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www.sii-ic.com FOR AUTOMOTIVE 125°C OPERATION HIGH-WITHSTAND VOLTAGE HIGH-SPEED UNIPOLAR DETECTION TYPE HALL IC © Seiko Instruments Inc., 2013-2015 Rev.1.6_00 Seiko Instruments Inc. 1 The S-57A1 A Series, developed by CMOS technology, is a high- accuracy Hall IC that operat es with high temperature and high-withstand voltage. The output voltage changes when the S-57A1 A Series detects the intensity level of magnetic flux density. Using the S-57A1 A Series with a magnet makes it possible to detect the open / close and rotation status in various devices. The S-57A1 A Series includes a reverse voltage protection circuit and an output current limit circuit. High-density mounting is possible by using the small SOT-23-3 package. Due to its high-accuracy magnetic charac teristics, the S-57A1 A Series can make operation's dispersion in the system combined with magnet smaller. Caution This product can be used in vehicle equipment and in-vehicle equipment. Before using the product in the purpose, contact to SII is indispensable.  Features

  • Pole detection*1: Detection of S pole, detection of N pole
  • Detection logic for magnetism*1: Active "L", active "H"
  • Output form*1: Nch open-drain output, Nch driver + built-in pull-up resistor
  • Magnetic sensitivity*1: B OP = 3.0 mT typ., BOP = 6.0 mT typ.
  • Operating cycle: t CYCLE = 16.0 μs typ.
  • Power supply voltage range: V DD = 3.5 V to 26.0 V
  • Built-in regulator
  • Built-in reverse voltage protection circuit
  • Built-in output current limit circuit
  • Operation temperature range: Ta = −40°C to +125°C
  • Lead-free (Sn 100%), halogen-free
  • AEC-Q100 in process*2 *1. The option can be selected. *2. Contact our sales office for details.  Applications
  • Automobile equipment
  • Home appliance
  • DC brushless motor
  • Housing equipment
  • Industrial equipment  Package
  • SOT-23-3

FOR AUTOMOTIVE 125°C OPERATION HIGH-WITHSTAND VOLTAGE HIGH-SPEED UNIPOLAR DETECTION TYPE HALL IC Rev.1.6_00 S-57A1 A Series Seiko Instruments Inc. 3  AEC-Q100 in Process Contact our sales office for details of AEC-Q100 reliability specification.  Product Name Structure 1. Product name S-57A1 x x x x A - M3T2 U Environmental code U: Lead-free (Sn 100%), halogen-free Package name (abbreviation) and packing specifications M3T2: SOT-23-3, Tape Operation temperature A: Ta = −40°C to +125°C Magnetic sensitivity 1: B OP = 3.0 mT typ. 2: B OP = 6.0 mT typ. Detection logic for magnetism L: Active "L" H: Active "H" Pole detection S: Detection of S pole N: Detection of N pole Output form N: Nch open-drain output R: Nch driver + built-in pull-up resisto r *1. Refer to the tape drawing. 2. Package Table 1 Package Drawing Codes Package Name Dimension Tape Reel SOT-23-3 MP003-C-P-SD MP003-C-C-SD MP003-Z-R-SD 3. Product name list Table 2 Product Name Output Form Pole Detection Detection Logic for Magnetism Magnetic Sensitivity (BOP) S-57A1NSL1A-M3T2U Nch open-drain output S pole Active "L" 3.0 mT typ. S-57A1NSL2A-M3T2U Nch open-drain output S pole Active "L" 6.0 mT typ. S-57A1NSH1A-M3T2U Nch open-drain output S pole Active "H" 3.0 mT typ. S-57A1NSH2A-M3T2U Nch open-drain output S pole Active "H" 6.0 mT typ. S-57A1NNL2A-M3T2U Nch open-drain output N pole Active "L" 6.0 mT typ. S-57A1RSL1A-M3T2U Nch driver + built-in pull-up resistor S pole Active "L" 3.0 mT typ. Remark Please contact our sales office for products other than the above.

FOR AUTOMOTIVE 125°C OPERATION HIGH-WITHSTAND VOLTAGE HIGH-SPEED UNIPOLAR DETECTION TYPE HALL IC S-57A1 A Series Rev.1.6_00 Seiko Instruments Inc. 4  Pin Configuration 1. SOT-23-3 Top view Figure 3 Table 3 Pin No. Symbol Description

1 VSS GND pin

2 VDD Power supply pin

3 OUT Output pin

 Absolute Maximum Ratings Table 4 (Ta = +25°C unless otherwise specified) Item Symbol Absolute Maximum Rating Unit Power supply voltage V DD V SS − 28.0 to VSS + 28.0 V Output current I OUT 20 mA Output voltage Nch open-drain output product VOUT VSS − 0.3 to VSS + 28.0 V Nch driver + built-in pull-up resistor product V SS − 0.3 to VDD + 0.3 V Power dissipation P D 650 *1 mW Junction temperature T j −40 to +150 °C Operation ambient temperature T opr −40 to +125 °C Storage temperature T stg −40 to +150 °C *1. When mounted on board [Mounted board] (1) Board size: 114.3 mm × 76.2 mm × t1.6 mm (2) Board name: JEDEC STANDARD51-7 Caution The absolute maximum ra tings are rated values exceeding whic h the product could suffer physical damage. These values must therefore not be exceeded under any conditions. 600 400 200 0 50 100 150 500 300 100 700 Power dissipation (P D) [mW] Ambient temperature (Ta) [ °C] Figure 4 Power Dissipation of Package (When Mounted on Board)

FOR AUTOMOTIVE 125°C OPERATION HIGH-WITHSTAND VOLTAGE HIGH-SPEED UNIPOLAR DETECTION TYPE HALL IC Rev.1.6_00 S-57A1 A Series Seiko Instruments Inc. 5  Electrical Characteristics Table 5 (Ta = +25°C, VDD = 12.0 V, VSS = 0 V unless otherwise specified) Item Symbol Condition Min. Typ. Max. Unit Test Circuit Power supply voltage V DD − 3.5 12.0 26.0 V − Current consumption I DD Nch open-drain output product Average value − 3.0 4.0 mA 1 Nch driver + built-in pull-up resistor product Average value, VOUT = "H" − 3.0 4.0 mA 1 Current consumption during reverse connection IDDREV Nch open-drain output product VDD = −26.0 V −1 − − mA 1 Nch driver + built-in pull-up resistor product VDD = −26.0 V −5 − − mA 1 Output voltage V OUT Nch open-drain output product Output transistor Nch, VOUT = "L", IOUT = 10 mA − − 0.4 V 2 Nch driver + built-in pull-up resistor product Output transistor Nch, VOUT = "L", IOUT = 10 mA − − 0.5 V 2 Output drop voltage V D Nch driver + built-in pull-up resistor product VOUT = "H", VD = VDD − VOUT − − 20 mV 2 Leakage current I LEAK Nch open-drain output product Output transistor Nch, VOUT = "H" = 26.0 V − − 10 μA3 Operating cycle t CYCLE − − 16.0 − μs − Operating frequency f CYCLE − − 62.5 − kHz − Output limit current I OM VOUT = 12.0 V 22 − 70 mA 3 Start up time t PON − − 30 − μs 4 Pull-up resistor R L Nch driver + built-in pull-up resistor product 7 10 13 k Ω −

FOR AUTOMOTIVE 125°C OPERATION HIGH-WITHSTAND VOLTAGE HIGH-SPEED UNIPOLAR DETECTION TYPE HALL IC S-57A1 A Series Rev.1.6_00 Seiko Instruments Inc. 6  Magnetic Characteristics 1. Product with S pole detection 1. 1 Product with B OP = 3.0 mT typ. Table 6 (Ta = +25°C, VDD = 12.0 V, VSS = 0 V unless otherwise specified) Item Symbol Condition Min. Typ. Max. Unit Test Circuit Operation point*1 S pole B OPS − 1.5 3.0 4.5 mT 4 Release point*2 S pole B RPS − 1.0 2.0 3.3 mT 4 Hysteresis width *3 S pole B HYSS B HYSS = BOPS − BRPS − 1.0 − mT 4 1. 2 Product with B OP = 6.0 mT typ. Table 7 (Ta = +25°C, VDD = 12.0 V, VSS = 0 V unless otherwise specified) Item Symbol Condition Min. Typ. Max. Unit Test Circuit Operation point*1 S pole B OPS − 3.0 6.0 9.0 mT 4 Release point*2 S pole B RPS − 2.5 4.5 7.5 mT 4 Hysteresis width *3 S pole B HYSS B HYSS = BOPS − BRPS − 1.5 − mT 4 2. Product with N pole detection 2. 1 Product with B OP = 6.0 mT typ. Table 8 (Ta = +25°C, VDD = 12.0 V, VSS = 0 V unless otherwise specified) Item Symbol Condition Min. Typ. Max. Unit Test Circuit Operation point*1 N pole B OPN − − 9.0 −6.0 −3.0 mT 4 Release point*2 N pole B RPN − − 7.5 −4.5 −2.5 mT 4 Hysteresis width*3 N pole B HYSN B HYSN = |BOPN − BRPN| − 1.5 − mT 4 *1. B OPN, BOPS: Operation points BOPN and B OPS are the values of magnetic fl ux density when t he output voltage (V OUT) changes after the magnetic flux density applied to the S-57A1 A Series by the magnet (N pole or S pole) is increased (by moving the magnet closer). Even when the magnetic flux density exceeds BOPN or BOPS, VOUT retains the status. *2. B RPN, BRPS: Release points BRPN and B RPS are the values of magnetic fl ux density when t he output voltage (V OUT) changes after the magnetic flux density applied to the S-57A1 A Series by the magnet (N pole or S pole) is decreased (the magnet is moved further away). Even when the magnetic flux density falls below BRPN or BRPS, VOUT retains the status. *3. B HYSN, BHYSS: Hysteresis widths BHYSN and BHYSS are the difference between BOPN and BRPN, and BOPS and BRPS, respectively. Remark The unit of magnetic density mT can be converted by using the formula 1 mT = 10 Gauss.

FOR AUTOMOTIVE 125°C OPERATION HIGH-WITHSTAND VOLTAGE HIGH-SPEED UNIPOLAR DETECTION TYPE HALL IC S-57A1 A Series Rev.1.6_00 Seiko Instruments Inc. 8  Standard Circuit S-57A1 A Series VDD VSS OUT CIN R*1 820 Ω 0.1 μF *1. Resistor (R) is unnecessary for the pull-up resistor built-in product. Figure 9 Caution The above connection diag ram and constant will not guara ntee successful operation. Perform thorough evaluation using the actual application to set the constant.

FOR AUTOMOTIVE 125°C OPERATION HIGH-WITHSTAND VOLTAGE HIGH-SPEED UNIPOLAR DETECTION TYPE HALL IC S-57A1 A Series Rev.1.6_00 Seiko Instruments Inc. 10 3. Basic operation The S-57A1 A Series c hanges the output voltage (V OUT) according to the level of the magnetic flux density (N pole or S pole) applied by a magnet. Definition of the magnetic field is performed every operating cycle indicated in " Electrical Characteristics". The following explains the operation when the magnetism detection logic is active "L". 3. 1 Product with S pole detection When the magnetic flux density of t he S pole perpendicular to the marking surface exceeds t he operation point (BOPS) after the S pole of a magnet is moved closer to the marking surface of the S-57A1 A Series, V OUT changes from "H" to "L". When the S pole of a magnet is moved further away from the marking surface of the S-57A1 A Series and the magnetic flux density is lower than the release point (BRPS), VOUT changes from "L" to "H". Figure 12 shows the relationship between the magnetic flux density and VOUT. VOUT

0 BRPS BOPS

H L Magnetic flux density (B) N pole S pole Figure 12 3. 2 Product with N pole detection When the magnetic flux density of t he N pole perpendicular to the marking surface exceeds t he operation point (BOPN) after the N pole of a magnet is moved closer to the marking surface of the S-57A1 A Series, V OUT changes from "H" to "L". When the N pole of a magnet is moved further away from the marking surface of the S-57A1 A Series and the magnetic flux density of the N pole is lowe r than the release point (B RPN), VOUT changes from "L" to "H". Figure 13 shows the relationship between the magnetic flux density and VOUT. VOUT 0BOPN BRPN BHYSN H L Magnetic flux density (B) N pole S pole Figure 13

FOR AUTOMOTIVE 125°C OPERATION HIGH-WITHSTAND VOLTAGE HIGH-SPEED UNIPOLAR DETECTION TYPE HALL IC Rev.1.6_00 S-57A1 A Series Seiko Instruments Inc. 11  Precautions

  • If the impedance of the power supply is high, the IC may malfunction due to a supply voltage drop caused by feed- through current. Take care with the pattern wiring to ensure that the impedance of the power supply is low.
  • Note that the IC may malfunction if the power supply voltage rapidly changes. When the IC is used under the environment where the power supply volt age rapidly changes, it is recommended to judge the output voltage of the IC by reading it multiple times.
  • Note that the output voltage may rarely change if the magnetic flux density between the operation point and the release point is applied to this IC continuously for a long time.
  • Do not apply an electrostatic discharge to this IC that ex ceeds the performance ratings of the built-in electrostatic protection circuit.
  • Although this IC has a built-in output current limit circuit, it may suffer phy sical damage such as product deterioration under the environment where the absolute maximum ratings are exceeded.
  • Although this IC has a built-in reve rse voltage protection circuit, it may suffer physical damage such as product deterioration under the environment where the absolute maximum ratings are exceeded.
  • The application conditions for the power supply voltage, the pull-up voltage, and the pull-up re sistor should not exceed the package power dissipation.
  • Large stress on this IC may affect on the magnetic characterist ics. Avoid large stress which is caused by bend and distortion during mounting the IC on a board or handle after mounting.
  • SII claims no responsibility for any disputes arising out of or in connection with any infringement by products including this IC of patents owned by a third party.

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  • The information described herein is subject to change without notice.
  • Seiko Instruments Inc. is not responsible for any pr oblems caused by circuits or diagrams described herein whose related industrial properties, patents, or ot her rights belong to third parties. The application circuit examples explain typical applications of the products, and do not guarant ee the success of any specific mass-production design.
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