Data Sheet 27631.2C 3132 AND 3133 ULTRA-SENSITIVE BIPOLAR HALL-EFFECT SWITCHES X These Hall-effect switches are designed for magnetic actuation using a bipolar magnetic field, i.e., a north-south alternating field. They combine extreme magnetic sensitivity with excellent stability over varying temperature and supply voltage. The high sensitivity permits their use with multi-pole ring magnets over relatively large distances. 2 3 OUTPUT 1 GROUND CC SUPPLY V Each device includes a voltage regulator, quadratic Hall voltage generator, temperature stability circuit, signal amplifier, Schmitt trigger, and open-collector output on a single silicon chip. The on-board regulator permits operation with supply voltages of 4.5 to 24 V. The switch output can sink up to 25 mA. With suitable output pull up, they can be used directly with bipolar or MOS logic circuits. The three package styles available provide a magnetically optimized package for most applications. Suffix ‘LT’ is a miniature SOT89/TO243AA transistor package for surface-mount applications; suffix ‘UA’ features wire leads for through-hole mounting. Prefix ‘UGN’ devices are rated for continuous operation over the temperature range of -20°C to +85°C, prefix ‘UGS’ devices over an extended range of -40°C to +125°C, and prefix ‘UGL’ devices over the range of -40°C to +150°C. FEATURES Dwg. PH-003A Pinning is shown viewed from branded side. ■ 4.5 V to 24 V Operation ■ Reverse Battery Protection ■ Superior Temperature Stability ■ Superior Supply Voltage Stability ABSOLUTE MAXIMUM RATINGS Supply Voltage, VCC . . . . . . . . . . . . . 25 V Reverse Battery Voltage, VRCC . . . . -35 V Magnetic Flux Density, B . . . . Unlimited Output OFF Voltage, VOUT . . . . . . . . 25 V Continuous Output Current, IOUT . 25 mA Operating Temperature Range, TA Prefix UGL . . . . . . . -40°C to +150°C Prefix UGN . . . . . . . . -20°C to +85°C Prefix UGS . . . . . . . -40°C to +125°C Storage Temperature Range, TS . . . . . . . . . . . . . . . -65°C to +150°C ■ Activate with Multi-Pole Ring Magnets ■ Solid-State Reliability ■ Small Size ■ Constant Output Amplitude ■ Resistant to Physical Stress Always order by complete part number including prefix and suffix, e.g., UGN3132LT . 3132 AND 3133 BIPOLAR HALL-EFFECT SWITCHES FUNCTIONAL BLOCK DIAGRAM 1 VCC REG. X 3 OUTPUT 2 GROUND Dwg. FH-005-2 ELECTRICAL CHARACTERISTICS at TA = +25°C Limits Characteristic Symbol Supply Voltage VCC Min. Typ. Max. Units Operating 4.5 — 24 V VOUT(SAT) IOUT = 20 mA, B ≥ BOP — 145 400 mV Output Leakage Current IOFF VOUT = 24 V, B ≤ BRP — <1.0 10 µA Supply Current ICC VCC = 24 V, B ≤ BRP — 4.3 9.0 mA Output Saturation Voltage Test Conditions Output Rise Time tr VCC = 12 V, RL = 820 Ω, CL = 20 pF — 0.04 2.0 µs Output Fall Time tf VCC = 12 V, RL = 820 Ω, CL = 20 pF — 0.18 2.0 µs MAGNETIC CHARACTERISTICS over operating temperature and voltage range. Limits Characteristic Symbol Operate Point BOP Release Point Hysteresis BRP Bhys Device Type* Min. Typ. Max. Units 3132 — 32 95 G 3133 — 32 75 G 3132 -95 -20 — G 3133 -75 -20 — G Both 30 52 — G NOTE: As used here, negative flux densities are defined as less than zero (algebraic convention.) Typical values are at TA = +25°C and VCC = 12 V. 1 gauss (G) is exactly equal to 0.1 millitesla (mT). * Complete part number includes a prefix denoting operating temperature range (UGL, UGN, or UGS) and a suffix denoting package type (LT or UA). 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 Copyright © 1996, 2003 Allegro MicroSystems, Inc. 3132 AND 3133 BIPOLAR HALL-EFFECT SWITCHES TYPICAL CHARACTERISTICS 40 40 OPERATE POINT OPERATE POINT 20 SWITCH POINT IN GAUSS SWITCH POINT IN GAUSS 20 VCC = 12 V 0 I OUT = 20 mA RELEASE POINT -20 T A = 25°C 0 I OUT = 20 mA -20 RELEASE POINT -40 -50 -25 0 25 50 75 AMBIENT TEMPERATURE IN ° C -40 4.0 125 100 8.0 12 16 SUPPLY VOLTAGE IN VOLTS Dwg. GH-022 Dwg. GH-021 6.0 200 I OUT = 20 mA VCC = 12 V SUPPLY CURRENT IN mA SATURATION VOLTAGE IN mV B ≥ B OP 175 150 5.0 4.0 B ≤ B RP 125 100 -50 28 24 20 -25 0 25 50 75 100 125 -25 0 25 50 75 AMBIENT TEMPERATURE IN ° C AMBIENT TEMPERATURE IN ° C Dwg. GH-024 Powering up in the absence of a magnetic field (less than BOP and higher than BRP) will allow an indeterminate output state. The correct state is warranted after the first excursion beyond BOP or BRP. www.allegromicro.com 3.0 -50 100 125 Dwg. GH-023 Bipolar switches may switch on removal of field but require field reversal for reliable operation over temperature range; latches will not switch on removal of magnetic field. 3132 AND 3133 BIPOLAR HALL-EFFECT SWITCHES SENSOR LOCATIONS (±0.005” [0.13mm] die placement) SUFFIX “LT” ACTIVE AREA DEPTH 0.0305" 0.775 mm NOM 0.089" 2.26 mm 0.043" 1.09 mm A 1 2 3 Dwg. MH-008-2D SUFFIX “UA” ACTIVE AREA DEPTH 0.0195" 0.50 mm NOM 0.082" 2.07 mm 0.055" 1.39 mm A BRANDED SURFACE 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. 1 2 3 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. Dwg. MH-011-10A Allegro 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 3132 AND 3133 BIPOLAR HALL-EFFECT SWITCHES PACKAGE DESIGNATOR ‘LT’ (SOT89/TO-243AA) Dimensions in Inches (for reference only) 0.181 0.173 0.072 0.064 0.167 0.155 1 2 0.063 0.055 0.102 0.090 3 Dimensions in Millimeters (controlling dimensions) 0.0173 0.0138 0.090 0.084 4.25 3.94 0.0189 0.0142 0.0221 0.0173 0.047 0.035 0.059 4.60 4.40 1.83 1.62 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 4.6 0.181 1 2 2.29 2.13 0.56 0.44 1.50 0.118 BSC 2.60 2.29 3 0.44 0.35 0.48 0.36 1.20 0.89 BSC BSC 2 1 1.60 1.40 3 0.047 1 2 3 1.2 0.028 0.031 0.7 0.8 TYP TYP 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 3132 AND 3133 BIPOLAR HALL-EFFECT SWITCHES 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° 0.122 0.117 3.10 2.97 45° 0.085 1 2 3 45° 0.031 2.16 MAX 1 2 0.79 3 MAX 0.0173 0.0138 0.640 0.600 0.0189 0.0142 SEE NOTE 0.44 0.35 16.26 15.24 0.48 0.36 SEE NOTE 0.050 BSC 1.27 BSC Dwg. MH-014E in Dwg. MH-014E mm Radial Lead Form (order UGx313xUA-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. 1 3. Height does not include mold gate flash. 2 3 0.108" (2.74 mm) 0.620" 0.500" (15.7 mm 12.7 mm) 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). 0.100" (2.5 mm) NOTE: Dwg. MH-026 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