3175

3175 AND 3177 HALL-EFFECT LATCHES These Hall-effect latches are temperature-stable and stress-resistant sensors especially suited for electronic commutation in brushless dc motors using multipole ring magnets. Each device includes a voltage regulator, quadratic Hall voltage generator, temperature compensation circuit, signal amplifier, Schmitt trigger, and an open-collector output on a single silicon chip. The on-board regulator permits operation with supply voltages of 4.5 volts to 18 volts. The switch output can sink 10 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 surface-mount SOT-89/ TO-243AA package; suffixes ‘U’ and ‘UA’ feature wire leads for through-hole mounting. Data Sheet 27609.4A V X CC 1 2 3 GROUND OUTPUT SUPPLY FEATURES I Symmetrical Response I 4.5 V to 18 V Operation I Open-Collector Output I Reverse Battery Protection I Activate With Small, Commercially Available Permanent Magnets I Solid-State Reliability I Small Size I Superior Temperature Stability I Resistant to Physical Stress Dwg. PH-003A Pinning is shown viewed from branded side. ABSOLUTE MAXIMUM RATINGS Supply Voltage, VCC . . . . . . . . . . . . . 18 V Reverse Battery Voltage, VRCC . . . . -18 V Magnetic Flux Density, B . . . . Unlimited Output OFF Voltage, VOUT . . . . . . . . 18 V Continuous Output Current, IOUT . 15 mA Operating Temperature Range, TA . . . . . . . . . . . . . . . -20°C to +85°C Storage Temperature Range, TS . . . . . . . . . . . . . . . -65°C to +150°C Always order by complete part number, e.g., UGN3175LT . See Magnetic Characteristics table for differences between devices. 3175 AND 3177 HALL-EFFECT LATCHES FUNCTIONAL BLOCK DIAGRAM 1 VCC REG. X 3 OUTPUT GROUND 2 Dwg. FH-005-2 ELECTRICAL CHARACTERISTICS at TA = +25°C, VCC = 4.5 V to 18 V (unless otherwise noted). Limits Characteristic Supply Voltage Output Saturation Voltage Output Leakage Current Supply Current Output Rise Time Output Fall Time Symbol VCC VOUT(SAT) IOFF ICC tr tf Test Conditions Operating VCC = 18 V, IOUT = 10 mA, B > BOP VOUT = 18 V, B < BRP VCC = 4.5 V, B < BRP (Output OFF) VCC = 12 V, RL = 1.1 kΩ, CL = 20 pF VCC = 12 V, RL = 1.1 kΩ, CL = 20 pF Min. 4.5 — — — — — Typ. — 200 0.05 5.0 0.04 0.18 Max. 18 300 5.0 10 2.0 2.0 Units V mV µA mA µs µs MAGNETIC CHARACTERISTICS in gauss; VCC = 4.5 V to 18 V. Characteristic Operate Point, BOP Part Number* UGN3175 UGN3177 Release Point, BRP UGN3175 UGN3177 Hysteresis, Bhys UGN3175 UGN3177 TA = +25°C Min. 25 50 -170 -150 100 100 Typ. — — — — 200 200 Max. 170 150 -25 -50 — — Min. 15 25 -180 -150 80 50 TA = -20°C to +85°C Typ. — — — — 180 180 Max. 180 150 -15 -25 — — NOTE: As used here, negative flux densities are defined as less than zero (algebraic convention). Complete part number includes a suffix denoting package type (LT, U, or UA). 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 Copyright © 1991, 1999, Allegro MicroSystems, Inc. 3175 AND 3177 HALL-EFFECT LATCHES SENSOR LOCATIONS (±0.005” [0.13mm] die placement) Suffix “LT” ACTIVE AREA DEPTH 0.030" 0.76 mm NOM 0.090" 2.30 mm 0.045" 1.15 mm 200 TYPICAL OPERATING CHARACTERISTICS OPERATE POINT SWITCH POINT IN GAUSS 100 V 0 CC = 14 V A 1 2 3 -100 RELEASE POINT Dwg. MH-008-1B -200 -30 -10 10 30 50 70 90 Suffix “U” ACTIVE AREA DEPTH 0.015" 0.38 mm NOM 0.092" 2.35 mm AMBIENT TEMPERATURE IN °C Dwg. GH-020 0.072" 1.83 mm A BRANDED SURFACE 1 2 3 Dwg. MH-002-3B Suffix “UA” ACTIVE AREA DEPTH 0.018" 0.46 mm NOM 0.083" 2.12 mm A BRANDED SURFACE 1 2 3 0.055" 1.39 mm Dwg. MH-011B 3175 AND 3177 HALL-EFFECT LATCHES PACKAGE DESIGNATOR ‘LT’ Dimensions in Inches (for reference only) 0.173 0.181 0.064 0.072 0.155 0.167 0.090 0.102 0.055 0.063 0.014 0.017 1 2 3 0.084 0.090 0.035 0.047 0.059 BSC 0.014 0.019 0.017 0.022 0.118 BSC Dwg. MA-009-3 in Dimensions in Millimeters (controlling dimensions) 4.40 4.60 1.62 1.83 3.94 4.25 2.29 2.60 1.40 1.60 0.35 0.44 1 2 3 2.13 2.29 0.89 1.20 1.50 BSC 0.36 0.48 0.44 0.56 3.00 BSC Dwg. MA-009-3 mm 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 3175 AND 3177 HALL-EFFECT LATCHES PACKAGE DESIGNATOR ‘U’ Dimensions in Inches (controlling dimensions) 0.183 0.178 0.063 0.059 Dimensions in Millimeters (for reference only) 4.65 4.52 1.60 1.50 0.181 0.176 45° 0.086 MAX 1 2 3 4.60 4.47 45° 2.18 MAX 1 2 3 0.018 0.46 0.600 0.560 0.016 SEE NOTE 0.015 15.24 14.23 0.41 SEE NOTE 0.38 0.050 0.100 Dwg. MH-003D in 1.27 2.54 Dwg. MH-003D mm Devices in the ‘U’ package are NOT RECOMMENDED FOR NEW DESIGN 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). 3175 AND 3177 HALL-EFFECT LATCHES PACKAGE DESIGNATOR ‘UA’ Dimensions in Inches (controlling dimensions) 0.164 0.159 Dimensions in Millimeters (for reference only) 4.17 4.04 45° 0.062 0.058 45° 1.57 1.47 0.122 0.117 3.10 2.97 45° 0.031 2.16 MAX 45° 0.79 0.085 MAX 1 2 3 1 2 3 0.640 0.600 0.015 16.26 15.24 0.38 SEE NOTE 0.016 SEE NOTE 0.41 0.050 BSC Dwg. MH-014D in 1.27 BSC Dwg. MH-014D mm 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. 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 3175 AND 3177 HALL-EFFECT LATCHES HALL-EFFECT SENSORS SELECTION GUIDE Partial Part Number 3240 3210 3361 3362 3161 3141 3235 5140 3142 3143 3144 3122 3123 3121 3150 Avail. Oper. Characteristics at TA = +25°C Temp. BOP(max) BRP(min) Bhys(typ) Features HALL-EFFECT UNIPOLAR SWITCHES in order of BOP and Bhys E/L E E E E E/L S E E/L E/L E/L E/L E/L E/L J +50 ±70 +120 +120 +160 +160 +175 -25 +200 +230 +340 +350 +400 +440 +450 +40 to +850 +5.0 ±5.0 +50 +50 +30 +10 +25 -175 +50 +75 +165 +50 +140 +180 +125 – 10 7.7 5.0* 5.0* 20 55 15* 15* 55 55 55 55 105 105 105 20 † chopper stabilized micropower, chopper stabilized 2-wire, chopper stabilized 2-wire, chopper stabilized 2-wire output 1 output 2 300 mA output Notes 1 2 2 1, 3 programmable, chopper stabilized 1 HALL-EFFECT LATCHES & BIPOLAR SWITCHES in order of BOP and Bhys 3260 E/L +30 -30 20 bipolar, chopper stabilized 3280 E/L +40 -40 45 chopper stabilized 3134 E/L +50 -50 27 bipolar switch 3133 K/L/S +75 -75 52 bipolar switch 3281 E/L +90 -90 100 chopper stabilized 3132 K/L/S +95 -95 52 bipolar switch 3187 E/L +150 -150 100* 3177 S +150 -150 200 3625 S +150 -150 200 900 mA outputs 1, 3, 5 3626 S +150 -150 200 400 mA outputs 1, 3, 5 3195 E/L +160 -160 220 1, 4 3197 L +160 -160 230 1 3175 S +170 -170 200 3188 E/L +180 -180 200* 3283 E/L +180 -180 300 chopper stabilized 3189 E/L +230 -230 100* 3275 S +250 -250 100* 5 3185 E/L +270 -270 340* Operating Temperature Ranges: S = -20°C to +85°C, E = -40°C to +85°C, J = -40°C to +115°C, K = -40°C to +125°C, L = -40°C to +150°C Notes 1. Protected. 2. Output 1 switches on south pole, output 2 switches on north pole for 2-phase, bifilar-wound, unipolar-driven brushless dc motor control. 3. Power driver output. 4. Active pull down. 5. Complementary outputs for 2-phase bifilar-wound, unipolar-driven brushless dc motor control. *Minimum. † Latches will not switch on removal of magnetic field; bipolar switches may switch on removal of field but require field reversal for reliable operation over operating temperature range. 3175 AND 3177 HALL-EFFECT LATCHES 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 design of its products. 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 which may result from its use. 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000