TLE4946-2L
High Precision Hall Effect Latch
About this document
Overview
The TLE4946-2L is a high precision Hall effect latch
with highly accurate switching thresholds for operating
temperatures up to 150°C.
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 stress by active error compensation
Reverse battery protection (VS = -18 V)
Superior temperature stability
Low jitter (typically 1 µs)
High ESD performance (± 4 kV HBM)
Digital output signal
Target applications
The TLE4946-2L is an integrated circuit Hall-effect sensor with low switching thresholds and low hysteresis. It
is specially designed for high sensitivity applications and is ideally suited to detect the rotor position in a BLDC
motor. Also for index counting with small pole wheels and large air gaps the sensor provides a reliable switching
information.
Product name
Product type
Ordering code
Package
Hall Effect Latch
TLE4946-2L
SP000398352
PG-SSO-3-2
Datasheet
www.infineon.com
Please read the Important Notice and Warnings at the end of this document
Rev. 1.1
2020-08
TLE4946-2L
High Precision Hall Effect Latch
Table of contents
Table of contents
About this document . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Table of contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1
1.1
1.2
Functional description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.3
1.4
1.5
1.6
Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Operating modes and states . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Functional block description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2
2.1
2.2
2.3
2.4
Specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Application circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Operating range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3
3.1
Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Package outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Disclaimer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Datasheet
2
Rev. 1.1
2020-08
TLE4946-2L
High Precision Hall Effect Latch
1 Functional description
1
Functional description
1.1
General
Precise magnetic switching thresholds and high temperature stability are achieved by active compensation
circuits and chopper techniques on chip. Offset voltages, generated by temperature induced stress or
overmolding are canceled and high accuracy is achieved. The IC has an open collector output stage with
20 mA current sink capability. A wide operating voltage range form 2.7 V to 18 V with reverse polarity protection
up to -18V makes the device suitable for a wide range of applications. A magnetic south pole with field strength
above Bop turns the output on and a magnetic north pole exceeding Brp turns it off.
1.2
Pin configuration
Center of
Sensitive Area
2.08 ± 0.1
1.35 ± 0.1
1 2 3
PG-SSO-3-2
Figure 1
Pin configuration and sensitive area (Top View, Figure not to Scale)
1.3
Pin description
Table 1
Pin description
Pin or Ball No.
Name
Pin Type
Function
1
Vs
I
Supply voltage
2
GND
O
Ground
3
Q
O
Output
Datasheet
3
Comments
Rev. 1.1
2020-08
TLE4946-2L
High Precision Hall Effect Latch
1 Functional description
1.4
Block diagram
VS
Voltage Regulator
reverse polarity protected
Bias and
Compensation
Circuits
Oscillator
and
Sequencer
Q
Ref
Amplifier
Chopped
Hall Probe
Low
Pass
Filter
GND
Comparator
with
Hysteresis
Figure 2
TLE4946-2L Block diagram
1.5
Operating modes and states
Field Direction Definition: Positive magnetic fields are related with the south pole of the magnet to the branded
side of package.
BOP
Applied
Magnetic
Field
BRP
td
VQ
td
tf
tr
90%
10%
Figure 3
Datasheet
Timing diagram
4
Rev. 1.1
2020-08
TLE4946-2L
High Precision Hall Effect Latch
1 Functional description
VQ
B
Brp
0
Bop
Figure 4
Output signal
1.6
Functional block description
The chopped Hall IC switch comprises a Hall probe, bias generator, compensation circuits, oscillator and
output transistor. The bias generator provides currents for the Hall probe and the active circuits. Compensation
circuits stabilize the temperature behavior and reduce technology variations. The Active Error Compensation
rejects offsets in signal stages and the influence of mechanical stress to the Hall probe caused by molding
and soldering processes and other thermal stresses in the package. This chopper technique together with the
threshold generator and the comparator ensure high accurate magnetic switching points.
Datasheet
5
Rev. 1.1
2020-08
TLE4946-2L
High Precision Hall Effect Latch
2.1
Application circuit
Figure 5
Q
VS
4.7nF
GND
Q
1.2kΩ
Specification
TLE4946-2L
2
4.7nF
2 Specification
GND
200Ω
VS
Application circuit
It is recommended to use a serial resistor of 200 Ω in the supply line for current limitation in the case of a
overvoltage pulse. Two capacitors of 4.7 nF enhance the EMC performance. The pull-up resistor of 1.2 kΩ limits
the current through the output transistor.
2.2
Absolute maximum ratings
Table 2
Absolute maximum ratings
Parameter
Symbol
Values
Min.
Max. junction temperature
Supply voltage
TJ
VDD
Unit
Typ.
Max.
-40
–
150
°C
–
–
155
for 2000 h (not additive)
–
–
165
for 1000 h (not additive)
–
–
175
for 168 h (not additive)
–
–
195
for 3 x 1 h (additive)
-18
–
18
-18
–
24
for 1h, RS ≥ 200 Ω
-18
–
26
for 5min, RS ≥ 200 Ω
V
Supply current through
protection device
IS
-50
–
50
mA
Output voltage
VQ
-0.7
–
18
V
-0.7
–
26
-40
–
150
–
unlimited mT
Storage temperature
TS
Magnetic flux density
B
ESD robustness
HBM: 1.5 kΩ, 100 pF
VESD,HBM
Note/Test Condition
4
for 5min @ 1.2 kΩ pull up
°C
kV
According to EIA/JESD22A114-B
Attention: Stresses above the max. values listed here may cause permanent damage to the device. Exposure
to absolute maximum rating conditions for extended periods may affect device reliability. Maximum
ratings are absolute ratings; exceeding only one of these values may cause irreversible damage to the
integrated circuit.
Datasheet
6
Rev. 1.1
2020-08
TLE4946-2L
High Precision Hall Effect Latch
2 Specification
2.3
Operating range
The following operating conditions must not be exceeded in order to ensure correct operation of the
TLE4946-2L. All parameters specified in the following sections refer to these operating conditions unless
otherwise mentioned.
Table 3
Operating range
Parameter
Symbol
Values
Min.
Unit
Typ.
Max.
Supply voltage
VS
2.7
–
18
V
Output voltage
VQ
-0.7
–
18
V
Junction temperature
Tj
-40
–
150
°C
Output current
IQ
0
–
20
mA
2.4
Note/Test
Condition
Characteristics
Product characteristics involve the spread of values guaranteed within the specified voltage and ambient
temperature range. Typical characteristics are the median of the production (at VS = 12 V and TA = 25°C).
Table 4
Electrical Characteristics
Parameter
Symbol
Values
Min.
Typ.
Unit
Note/Test
Condition
Max.
Supply current
IS
2
4
6
mA
VS = 2.7 V ... 18 V
Reverse current
ISR
0
0.2
1
mA
VS = –18 V
Output saturation voltage
VQSAT
–
0.3
0.6
V
IQ = 20 mA
Output leakage current
IQLEAK
–
0.05
10
µA
for VQ = 18 V
Output fall time
tf
–
0.02
1
µs
Output rise time
tr
–
0.4
1
µs
RL = 1.2 kΩ;
CL = 50 pF
Chopper frequency
fOSC
–
320
–
kHz
Switching frequency
fSW
0
–
15(1)
kHz
Delay time(2)
td
–
13
–
µs
Output jitter (3)
tQJ
–
1
–
µsRMS Typ. value for
square wave
signal 1 kHz
Power-on time (4)
tPON
–
13
–
µs
VS ≥ 2.7 V
Thermal resistance(5)
RthJA
–
190
K/W
PG-SSO-3-2
(1)
(2)
(3)
(4)
(5)
To operate the sensor at the max. switching frequency, the value of the magnetic signal amplitude must be
1.4 times higher than for static fields. This is due to the -3 dB corner frequency of the low pass filter in the
signal path.
Systematic delay between magnetic threshold reached and output switching
Jitter is the unpredictable deviation of the output switching delay
Time from applying VS ≥ 2.7 V to the sensor until the output state is valid
Thermal resistance from junction to ambient
Datasheet
7
Rev. 1.1
2020-08
TLE4946-2L
High Precision Hall Effect Latch
2 Specification
Table 5
Magnetic characteristics
Parameter
Symbol
Values
Min.
Typ.
Unit
Max.
Operate point
BOP
0.5
2.0
3.5
mT
Release point
BRP
-3.5
-2.0
-0.5
mT
Hysteresis
BHYS
1.0
4
6.0
mT
Magnetic Offset(1)
BOFF
-1.5
0
1.5
mT
Temperature compensation
of magn. thresholds
TC
-350
ppm/°C
Repeatability of magnetic
thresholds(2)
BREP
20
µTRMS
(1)
(2)
Note/Test
Condition
Boff = (Bop + Brp) / 2
BREP is equivalent to the noise constant
Datasheet
8
Rev. 1.1
2020-08
TLE4946-2L
High Precision Hall Effect Latch
3 Package information
3
Package information
3.1
Package outline
46 2
yww S
d
optional:
data matrix code
Branded Side
Year (y) = 0...9
Calendar Week (ww) = 01...52
Hall-Probe
d : Distance chip to upper side of IC
PG-SSO-3-2 : 0.57 ±0.08 mm
AEA03644
Figure 6
Datasheet
Marking of TLE4946-2L and Distance of chip to upper side of IC
9
Rev. 1.1
2020-08
TLE4946-2L
High Precision Hall Effect Latch
3 Package information
0.8 ±0.1 x 45°
0.2
2 A
1.52 ±0.05
1 MAX.1)
7°
3 ±0.06
1.9 MAX.
0.35 ±0.1 x 45°
4.06 ±0.08
3.29 ±0.08
4.16 ±0.05
(0.25)
0.15 MAX.
7°
(0.79)
0.6 MAX.
0.2 +0.1
0.4 ±0.05
1.27±0.25
1
2
3
1.27±0.25
18 ±0.5
6 ±0.5
1-1
38 MAX.
9 +0.75
-0.5
23.8 ±0.5
12.7 ±1
A
+
Adhesive
Tape
Tape
6.35 ±0.4
1) No solder function area
Figure 7
Datasheet
4 ±0.3
12.7 ±0.3
Total tolerance at 10 pitches ±1
0.25 -0.15
0.39 ±0.1
GPO05358
Package outline
10
Rev. 1.1
2020-08
TLE4946-2L
High Precision Hall Effect Latch
4 Revision history
4
Revision history
Revision History
Page
Subjects (major changes since last revision)
Revision History: 2020-08, Rev 1.1
Previous Revisions: 1.0
10
Datasheet
Edited figure 6 (optional: data matrix code)
11
Rev. 1.1
2020-08
Trademarks
All referenced product or service names and trademarks are the property of their respective owners.
Edition 2020-08
Published by
Infineon Technologies AG
81726 Munich, Germany
© 2020 Infineon Technologies AG
All Rights Reserved.
Do you have a question about any
aspect of this document?
Email: erratum@infineon.com
Document reference
IFX-enm1597660844002
IMPORTANT NOTICE
The information given in this document shall in no
event be regarded as a guarantee of conditions or
characteristics (“Beschaffenheitsgarantie”) .
With respect to any examples, hints or any typical
values stated herein and/or any information regarding
the application of the product, 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.
In addition, any information given in this document is
subject to customer’s compliance with its obligations
stated in this document and any applicable legal
requirements, norms and standards concerning
customer’s products and any use of the product of
Infineon Technologies in customer’s applications.
The data contained in this document is exclusively
intended for technically trained staff. It is the
responsibility of customer’s technical departments to
evaluate the suitability of the product for the intended
application and the completeness of the product
information given in this document with respect to such
application.
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dangerous substances. For information on the types
in question please contact your nearest Infineon
Technologies office.
Except as otherwise explicitly approved by Infineon
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