Allegro UGS3133UA, UGS3132UA, UGL3133LT, UGL3132LT, UGN3133U Datasheet

Data Sheet

3132

AND

27631.2B

3133

ULTRA-SENSITIVE BIPOLAR

HALL-EFFECT SWITCHES

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

X

V

CC

1

32

their use with multi-pole ring magnets over relatively large distances.

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 SOT-89/TO­243AA transistor package for surface-mount applications; suffixes ‘U’,
and ‘UA’ feature 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.

SUPPLY

Pinning is shown viewed from branded side.

ABSOLUTE MAXIMUM RATINGS

Supply Voltage, VCC. . . . . . . . . . . . . 25 V

Reverse Battery Voltage, V

Magnetic Flux Density, B . . . . Unlimited

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

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

GROUND

Dwg. PH-003A

OUT

OUTPUT

. . . . -35 V

RCC

. . . . . . . . 25 V

. 25 mA

OUT

A

FEATURES

■ 4.5 V to 24 V Operation

■ Reverse Battery Protection

■ Superior Temperature Stability

■ Superior Supply Voltage Stability

■ 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

1

REG.

FUNCTIONAL BLOCK DIAGRAM

V

CC

X

3

OUTPUT

2

GROUND

Dwg. FH-005-2

ELECTRICAL CHARACTERISTICS at TA = +25°C

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)

CC

OFF

CC

r

f

Operating 4.5 — 24 V

I

= 20 mA, B ≥ B

OUT

V

= 24 V, B ≤ B

OUT

VCC = 24 V, B ≤ B

VCC = 12 V, RL = 820 Ω, CL = 20 pF — 0.04 2.0 µs

VCC = 12 V, RL = 820 Ω, CL = 20 pF — 0.18 2.0 µs

OP

RP

RP

— 145 400 mV

— <1.0 10 µA

— 4.3 9.0 mA

MAGNETIC CHARACTERISTICS over operating temperature and voltage range.

Limits

Characteristic Symbol Device Type* Min. Typ. Max. Units

Operate Point B

Release Point B

OP

RP

3132 — 32 95 G

3133 — 32 75 G

3132 -95 -20 — G

3133 -75 -20 — G

Hysteresis B

NOTE: As used here, negative flux densities are defined as less than zero (algebraic convention.)

Typical values are at TA = +25°C and V

* Complete part number includes a prefix denoting operating temperature range (UGL, UGN, or UGS)

and a suffix denoting package type (LT, U, or UA).

CC

hys

= 12 V.

Both 30 52 — G

115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 [phone]
Copyright © 1996,1999, Allegro MicroSystems, Inc.

HALL-EFFECT SWITCHES

TYPICAL CHARACTERISTICS

3132

AND

3133

BIPOLAR

40

20

0

RELEASE POINT

-20

SWITCH POINT IN GAUSS

-40

-50

-25

AMBIENT TEMPERATURE IN °C

200

I = 20 mA

OUT

175

OPERATE POINT

0 25 50 75

V = 12 V

CC

I = 20 mA

OUT

100

Dwg. GH-022

125

40

OPERATE POINT

20

0

-20

SWITCH POINT IN GAUSS

-40

4.0

RELEASE POINT

8.0

SUPPLY VOLTAGE IN VOLTS

6.0

5.0

12 16 20

B ≥ B

OP

T = 25°C

A

I = 20 mA

OUT

24

Dwg. GH-021

V = 12 V

CC

28

150

125

SATURATION VOLTAGE IN mV

100

-50

-25

0 25 50 75

AMBIENT TEMPERATURE IN °C

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100

Dwg. GH-024

125

4.0

SUPPLY CURRENT IN mA

3.0

-50

-25

AMBIENT TEMPERATURE IN °C

0 25 50 75

B ≤ B

RP

100

Dwg. GH-023

125