Data Sheet 27632.2a 3275 COMPLEMENTARY-OUTPUTS HALL-EFFECT LATCH X Type UGN3275K latching Hall-effect sensor ICs are bipolar integrated circuits designed for electronic commutation of brushless dc motors. They feature dual complementary outputs. The latches are typically used to sense matched magnetic flux densities of alternating polarity from multipole ring magnets. 2 3 OUTPUT 4 GROUND 1 OUTPUT CC SUPPLY V Each sensor IC includes a Hall voltage generator, operational amplifier, Schmitt trigger, voltage regulator, and dual bipolar output transistors. The regulator allows use of the integrated circuit with supply voltages of 4.5 V to 24 V. T C U D Y L O N R P EO If the Hall cell is exposed to a magnetic flux density greater than the operate threshold (BOP), OUTPUT goes low (turns on) and OUTPUT goes high (turns off). The outputs will hold (latch) this state until magnetic field reversal exposes the Hall cell to a magnetic flux density below the release threshold (B RP) when OUTPUT will go high (off) and OUTPUT will go low (on). This state is also latched. Under any condition one output is on while the other is off. Because the operating state switches only with magnetic field reversal, and not merely with a change in the strength, these integrated circuits qualify as true Hall-effect latches. D C E N E U N ER I T F E N R O R C S FO I D — Dwg. PH-002 Pinning is shown viewed from branded side. These complementary-output Hall-effect latches are supplied in a four-pin plastic SIP, 0.200" (5.08 mm) wide, 0.130" (3.3 mm) high, and 0.060" (1.54 mm) thick. FEATURES ABSOLUTE MAXIMUM RATINGS Power Supply, VCC . . . . . . . . . . . . . . . . 25 V Magnetic Flux Density, B . . . . . . Unlimited ■ ■ ■ ■ ■ ■ ■ Operable with Multipole Ring Magnets High Reliability Small Size Output Compatible with All Digital Logic Families 4.5 V to 24 V Operation High Hysteresis Level Minimizes Stray-Field Problems Complementary Outputs Output OFF Voltage, VOUT . . . . . . . . . . 25 V Output ON Current, IOUT . . . . . . . . . . 50 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: UGN3275K . 3275 COMPLEMENTARY-OUTPUTS HALL-EFFECT LATCH ELEMENT LOCATION ACTIVE AREA DEPTH 0.0165" 0.42 mm NOM FUNCTIONAL BLOCK DIAGRAM 0.096" 2.44 mm 1 0.047" 1.21 mm X 1 2 3 2 OUTPUT 3 OUTPUT 4 GROUND REG. A BRANDED SURFACE VCC 4 Dwg. FH-002 Dwg. MH-001-2B ELECTRICAL CHARACTERISTICS at TA = +25°C, VCC = 4.5 V to 24 V (unless otherwise noted). Characteristic Symbol Supply Voltage VCC Output Saturation Voltage VOUT(SAT) Test Conditions Min. Typ. Max. Units Operating 4.5 — 24 V VCC = 4.5 V, IOUT = 20 mA, B > BOP — — 400 mV Output Leakage Current IOFF VOUT = 24 V, VCC = 24 V, B < BRP — — 10 µA Supply Current lCC VCC = 24 V, B < BRP — — 7.0 mA Output Rise Time tr VCC = 12 V, RL = 820 Ω, CL = 20 pF — 0.04 0.4 µs Output Fall Time tf VCC = 12 V, RL = 820 Ω, CL = 20 pF — 0.18 0.4 µs MAGNETIC CHARACTERISTICS TA = +25°C TA = -20°C to +85°C Characteristic Symbol Min. Max. Min. Max. Units Operate Point BOP 25 250 15 250 G Release Point BRP -250 -25 -250 -15 G Hysteresis Bhys 100 — 100 — G NOTES: 1. As used here, negative flux densities are defined as less than zero (algebraic convention). 2. 1 gauss (G) is exactly equal to 0.1 millitesla (mT). 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 Copyright © 1991, 2002 Allegro MicroSystems, Inc. 3275 COMPLEMENTARY-OUTPUTS HALL-EFFECT LATCH Dimensions in Inches (controlling dimensions) Dimensions in Millimeters (for reference only) 5.28 5.16 0.208 0.203 0.063 0.059 45° 1.60 1.50 45° 3.51 3.38 0.138 0.133 45° 45° 0.085 1 2 3 2.16 0.033 4 1 2 3 0.84 4 MAX MAX 0.0173 0.0138 0.600 0.560 0.44 0.35 15.24 14.23 SEE NOTE SEE NOTE 0.0189 0.0142 0.48 0.36 0.050 BSC 1.27 BSC Dwg. MH-009D mm Dwg. MH-009D in Surface-Mount Lead Form (Suffix -TL) 0.095 2.41 ±0.005 ±0.13 0.002 0.051 MAX 0.004 0°–8° MAX MAX 0.10 0.020 MIN FLAT MAX Dwg. MH-015 in 0°–8° 0.51 MIN FLAT Dwg. MH-015 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. 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). 3275 COMPLEMENTARY-OUTPUTS HALL-EFFECT LATCH HALL-EFFECT SENSOR ICS LATCHING HALL-EFFECT DIGITAL SWITCHES Partial Part Number UGN3175 UGN3177 A3185x A3187x A3188x A3189x A3280x A3281x A3283x Operate Release Hysteresis Point (G) Point (G) (G) Over Oper. Voltage & Temp. Range 15 to 180 25 to 150 140 to 300 50 to 175 80 to 200 50 to 250 5 to 40 15 to 90 100 to 180 -180 to -15 -150 to -25 -300 to -140 -175 to -50 -200 to -80 -250 to -50 -40 to -5 -90 to -15 -180 to -100 >80 (Typ 180) >50 (Typ 180) 280 to 600 100 to 350 160 to 400 100 to 500 10 to 80 30 to 180 <400 (Typ 300) Oper. Temp. Packages S S E/L E/L E/L E/L E/L E/L E/L LT, UA LT, UA LT, UA LT, UA LT, UA LT, UA LH, LT, UA LH, LT, UA LH, LT, UA Replaces and Comments 3077, 3175, 3177 3075, 3076 chopper stabilized chopper stabilized chopper stabilized “PROTECTED” LATCHING HALL-EFFECT DIGITAL SWITCHES Partial Part Number Operate Release Hysteresis Point (G) Point (G) (G) Over Oper. Voltage & Temp. Range A3195x A3197x 40 to 200 40 to 200 -200 to -40 -200 to -40 >110 (Typ 220) >110 (Typ 230) Oper. Temp. Packages Comments E, L E, L U, LT U, LT active pulldown open-collector output 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. 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