Data Sheet 27621.6B* 3141 THRU 3144 SENSITIVE HALL-EFFECT SWITCHES FOR HIGH-TEMPERATURE OPERATION X These Hall-effect switches are monolithic integrated circuits with tighter magnetic specifications, designed to operate continuously over extended temperatures to +150°C, and are more stable with both temperature and supply voltage changes. The unipolar switching characteristic makes these devices ideal for use with a simple bar or rod magnet. The four basic devices (3141, 3142, 3143, and 3144) are identical except for magnetic switch points. CC 2 3 OUTPUT SUPPLY 1 GROUND V Dwg. PH-003A Each device includes a voltage regulator for operation with supply voltages of 4.5 to 24 volts, reverse battery protection diode, quadratic Hall-voltage generator, temperature compensation circuitry, smallsignal amplifier, Schmitt trigger, and an open-collector output to sink up to 25 mA. With suitable output pull up, they can be used with bipolar or CMOS logic circuits. The A3141– and A3142– are improved replacements for the UGN/UGS3140–; the A3144– is the improved replacement for the UGN/UGS3120–. The first character of the part number suffix determines the device operating temperature range. Suffix ‘E–’ is for the automotive and industrial temperature range of -40°C to +85°C. Suffix ‘L–’ is for the automotive and military temperature range of -40°C to +150°C. Three package styles provide a magnetically optimized package for most applications. Suffix ‘–LT’ is a miniature SOT89/TO-243AA transistor package for surface-mount applications; suffix ‘–UA’ is a three-lead ultra-mini-SIP. Pinning is shown viewed from branded side. FEATURES and BENEFITS ABSOLUTE MAXIMUM RATINGS at TA = +25°C Supply Voltage, VCC ............................ 28 V Reverse Battery Voltage, VRCC ........... -35 V Magnetic Flux Density, B .......... Unlimited Output OFF Voltage, VOUT .................. 28 V Reverse Output Voltage, VOUT ........... -0.5 V Continuous Output Current, IOUT ...... 25 mA ■ ■ ■ ■ ■ ■ ■ ■ Superior Temp. Stability for Automotive or Industrial Applications 4.5 V to 24 V Operation … Needs Only An Unregulated Supply Open-Collector 25 mA Output … Compatible with Digital Logic Reverse Battery Protection Activate with Small, Commercially Available Permanent Magnets Solid-State Reliability Small Size Resistant to Physical Stress Operating Temperature Range, TA Suffix ‘E–’ .................. -40°C to +85°C Suffix ‘L–’ ................ -40°C to +150°C Storage Temperature Range, TS .............................. -65°C to +170°C Always order by complete part number, e.g., A3141ELT . 3141 THRU 3144 SENSITIVE HALL-EFFECT SWITCHES FOR HIGH-TEMP. OPERATION FUNCTIONAL BLOCK DIAGRAM 1 VCC REG. X 3 OUTPUT 2 GROUND Dwg. FH-005-2 ELECTRICAL CHARACTERISTICS at VCC = 8 V over operating temperature range. Limits Characteristic Symbol Test Conditions Min. Typ. Max. Units Supply Voltage VCC Operating 4.5 — 24 V VOUT(SAT) IOUT = 20 mA, B > BOP — 175 400 mV Output Leakage Current IOFF VOUT = 24 V, B < BRP — <1.0 10 µA Supply Current ICC B < BRP (Output OFF) — 4.4 9.0 mA Output Rise Time tr RL = 820 Ω, CL = 20 pF — 0.04 2.0 µs Output Fall Time tf RL = 820 Ω, CL = 20 pF — 0.18 2.0 µs Output Saturation Voltage MAGNETIC CHARACTERISTICS in gauss over operating supply voltage range. Part Numbers* A3141– Characteristic BOP at TA = 25°C over operating temp. range BRP at TA = 25°C over operating temp. range Bhys at TA = 25°C over operating temp. range A3142– Min. Typ. Max. Min. Typ. 50 100 160 130 30 100 175 10 45 10 A3143– A3144– Max. Min. Typ. Max. Min. Typ. Max. 180 230 220 280 340 70 — 350 115 180 245 205 280 355 35 — 450 130 75 125 175 165 225 285 50 — 330 45 145 60 125 190 150 225 300 25 — 430 20 55 80 30 55 80 30 55 80 20 55 — 20 55 80 30 55 80 30 55 80 20 55 — NOTES: Typical values are at TA = +25°C and VCC = 8 V. BOP = operate point (output turns ON); BRP = release point (output turns OFF); Bhys = hysteresis (BOP - BRP). 1 gauss (G) is exactly equal to 0.1 millitesla (mT). *Complete part number includes a suffix to identify operating temperature range (E- or L-) and package type ( -LT or -UA). 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 Copyright © 1993, 2002 Allegro MicroSystems, Inc. 3141 THRU 3144 SENSITIVE HALL-EFFECT SWITCHES FOR HIGH-TEMP. OPERATION TYPICAL OPERATING CHARACTERISTICS A3142– SWITCH POINTS OUTPUT SATURATION VOLTAGE 300 400 I OUT = 20 mA V =8V V CC = 4.5–24 V CC SATURATION VOLTAGE IN mV SWITCH POINT IN GAUSS 300 OPERATE POINT 200 RELEASE POINT 100 0 -25 25 50 100 75 125 100 0 -50 0 -50 200 150 -25 0 25 50 75 100 125 150 AMBIENT TEMPERATURE IN °C AMBIENT TEMPERATURE IN ° C Dwg. GH-044 Dwg. GH-040-1 SUPPLY CURRENT SUPPLY CURRENT 10 7.0 VCC = 8 V B ≥ B OP SUPPLY CURRENT IN mA SUPPLY CURRENT IN mA 8.0 B ≥ B OP 6.0 B ≤ B RP 4.0 6.0 5.0 T A = +25°C 2.0 B ≤ B RP 4.0 0 0 5 10 15 20 25 SUPPLY VOLTAGE IN VOLTS -50 -25 0 25 75 100 125 150 AMBIENT TEMPERATURE IN °C Dwg. GH-041-1 * Complete part number includes a suffix denoting operating temperature range (E- or L-) and package type ( -LT, -U, or -UA). www.allegromicro.com 50 Dwg. GH-039-1 3141 THRU 3144 SENSITIVE HALL-EFFECT SWITCHES FOR HIGH-TEMP. OPERATION TYPICAL OPERATING CHARACTERISTICS (cont.) SENSOR LOCATIONS (±0.005” [0.13 mm] die placement) CHANGE IN OPERATE POINT Suffix “LT” ACTIVE AREA DEPTH 0.0305" 0.775 mm NOM 20 0.043" 1.09 mm A 1 2 3 Dwg. MH-008-2D Suffix “UA” ACTIVE AREA DEPTH 0.0195" 0.50 mm NOM CHANGE IN OPERATE POINT IN GAUSS 0.089" 2.26 mm 15 T A = +25°C 10 5.0 0 -5.0 0 0.082" 2.07 mm 5 10 15 20 25 SUPPLY VOLTAGE IN VOLTS Dwg. GH-042-1 Allegro 0.055" 1.39 mm A BRANDED SURFACE 1 2 3 Dwg. MH-011-10A OPERATION The output of these devices (pin 3) switches low when the magnetic field at the Hall sensor exceeds the operate point threshold (BOP). At this point, the output voltage is VOUT(SAT). When the magnetic field is reduced to below the release point threshold (BRP), the device output goes high. The difference in the magnetic operate and release points is called the hysteresis (Bhys) of the device. This built-in hysteresis allows clean switching of the output even in the presence of external mechanical vibration and electrical noise. Extensive applications information for Hall-effect sensors is available in: • Hall-Effect IC Applications Guide, Application Note 27701; • Hall-Effect Devices: Soldering, Gluing, Potting, Encapsulating, and Lead Forming, Application Note 27703.1; • Soldering of Through-Hole Hall-Sensor Dervices, Application Note 27703; and • Soldering of Surface-Mount Hall-Sensor Devices, Application Note 27703.2. All are provided in Allegro Electronic Data Book, AMS-702. or at www.allegromicro.com 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 3141 THRU 3144 SENSITIVE HALL-EFFECT SWITCHES FOR HIGH-TEMP. OPERATION PACKAGE DESIGNATOR ‘LT’ (SOT89/TO-243AA) Dimensions in Inches (for reference only) 0.181 0.173 0.072 0.064 0.167 0.155 0.063 0.055 2 1 3 Dimensions in Millimeters (controlling dimensions) 0.0173 0.0138 0.090 0.084 0.102 0.090 4.25 3.94 0.0189 0.0142 0.0221 0.0173 0.047 0.035 0.059 BSC 4.60 4.40 1.83 1.62 2 1 BSC 3.00 BSC Dwg. MA-009-3A in Dwg. MA-009-3A mm 2.5 2.0 0.098 0.079 B B 0.031 0.102 A 0.8 2.6 A 0.181 1 2 2.29 2.13 0.56 0.44 1.50 BSC 2.60 2.29 3 0.44 0.35 0.48 0.36 1.20 0.89 0.118 1.60 1.40 4.6 3 0.047 0.028 0.031 TYP TYP 1 2 3 1.2 0.7 0.8 TYP TYP Pads 1, 2, 3, and A — Standard SOT89 Layout Pads 1, 2, 3, and B — Low-Stress Version Pads 1, 2, and 3 only — Lowest Stress, But Not Self Aligning Pads 1, 2, 3, and A — Standard SOT89 Layout Pads 1, 2, 3, and B — Low-Stress Version Pads 1, 2, and 3 only — Lowest Stress, But Not Self Aligning Dwg. MA-012-3 in Dwg. MA-012-3 mm NOTES: 1. Exact body and lead configuration at vendor’s option within limits shown. 2. Supplied in bulk pack (500 pieces per bag) or add "TR" to part number for tape and reel. 3. Only low-temperature (≤240°C) reflow-soldering techniques are recommended for SOT89 devices. www.allegromicro.com 3141 THRU 3144 SENSITIVE HALL-EFFECT SWITCHES FOR HIGH-TEMP. OPERATION PACKAGE DESIGNATOR ‘UA’ Dimensions in Millimeters (for reference only) Dimensions in Inches (controlling dimensions) 0.164 0.159 4.17 4.04 0.062 0.058 45° 1.57 1.47 45° 3.10 2.97 0.122 0.117 45° 45° 0.085 1 2 3 0.031 2.16 1 2 0.79 3 MAX MAX 0.640 0.600 16.26 15.24 0.0173 0.0138 0.0189 0.0142 SEE NOTE 0.44 0.35 0.48 0.36 SEE NOTE 1.27 0.050 BSC BSC Dwg. MH-014E in Dwg. MH-014E mm Radial Lead Form (order A314xxUA-LC) NOTES: 1. Tolerances on package height and width represent allowable mold offsets. Dimensions given are measured at the widest point (parting line). 2. Exact body and lead configuration at vendor’s option within limits shown. 3. Height does not include mold gate flash. 4. Recommended minimum PWB hole diameter to clear transition area is 0.035" (0.89 mm). 5. Where no tolerance is specified, dimension is nominal. 6. Supplied in bulk pack (500 pieces per bag). 1 2 3 0.108" (2.74 mm) 0.620" 0.500" (15.7 mm 12.7 mm) 0.100" (2.5 mm) Dwg. MH-026 NOTE: Lead-form dimensions are the nominals produced on the forming equipment. No dimensional tolerance is implied or guaranteed for bulk packaging (500 pieces per bag). 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 3141 THRU 3144 SENSITIVE HALL-EFFECT SWITCHES FOR HIGH-TEMP. OPERATION HALL-EFFECT SENSORS UNIPOLAR HALL-EFFECT DIGITAL SWITCHES Partial Part Number A3121x A3122x A3123x A3141x A3142x A3143x A3144x A3161E A3163E A3240x A3250x A3251x Operate Release Hysteresis Point (G) Point (G) (G) Over Oper. Voltage & Temp. Range 220 to 500 80 to 410 260 to 430 120 to 360 230 to 470 160 to 330 30 to 175 10 to 145 115 to 245 60 to 190 205 to 355 150 to 300 35 to 450 25 to 430 <160 (Typ 130) >30 (Typ 110) <160 (Typ 98) >30 (Typ 79) <50 (Typ 35) >5 (Typ 25) <50 to >350 _ <50 to >350 _ Oper. Temp. Packages 60 to 150 70 to 140 70 to 140 20 to 80 30 to 80 30 to 80 >20 5 to 80 5 to 40 Typ 10 5 to 35 5 to 35 E, L E, L E, L E, L E, L E, L E, L E E E, L J, L J, L LT, UA LT, UA LT, UA LT, UA LT, UA LT, UA LT, UA LT, UA LT, UA LH, LT, UA UA UA A3361E <125 >40 5 to 30 E LH, LT, UA A3362E <125 >40 5 to 30 E LH, LT, UA Replaces and Comments 3019, 3113, 3119 3040, 3140 3020, 3120 2-wire operation 2-wire chopper stabilized programmable, chopper stabilized programmable, chopper stabilized 2-wire, chopper stabilized, output normally high 2-wire, chopper stabilized, output normally low MICROPOWER OMNIPOLAR HALL-EFFECT DIGITAL SWITCHES Partial Part Number Operate Release Hysteresis Points (G) Points (G) (G) Over Oper. Voltage & Temp. Range A3209E A3210E A3212E >-60, <60 >-60, <60 >-55, <55 <-5, >5 <-5, >5 <-10, >10 Typ 7.7 Typ 7.7 Typ. 8 Oper. Temp. Packages Average Supply Current (µA) E E E LH, UA LH, UA LH, UA <425 (Typ 145) <60 (Typ 8.8) <10 (Typ 4.2) BIPOLAR HALL-EFFECT DIGITAL SWITCHES Partial Part Number UGx3132 UGx3133 UGx3134 A3260x Operate Release Hysteresis Point (G) Point (G) (G) Over Oper. Voltage & Temp. Range <95 (Typ 32) <75 (Typ 32) -40 to 50 <30 (Typ 10) >-95 (Typ -20) >30 (Typ 52) >-75 (Typ -20) >30 (Typ 52) -50 to 40 5 to 55 >-30 (Typ -10) Typ 20 Oper. Temp. Packages K, L, S K, L, S E, L E, L LT, UA LT, UA LT, UA LH, LT, UA Replaces and Comments 3030, 3130, 3131 2 wire, chopper stabilized Notes: 1) Typical data is at TA = +25°C and nominal operating voltage. 2) “x” = Operating Temperature Range [suffix letter or (prefix)]: S (UGN) = -20°C to +85°C, E = -40°C to +85°C, J = -40°C to +115°C, K (UGS) = -40°C to +125°C, L (UGL) = -40°C to +150°C. www.allegromicro.com 3141 THRU 3144 SENSITIVE HALL-EFFECT SWITCHES FOR HIGH-TEMP. OPERATION The products described herein are manufactured under one or more of the following U.S. patents: 5,045,920; 5,264,783; 5,442,283; 5,389,889; 5,581,179; 5,517,112; 5,619,137; 5,621,319; 5,650,719; 5,686,894; 5,694,038; 5,729,130; 5,917,320; and other patents pending. Allegro MicroSystems, Inc. reserves the right to make, from time to time, such departures from the detail specifications as may be required to permit improvements in the performance, reliability, or manufacturability of its products. Before placing an order, the user is cautioned to verify that the information being relied upon is current. Allegro products are not authorized for use as critical components in life-support appliances, devices, or systems without express written approval. The information included herein is believed to be accurate and reliable. However, Allegro MicroSystems, Inc. assumes no responsibility for its use; nor for any infringements of patents or other rights of third parties that may result from its use. 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000