Datasheet 3175 Datasheet (ALLEGRO)

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Data Sheet

3175

AND

27609.4A

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.

SUPPLY

Pinning is shown viewed from branded side.

ABSOLUTE MAXIMUM RATINGS

Supply Voltage, VCC. . . . . . . . . . . . . 18 V

Reverse Battery Voltage, V

Magnetic Flux Density, B . . . . Unlimited

Output OFF Voltage, V Continuous Output Current, I Operating Temperature Range,

TA. . . . . . . . . . . . . . . -20°C to +85°C

Storage Temperature Range,

TS. . . . . . . . . . . . . . . -65°C to +150°C

GROUND

Dwg. PH-003A

OUT

OUTPUT

. . . . -18 V

RCC

. . . . . . . . 18 V

. 15 mA

OUT

FEATURES

■ Symmetrical Response

■ 4.5 V to 18 V Operation

■ Open-Collector Output

■ Reverse Battery Protection

■ Activate With Small, Commercially Available Permanent Magnets

■ Solid-State Reliability

■ Small Size

■ Superior Temperature Stability

■ Resistant to Physical Stress

Always order by complete part number, e.g., UGN3175LT .

See Magnetic Characteristics table for differences between devices.

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HALL-EFFECT LATCHES

REG.

FUNCTIONAL BLOCK DIAGRAM

OUTPUT

GROUND

Dwg. FH-005-2

ELECTRICAL CHARACTERISTICS at TA = +25°C, VCC = 4.5 V to 18 V (unless otherwise noted).

Limits

Characteristic Symbol Test Conditions Min. Typ. Max. Units

Supply Voltage V

Output Saturation Voltage V

Output Leakage Current I

Supply Current I

Output Rise Time t

Output Fall Time t

OUT(SAT)

OFF

Operating 4.5 — 18 V

VCC = 18 V, I

= 18 V, B < B

OUT

VCC = 4.5 V, B < BRP (Output OFF) — 5.0 10 mA

VCC = 12 V, RL = 1.1 kΩ, CL = 20 pF — 0.04 2.0 µs

VCC = 12 V, RL = 1.1 kΩ, CL = 20 pF — 0.18 2.0 µs

= 10 mA, B > B

OUT

— 200 300 mV

— 0.05 5.0 µA

MAGNETIC CHARACTERISTICS in gauss; VCC = 4.5 V to 18 V.

Part

Characteristic Min. Typ. Max. Min. Typ. Max.

Operate Point, B

Release Point, B

Hysteresis, B

hys

Number*

UGN3175 25 — 170 15 — 180

UGN3177 50 — 150 25 — 150

UGN3175 -170 — -25 -180 — -15

UGN3177 -150 — -50 -150 — -25

UGN3175 100 200 — 80 180 —

UGN3177 100 200 — 50 180 —

TA = +25°CT

= -20°C to +85°C

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).

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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

1 32

Suffix “U”

ACTIVE AREA DEPTH

0.015"

0.38 mm NOM

0.092"

2.35 mm

0.045"

1.15 mm

Dwg. MH-008-1B

0.072"

1.83 mm

TYPICAL OPERATING CHARACTERISTICS

200

100

-100

SWITCH POINT IN GAUSS

-200

-30

OPERATE POINT

RELEASE POINT

-10 10 30 50

AMBIENT TEMPERATURE IN °C

V = 14 V

Dwg. GH-020

BRANDED SURFACE

Suffix “UA”

ACTIVE AREA DEPTH

0.018"

0.46 mm NOM

BRANDED SURFACE

1 32

Dwg. MH-002-3B

0.083"

2.12 mm

0.055"

1.39 mm

Dwg. MH-011B

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HALL-EFFECT LATCHES

PACKAGE DESIGNATOR ‘LT’

Dimensions in Inches

(for reference only)

0.155

0.167

0.035

0.047

0.059

BSC

0.173

0.181

0.064

0.072

0.090

0.118

BSC

0.102

0.014

0.019

0.017

0.022

Dimensions in Millimeters

(controlling dimensions)

4.40

4.60

1.62

1.83

0.055

0.063

0.014

0.017

0.084

0.090

Dwg. MA-009-3 in

1.40

1.60

0.35

0.44

3.94

4.25

0.89

1.20

1.50

BSC

2.29

3.00

BSC

115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000

2.60

0.36

0.48

0.44

0.56

2.13

2.29

Dwg. MA-009-3 mm

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Dimensions in Inches Dimensions in Millimeters

(controlling dimensions) (for reference only)

PACKAGE DESIGNATOR ‘U’

SEE NOTE

0.181

0.176

0.600

0.560

0.086

MAX

0.183

0.178

1 2 3

0.050

0.100

0.063

0.059

0.016

45°

0.018

0.015

Dwg. MH-003D in

SEE NOTE

4.60

4.47

15.24

14.23

2.18

MAX

4.65

4.52

1 2 3

1.27

2.54

1.60

1.50

45°

0.46

0.38

0.41

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).

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3175

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HALL-EFFECT LATCHES

Dimensions in Inches Dimensions in Millimeters

(controlling dimensions) (for reference only)

PACKAGE DESIGNATOR ‘UA’

SEE NOTE

45°

0.122

0.117

0.640

0.600

0.164

0.159

0.085

123

MAX

0.050

BSC

0.062

0.058

0.031

0.016

0.015

Dwg. MH-014D in

45°

SEE NOTE

45°

3.10

2.97

16.26

15.24

4.17

4.04

2.16

123

MAX

1.27

BSC

1.57

1.47

45°

0.79

0.38

0.41

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

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HALL-EFFECT LATCHES

HALL-EFFECT SENSORS SELECTION GUIDE

Partial Part Avail. Oper. Characteristics at TA = +25°C Number Temp. B

HALL-EFFECT UNIPOLAR SWITCHES in order of B

3240 E/L +50 +5.0 10 chopper stabilized 1 3210 E ±70 ± 5.0 7.7 micropower, chopper stabilized 3361 E +120 +50 5.0* 2-wire, chopper stabilized 3362 E +120 +50 5.0* 2-wire, chopper stabilized 3161 E +160 +30 20 2-wire 3141 E/L +160 +10 55 3235 S +175 +25 15* output 1 2

5140 E +200 +50 55 300 mA output 1, 3 3142 E/L +230 +75 55 3143 E/L +340 +165 55 3144 E/L +350 +50 55 3122 E/L +400 +140 105 3123 E/L +440 +180 105 3121 E/L +450 +125 105 3150 J +40 to +850 – 20

OP(max)BRP(min)

-25 -175 15* output 2 2

hys(typ)

Features Notes

and B

programmable, chopper stabilized

hys

HALL-EFFECT LATCHES & BIPOLAR SWITCHES† in order of B

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.

and B

hys

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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