US5782ESE - Melexis - Product.Network

US5782

Unipolar Hall Switch – Medium Sensitivity

3901005782 Page 1 of 10 Data Sheet

Rev 004 Apr/06

Features and Benefits

 Wide operating voltage range from 3.5V to 24V

 Medium sensitivity

 CMOS technology

 Chopper-stabilized amplifier stage

 Low current consumption

 Open drain output

 Thin SOT23 3L RoHS Compliant package

Application Examples

 Automotive, Consumer and Industrial

 Solid-state switch

 Interrupter

 Current detector

 Proximity detection

Ordering Information

Part No. Temperature Code Package Code

US5782 L (-40°C to 150°C) SE (TSOT-3L)

1 Functional Diagram

2 General Description

The Melexis US5782 is a unipolar Hall-effect

switch designed in mixed signal CMOS

technology.

The device integrates a voltage regulator, Hall

sensor with dynamic offset cancellation system,

Schmitt trigger and an open-drain output driver, all

in a single package.

Thanks to its wide operating voltage range and

temperature range, it is suitable for use in

automotive and solid state switch applications.

The device is delivered in a Thin Small Outline

Transistor (TSOT) 3-lead RoHS compliant

package.

US5782

Unipolar Hall Switch – Medium Sensitivity

3901005782 Page 2 of 10 Data Sheet

Rev 004 Apr/06

Table of Contents

1 Functional Diagram ........................................................................................................ 1

2 General Description........................................................................................................ 1

3 Glossary of Terms .......................................................................................................... 3

4 Absolute Maximum Ratings........................................................................................... 3

5 Pin Definitions and Descriptions................................................................................... 3

6 General Electrical Specifications .................................................................................. 4

7 Magnetic Specifications ................................................................................................. 4

8 Output Behaviour versus Magnetic Pole ...................................................................... 4

9 Detailed General Description......................................................................................... 5

10 Unique Features............................................................................................................ 5

11 Performance Graphs .................................................................................................... 6

12 Application Information................................................................................................ 7

12.1 Typical Three-Wire Application Circuit ....................................................................................................7

12.2 Two-Wire Circuit ......................................................................................................................................7

12.3 Automotive and Harsh, Noisy Environments Three-Wire Circuit ............................................................7

13 Application Comments................................................................................................. 7

14 Standard information regarding manufacturability of Melexis products with

different soldering processes........................................................................................... 8

15 ESD Precautions ........................................................................................................... 8

16 SE Package Information (TSOT-3L)............................................................................. 9

17 Disclaimer.................................................................................................................... 10

US5782

Unipolar Hall Switch – Medium Sensitivity

3901005782 Page 3 of 10 Data Sheet

Rev 004 Apr/06

3 Glossary of Terms

MilliTesla (mT), Gauss Units of magnetic flux density:

1mT = 10 Gauss

RoHS Restriction of Hazardous Substances

TSOT Thin Small Outline Transistor (TSOT package) – also referred with the Melexis

package code “SE”

ESD Electro-Static Discharge

BLDC Brush-Less Direct-Current

4 Absolute Maximum Ratings

Parameter Symbol Value Units

Supply Voltage V

28 V

Supply Current I

50 mA

Output Voltage V

OUT

28 V

Output Current I

OUT

50 mA

Operating Temperature Range T

-40 to 150

Storage Temperature Range T

-50 to 150

Maximum Junction Temperature T

165

Table 1: Absolute maximum ratings

Exceeding the absolute maximum ratings may cause permanent damage. Exposure to absolute-maximum-

rated conditions for extended periods may affect device reliability.

5 Pin Definitions and Descriptions

Pin № Name Type Function

1 VDD Supply Supply Voltage pin

2 OUT Output Open Drain Output pin

3 GND Ground Ground pin

Table 2: Pin definitions and descriptions

US5782

Unipolar Hall Switch – Medium Sensitivity

3901005782 Page 4 of 10 Data Sheet

Rev 004 Apr/06

6 General Electrical Specifications

DC Operating Parameters T

= 25

C, V

= 12V (unless otherwise specified)

Parameter Symbol Test Conditions Min Typ Max Units

Supply Voltage V

Operating 3.5 12 24 V

Supply Current I

B < B

0.5 2.5 5 mA

Output Saturation Voltage V

DSon

OUT

= 20mA, B > B

0.13 0.5 V

Output Leakage Current I

OFF

B < B

RP,

OUT

= 24V 0.01 10 µA

Output Rise Time t

= 1kΩ, C

= 20pF 0.25 µs

Output Fall Time t

= 1kΩ, C

= 20pF 0.25 µs

Maximum Switching Frequency F

10 KHz

Package Thermal Resistance R

Single layer (1S) Jedec board 301 °C/W

Table 3: Electrical specifications

7 Magnetic Specifications

DC Operating Parameters T

= 25

C, V

= 12V (unless otherwise specified)

Parameter Symbol Test Conditions Min Typ Max Units

Operating Point B

7 12 15 mT

Release Point B

3.5 7 10 mT

Hysteresis B

HYST

2 5 7 mT

Table 4: Magnetic specifications

8 Output Behaviour versus Magnetic Pole

DC Operating Parameters T

= -40

C to 150

C, V

= 3.5V to 24V (unless otherwise specified)

Parameter Test Conditions OUT

South pole B > B

Low

Null or weak magnetic field B  0 or B < B

High

North pole B > B

High

Table 5: Output behaviour versus magnetic pole

South pole

OUT = low (V

DSon

)

US5782

Unipolar Hall Switch – Medium Sensitivity

3901005782 Page 5 of 10 Data Sheet

Rev 004 Apr/06

9 Detailed General Description

Based on mixed signal CMOS technology, Melexis US5782 is a Hall-effect device with medium magnetic

sensitivity. Its sensitivity enables high accuracy in position sensing by the use of small air gap.

The chopper-stabilized amplifier uses switched capacitor technique to suppress the offset generally observed

with Hall sensors and amplifiers. The CMOS technology makes this advanced technique possible and

contributes to smaller chip size and lower current consumption than bipolar technology. The small chip size is

also an important factor to minimize the effect of physical stress.

This combination results in more stable magnetic characteristics and enables faster and more precise design.

The wide operating voltage from 3.5V to 24V, wide operating temperature according “L” specification and low

current consumption make this device especially suitable for automotive and solid state switch applications.

The output signal is open-drain type. Such output allows simple connectivity with TTL or CMOS logic by using

a pull-up resistor tied between a pull-up voltage and the device output.

10 Unique Features

The US5782 exhibits unipolar magnetic switching characteristics. Therefore, it operates only with one

magnetic pole.

Unipolar switch characteristic

The US5782 device is south pole active:

Applying a south magnetic pole greater than B

facing the

branded side of the package switches the output low.

Removing the magnetic field (B→0) switches the output high.

The use of the opposite magnetic pole facing the branded side

does not affect the output state.

A magnetic hysteresis B

HYST

keeps B

and B

separated by a minimal value. This hysteresis prevents

output oscillation near the switching point.

US5782

Unipolar Hall Switch – Medium Sensitivity

3901005782 Page 6 of 10 Data Sheet

Rev 004 Apr/06

11 Performance Graphs

11.1 Magnetic parameters vs. T

-40 -20 0 20 40 60 80 100 120 140

Ta (°C)

Magnetic field (mT)

Bop, VDD=3.5V

Bop, VDD=24V

Brp, VDD=3.5V

Brp, VDD=24V

11.2 Magnetic parameters vs. V

0 2 4 6 8 10 12 14 16 18 20 22 24

VDD (Volts)

Magnetic field (mT)

Bop, Ta=25°C

Bop, Ta=150°C

Brp, Ta=25°C

Brp, Ta=150°C

11.3 V

DSon

vs. T

0.1

0.2

0.3

0.4

0.5

-40 -20 0 20 40 60 80 100 120 140

Ta (°C)

VDSon (Volts)

VDD = 3.5V

VDD = 12V

VDD = 24V

11.4 V

DSon

vs. V

0.1

0.2

0.3

0.4

0.5

0 2 4 6 8 10 12 14 16 18 20 22 24

VDD (Volts)

VDSon (Volts)

Ta = -40°C

Ta = 25°C

Ta = 85°C

Ta = 150°C

11.5 I

vs. T

-40 -20 0 20 40 60 80 100 120 140

Ta (°C)

IDD (mA)

VDD = 3.5V

VDD = 12V

VDD = 24V

11.6 I

vs. V

0 2 4 6 8 10 12 14 16 18 20 22 24

VDD (Volts)

IDD (mA)

Ta = -40°C

Ta = 25°C

Ta = 85°C

Ta = 150°C

US5782

Unipolar Hall Switch – Medium Sensitivity

3901005782 Page 7 of 10 Data Sheet

Rev 004 Apr/06

12 Application Information

13 Application Comments

For proper operation, a 100nF bypass capacitor should be placed as close as possible to the device between

the V

and ground pin.

For reverse voltage protection, it is recommended to connect a resistor or a diode in series with the V

pin.

When using a resistor, three points are important:

- the resistor has to limit the reverse current to 50mA maximum (V

/ R1 ≤ 50mA)

- the resulting device supply voltage V

has to be higher than V

min (V

= V

– R1.I

)

- the resistor has to withstand the power dissipated in reverse voltage condition (P

= V

/ R1)

When using a diode, a reverse current cannot flow and the voltage drop is almost constant (≈0.7V).

Therefore, a 100Ω/0.25W resistor for 5V application and a diode for higher supply voltage are recommended.

Both solutions provide the required reverse voltage protection.

When a weak power supply is used or when the device is intended to be used in noisy environment, it is

recommended that figure 13.3 from the Application Information section is used.

The low-pass filter formed by R1 and C1 and the zener diode Z1 bypass the disturbances or voltage spikes

occurring on the device supply voltage V

. The diode D1 provides additional reverse voltage protection.

12.1 Typical Three-Wire Application Circuit

12.3 Automotive and Harsh, Noisy Environments

Three-Wire Circuit

12.2 Two-Wire Circuit

Note:

With this circuit, precise ON and OFF

currents can be detected using only

two connecting wires.

The resistors RL and Rb can be used

to bias the input current. Refer to the

part specifications for limiting values.

: I

OFF

= I

+ I

= V

+ I

: I

= I

OFF

+ I

OUT

= I

OFF

+ V

US5782

Unipolar Hall Switch – Medium Sensitivity

3901005782 Page 8 of 10 Data Sheet

Rev 004 Apr/06

14 Standard information regarding manufacturability of Melexis

products with different soldering processes

Our products are classified and qualified regarding soldering technology, solderability and moisture sensitivity

level according to following test methods:

Reflow Soldering SMD’s (Surface Mount Devices)

• IPC/JEDEC J-STD-020

Moisture/Reflow Sensitivity Classification for Nonhermetic Solid State Surface Mount Devices

(classification reflow profiles according to table 5-2)

• EIA/JEDEC JESD22-A113

Preconditioning of Nonhermetic Surface Mount Devices Prior to Reliability Testing

(reflow profiles according to table 2)

Wave Soldering SMD’s (Surface Mount Devices) and THD’s (Through Hole Devices)

• EN60749-20

Resistance of plastic- encapsulated SMD’s to combined effect of moisture and soldering heat

• EIA/JEDEC JESD22-B106 and EN60749-15

Resistance to soldering temperature for through-hole mounted devices

Iron Soldering THD’s (Through Hole Devices)

• EN60749-15

Resistance to soldering temperature for through-hole mounted devices

Solderability SMD’s (Surface Mount Devices) and THD’s (Through Hole Devices)

• EIA/JEDEC JESD22-B102 and EN60749-21

Solderability

For all soldering technologies deviating from above mentioned standard conditions (regarding peak

temperature, temperature gradient, temperature profile etc) additional classification and qualification tests

have to be agreed upon with Melexis.

The application of Wave Soldering for SMD’s is allowed only after consulting Melexis regarding assurance of

adhesive strength between device and board.

Melexis is contributing to global environmental conservation by promoting lead free solutions. For more

information on qualifications of RoHS compliant products (RoHS = European directive on the Restriction Of

the use of certain Hazardous Substances) please visit the quality page on our website:

http://www.melexis.com/quality.asp

15 ESD Precautions

Electronic semiconductor products are sensitive to Electro Static Discharge (ESD).

Always observe Electro Static Discharge control procedures whenever handling semiconductor products.

US5782

Unipolar Hall Switch – Medium Sensitivity

3901005782 Page 9 of 10 Data Sheet

Rev 004 Apr/06

16 SE Package Information (TSOT-3L)

1.90 BSC

2.90 BSC

0.30

0.45

0.95 BSC

0.127+0.023

- 0.007

0.15

0.20

see note 3

0.20

0.891+/-0.05

US5782

Unipolar Hall Switch – Medium Sensitivity

3901005782 Page 10 of 10 Data Sheet

Rev 004 Apr/06

17 Disclaimer

Devices sold by Melexis are covered by the warranty and patent indemnification provisions appearing in its

Term of Sale. Melexis makes no warranty, express, statutory, implied, or by description regarding the

information set forth herein or regarding the freedom of the described devices from patent infringement.

Melexis reserves the right to change specifications and prices at any time and without notice. Therefore, prior

to designing this product into a system, it is necessary to check with Melexis for current information. This

product is intended for use in normal commercial applications. Applications requiring extended temperature

range, unusual environmental requirements, or high reliability applications, such as military, medical life-

support or life-sustaining equipment are specifically not recommended without additional processing by

Melexis for each application.

The information furnished by Melexis is believed to be correct and accurate. However, Melexis shall not be

liable to recipient or any third party for any damages, including but not limited to personal injury, property

damage, loss of profits, loss of use, interrupt of business or indirect, special incidental or consequential

damages, of any kind, in connection with or arising out of the furnishing, performance or use of the technical

data herein. No obligation or liability to recipient or any third party shall arise or flow out of Melexis’ rendering

of technical or other services.

For the latest version of this document, go to our website at

www.melexis.com

Or for additional information contact Melexis Direct:

Europe, Africa, Asia: America:

Phone: +32 1367 0495 Phone: +1 603 223 2362

E-mail: sales_europe@melexis.com E-mail: sales_usa@melexis.com

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