comments Any information within this document that you feel is wrong, unclear or missing at all? Your feedback will help us to continuously improve the quality of this document. Please send your proposal (including a reference to this document) to: sensors@infineon.com
Datasheet 4 Rev. 1.0, 2009-05-04 Table of Contents
Datasheet 6 Rev. 1.0, 2009-05-04 List of Tables
Product Name Product Type Ordering Code Package Hall Effect Switch TLI4906K SP000604306 PG-SC59-3-4 Hall Effect Switch TLI4906L SP000604320 PG-SSO-3-2 High Precision Hall Effect Switch TLI4906 Datasheet 7 Rev. 1.0, 2009-05-04
1 Product Description
1.1 Overview
The TLI4906x is a high precision Hall Effect Switch with highly accurate switching thresholds for ambient operating temperatures up to 125°C. The TLI4906K is available in a PG-SC59-3-4 package, the TLI4906L in a PG-SSO-3-2 package.
1.2 Features
- 2.7 V to 18 V supply voltage operation.
- Operation from unregulated power supply.
- High sensitivity and high stability of the magnetic switching points.
- High resistance to mechanical st ress by active error compensation.
- Reverse battery protection (-18 V).
- Superior temper ature stability.
- Low jitter (typically 1 µs).
- High ESD performance ( ± 4 kV HBM).
- Digital output signal (open-drain).
- Not suitable for automotive applications
1.3 Target Applications
The TLI4906x is ideally suited for all industrial and consumer applications that require a high precision switching thresholds for position sensing. It can be used for example for: security systems, alignment control, push buttons, keyboards, key switches, machine tools, etc.
Datasheet 8 Rev. 1.0, 2009-05-04
2 Functional Description
2.1 General
Precise magnetic switching thresholds and high temperature stability are achieved by active compensation circuits and chopper techniques on chip. Offset voltages generat ed by temperature-induced stress or overmolding are canceled so that high accuracy is achieved. The IC has an open collector output stage with 20 mA current sink capability. A wide operating voltage range from 2.7 V to 18V with reverse polarity protection down to -18 V makes the TLI4906xsuitable for a wide range of applications. A magnetic south pole with a field strength above Bop turns the output on. A magnetic north pole exceeding Brp turns it off.
2.2 Pin Configuration
Figure 1 Pin Configuration and sensitive area (Top view, figure not to scale) Center of Sensitive Area ± 0.151.5 ± 0.150.8 321 PG-SSO-3-2SC59 ± 0.11.35 ± 0.12.08
Datasheet 9 Rev. 1.0, 2009-05-04
2.3 Pin Description
2.4 Block Diagram
Figure 2 TLI4906x Block Diagram Table 1 PIN Definitions for the PG-SC59-3-4 package PIN No. Name Function 1V s Supply Voltage
2 Q Output
3 GND Ground
Table 2 PIN Definitions for the PG-SSO-3-2 package PIN No. Name Function s Supply Voltage
2 GND Ground
3 Q Output
Q GNDAmplifier Low Pass Filter Comparator with Hysteresis Voltage Regulator reverse polarity protected Oscillator and Sequencer Bias and Compensation Circuits
Datasheet 10 Rev. 1.0, 2009-05-04
2.5 Operating Modes and States
Field Direction and Definition Positive magnetic fields correspond to the south pole of the magnet targeting the branded side of the package. Figure 3 Definition of the Magnetic Field direction Figure 4 Output Signal
2.6 Functional Block Description
The chopped Hall Effect Switch comprises a Hall probe, a bias generator, compensation circuits, an oscillator and an output transistor. The bias generator provides currents to the Hall probe and the active circuits. Compensation circuits stabilize response of the IC over temperature and reduce the impact of process variations. The Active Error Compensation rejects of fsets in the signal path and reduces the impact of mechanical stress in the package caused by molding, soldering and thermal effects. The chopper technique together with the threshold generator and the comparator ensure high accurate magnetic switching points. Branded Side N S N S Branded Side VQ BopBrp0 B
Datasheet 11 Rev. 1.0, 2009-05-04
3 Specification
3.1 Application circuit
Figure 5 Application circuit It is recommended to use a resistor of 200 Ω in the supply line for current limitation in the case of an overvoltage pulse. Two capacitors of 4.7 nF enhance the EMC performance. The pull-up of 1.2 k Ω limits the current through the output transistor.
3.2 Absolute Maximum Ratings
Stress above the maximum values listed in this section may cause permanent damage to the device. Exposure to absolute maximum rating conditions for extended periods may affect the reliability of the device. Exceeding only one of these values may cause irreversible damage to the device. Table 3 Absolute Maximum Ratings Parameter Symbol Values Unit Note / Test Condition Min. Typ. Max. Maximum Ambient Temperature TA - 40 – 125 °C Maximum Junction Temperature TJ - 40 – 150 °C Supply Voltage VS - 18 – 18 V Supply current through protection device IS -50 – 50 mA Output Voltage VOUT - 0.7 – 18 V Storage Temperature TS - 40 – 150 °C Magnetic flux density B – – unlimited mT ESD Robustness HBM: 1.5 kΩ, 100 pF VESD,HBM 1) According to EIA/JESD22-A114-E ––4 k V VS Q GND TLI4906X 200Ω 1.2kΩ VS GND 4.7nF 4.7nF Q
Datasheet 12 Rev. 1.0, 2009-05-04
3.3 Operating Range
The following operating conditions must not be exceeded in order to ensure correct operation of the TLI4906x. All parameters specified in the following sections refer to these operating conditions unless otherwise mentioned.
3.4 Electrical Characteristics
Product characteristics include the spread of values guaranteed withi n the specified voltage and ambient temperature range. typical characteristics are the median of the production (at Vs=12V and TA=25°C). Table 4 Operating Range Parameter Symbol Values Unit Note / Test Condition Min. Typ. Max. Supply Voltage VS 2.7 – 18 V Output Voltage VQ -0.7 – 18 V Output Current IQ 0–2 0 m A Maximum Ambient Temperature TA -40 – 125 °C Table 5 Electrical Characteristics Parameter Symbol Values Unit Note / Test Condition Min. Typ. Max. Supply Current IS 246 m AV S=2.7 V...18 V Reverse Current ISR 00 . 2 1 m AV S=-18 V Output Saturation Voltage VQSAT –0 . 3 0 . 6 V I Q=20 mA Output leakage current IQLEAK –0 . 0 5 1 0 µ A V Q=18 V Output fall time1) 1) See Figure 6 tf –0 . 0 2 1 µ s R L=1.2k Ω, CL=50 pF Output rise time1) tr –0 . 4 1 µ s Chopper frequency fOSC –3 2 0 – k H z Switching frequency fSW 0–1 5 2) 2) To operate the sensor at maximum switching frequency, t he value of the magnetic signal amplitude must be 1.4 times higher than the static fields. This is due to the -3 dB corner frequency of the low pass filter in the signal path. kHz Delay time3) 3) Systematic delay between magnetic threshold reached and output. td –1 3 – µ s Output jitter4) 4) Jitter is the unpredictable devia tion of the output switching delay. tQJ –1– µ s RMS Typical value for a 1 kHz square wave signal Power-on Time5) 5) Time from applying V S. > 2.7 V to the sensor until the output state is valid. tPON –1 3 – µ s V S > 2.7 V Thermal Resistance junction to ambient6) 6)Relationship between junction and ambient temperature: TJ=Tamb + Rthja . (VS . IS + VQS . IQ). Rthja – 100 – K/W TLI4906K – 190 K/W TLI4906L
Datasheet 13 Rev. 1.0, 2009-05-04 Figure 6 Timing Diagram Table 6 Magnetic Characteristics 1) 1) Over all operating conditions. Parameter Symbol Values Unit Note / Test Condition Min. Typ. Max. Operate point BOP 6.2 10.0 13.9 mT Release point BRP 4.7 8.5 12.3 mT Hysteresis BHYS 0.7 1.5 3.0 mT 2) 2) At 25°C. Temperature compensation of magnetic thresholds TC –- 3 5 0 – p p m / ° C Repeatability of magnetic thresholds3) 3) B REP is equivalent to the noise constant. BREP –2 0 – µ T RMS typical value for ∆Β/∆t > 12mT/ms Applied Magnetic Field 90% 10% VQ tf td tr td BOP BRP
Package Information
Datasheet 14 Rev. 1.0, 2009-05-04
4 Package Information
4.1 TLI4906K Package Outline
Figure 7 Marking of the TLI4906K and distance of the chip to the upper side Figure 8 PG-SC59-3-4 Package Outline AEA03244 Branded Side d: Distance chip to upper side of IC : d d = 0.56 ±0. 1mm Year (y) = 0...9 Month (m) = 1...9, O - October N - November D - December y mI06 3x0.4 +0.05 -0.1 M0.1 0.95 0.95 (0.55) 3±0.1 +0.22.8 -0.1 0.15 MAX. 1.1±0.1 0.2+0.1 +0.1 -0.050.15 0˚...8˚ MAX. GPS09473 0.45 ±0.15 +0.15 -0.31.6 0.1 M 0.1
Datasheet 15 Rev. 1.0, 2009-05-04 Figure 9 Footprint PG-SC59-3-4 (SOT23 compatible)
4.2 TLI4906L Package Outline
Figure 10 Marking of the TLI4906L and distance of the chip to the upper side Reflow Soldering Wave Soldering 0.8 0.8 1.2 0.9 1.3 0.9 0.8 0.8 1.2 1.6 1.4 min1.4 min Year (y) = 0...9 Calendar Week (ww) = 01...52 yww I06 S
Datasheet 16 Rev. 1.0, 2009-05-04 Figure 11 PG-SSO-3-2 Package Outline Total tolerance at 10 pitches ±11) No solder function area ±0.3 ±0.46.35 12.7 12.7±1 ±0.5 -0.5 +0.75 4±0.3 GPO05358 -0.15 ±0.1 Tape Adhesive Tape 0.25 0.39 ±0.5A 23.8±0.5 38 MAX. -11 13 2 1.27±0.25 1.27±0.25 0.6 MAX. 0.4±0.05 1)1 MAX. 0.15 MAX. 1.9 MAX. 4.06±0.08 4.16±0.05 ±0.083.29 3±0.06 0.2 (0.25) x 45˚0.8±0.1 x 45˚±0.10.35 0.2+0.1 (0.79) 1.52±0.05
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