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					MH 181 Single Output Hall Sensor Latch

MH 181, Hall-Effect sensor, designed for electronic commutation of brush-less DC motor applications. The device includes an on-chip Hall voltage generator for magnetic sensing, a comparator that amplifies the Hall Voltage, and a Schmitt trigger to provide switching hysteresis for noise rejection, and open collector output. An internal band gap regulator is used to provide temperature compensated supply voltage for internal circuits and allows a wide operating supply range. The device is identical except for magnetic switch points. The device includes on a single silicon chip a voltage regulator, Hall-voltage generator, small-signal amplifier, chopper stabilization, Schmitt trigger, and short-circuit protected open-collector output to sink up to 25mA. A south pole of sufficient strength will turn the output on. The North Pole is necessary to turn the output off. An on-board regulator permits operation with supply voltages of 3.5V to 20 V. The package type is in a lead (Pb)-free version was verified by third party organization.

Features and Benefits
Resistant to Physical Stress. Temperature compensation. Wide operating voltage range. High Quality and Low Cost. Open-Collector pre-driver. Reverse bias protection on power supply pin. Small Size. 100% at 125℃ “Hot Test” in MH 181 KUA

Applications
High temperature Hall IC application Fan motor application BLDC motor application Speed sensing Position sensing Current sensing Revolution counting 3 phase BLDC motor in “K” Spec

Ordering Information XX-XXX X XX-X-XX XX-X
Lead Free

Company Name and Product Category
MH:MST Hall Effect/MP:MST Power MOSFET

Part number Handling Code
181,182,183,184,185,248,249…

Temperature range Package Identification
E: 85 Degree C, K: 125 Degree C, L: 150 Degree C

Package type
Sorting Code
UA:TO-92S,SO:SOT-23,ST:Tsot-25,SU:USON

Sorting Package type
α,β,Blank….. β

Package Identification Code Temperature code
01,02,03…..

Handling Code Part number
BLANK: ESD bag, TR: Tape & Reel

Lead Free Code Company Name and Product Category
BLANK: Lead Free Device ,G: Green

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MH 181 Single Output Hall Sensor Latch

Part No. 181

Temperature Suffix K (-20℃ to + 125℃) ℃ ℃ E (-20℃ to + 85℃) ℃ ℃

Package Type UA ( TO-92S) UA ( TO-92S)

Package Identification 01/02 01/02

MH 181KUA is developed as “125 degree C Temperature Version” by MST technology. Major application is industrial and automotive.

Functional Diagram

Absolute Maximum Ratings At (Ta=25℃)
Supply Voltage, Vcc Output Output Current, Iout Operating Temperature Range, TA “K” version Storage Temperature, Ts Magnetic Flux Density 20V 30V 25mA -20℃ to 125℃ -55℃ to 150℃ No limit

Electrical Specifications
DC Operating Parameters TA=+25℃, VDD=12V (Unless otherwise specified) Parameters Supply Voltage Supply Current Output Saturation Voltage Output Leakage Current Output Rise Time Output Fall Time B<Brp Iout=10mA Vout=12V RL=820 ohm; CL=20pF RL=820 ohm; CL=20pF Test Conditions Min 3.5 Typ Max 20.0 8.0 700.0 10.0 1.5 1.5 Units Volts mA mV µA µS µS

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Magnetic Specifications
DC Operating Parameters Parameter Operate Point Release Point Hysteresis Symbol Bop Brp Hys Test condition Min 5 -90 100 TA=25℃, VSUPPLY=12V Typ Max 90 -5 Unit Gauss Gauss Gauss

Performance Graphs
Bop & Brp-Supply Voltage
60 40

5 4 3 2 1

Icc-Supply Voltage

Bop & Brp(Gauss)

Icc(mA)

20 0 -20 -40 -60 0 5 10 15 20 25

Icc-25℃ Icc-125℃

Bop-25℃ Brp-25℃

Bop-125℃ Brp-125℃

0 0 5 10 15 20 25

Supply Voltage(V)
BH-Supply Votage 120
25

Supply Voltage(V)
Output Voltage versus flux density

Vout off
20

Output Voltage(V)

BH(Gauss)

15

100 BH-25℃ BH-125℃

Brp
10

Bop
5

Vsat

Vout on 50 75 100

80 0 5 10 15 20 25 Supply Voltage(V) 30

0

-100 -75 -50 -25

0

25

Flux Density(Gauss)

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MH 181 Single Output Hall Sensor Latch

Wave Soldering Parameters
280
500

U Package Information

Solder Temperature(℃)

260

400

240

Package power
0 5 10 15 20 25 30

300

220

200

200

100

180

0 -40 0 40 80 120 160 200

Time Wave Solder(Sec)

Temperature(℃)

Sensor Location, package dimension and marking
MH 181 UA-01 Package

NOTES: 1).Controlling dimension: mm 2).Leads must be free of flash and plating voids 3).Do not bend leads within 1 mm of lead to package interface 4).PINOUT: Pin 1 Pin 2 Pin 3 VDD GND Output Sensor Location Active Area Depth

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MH 181 Single Output Hall Sensor Latch

MH 181 UA-02 Package

NOTES: 1).Controlling dimension: mm 2).Leads must be free of flash and plating voids 3).Do not bend leads within 1 mm of lead to package interface 4).PINOUT: Pin 1 Pin 2 Pin 3 VDD GND Output Active Area Depth

Sensor Location

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