SS149EUA [SECELECTRONICS]

Unipolar Hall Switch-Low Sensitivity; 单极霍尔开关 - 低灵敏度


型号：	SS149EUA
厂家：	SEC Electronics Inc.
描述：	Unipolar Hall Switch-Low Sensitivity 单极霍尔开关 - 低灵敏度开关
文件：	总5页 (文件大小：222K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

SS149

Unipolar Hall Switch-Low Sensitivity

Packages

Features and Benefits

–

3.5V to 24V Operation

-40℃ to 150℃ Superior temperature operation

CMOS technology

Low current consumption

Chopper-stabilized amplifier stage

Open drain output

Low sensitivity

Small Size-SOT23 3L or SIP 3L

3 pin SOT23 (suffix SO)

3 pin SIP (suffix UA)

both RoHS compliant packages

Functional Block Diagram

Application Examples

–

Automotive, Consumer and Industrial

Solid-state switch

Brushless DC motor commutation

Speed detection

Angular position detection

Proximity detection

Current detector

VDD

Voltage

Regulator

OUT

Chopper

Hall

Plate

General Description

GND

The SS149 is a unipolar Hall-effect sensor IC fabricated

from CMOS technology. The device integrates a voltage

regulator, Hall sensor with dynamic offset cancellation

system, small signal amplifier, Schmitt trigger and an

open-drain output driver. With suitable output pull up,

they can be used with bipolar or CMOS logic circuits.

SIP Package

Pin 1 – V_DD

Pin 2 – GND

Pin 3 – OUT

SOT Package

Pin 1 – V_DD

Pin 2 – OUT

Pin 3 – GND

These Hall-effect switches are monolithic integrated circuits with tighter magnetic specifications, designed to operate

continuously over extended temperatures to +150℃, and are more stable with both temperature and supply voltage

changes. The unipolar switching characteristic makes these devices ideal for use with a simple bar or rod magnet.

Thanks to its wide operating voltage range and extended choice of temperature range, it is quite suitable for use in

automotive, industrial and consumer applications.

The device is delivered in a Small Outline Transistor (SOT) and in a Plastic Single In Line ( SIP 3L flat). Both 3-lead

packages are RoHS compliant.

V2.10 May 1, 2012

SS149

Unipolar Hall Switch-Low Sensitivity

Glossary of Terms

MilliTesla (mT), Gauss

RoHS

Units of magnetic flux density: 1mT = 10 Gauss

Restriction of Hazardous Substances

Operating Point (B_OP

)

Magnetic flux density applied on the branded side of the package which turns the output

driver ON (V_OUT= V_DSon

)

Release Point (B_RP

)

Magnetic flux density applied on the branded side of the package which turns the output

driver OFF (V_OUT= high)

Pin Definitions and Descriptions

SOT Pin № SIP Pin №

Name

Type

Function

VDD

OUT

GND

Supply

Output

Ground

Supply Voltage pin

Open Drain Output pin

Ground pin

Table 1: Pin definitions and descriptions

Absolute Maximum Ratings

Parameter

Symbol

V_DD

I_DD

Value

Units

Supply Voltage

Supply Current

Output Voltage

Output Current

V_OUT

I_OUT

T_S

°C

Storage Temperature Range

-65 to 170

Table 2: Absolute maximum ratings

Operating Temperature Range Symbol

Value

Units

Temperature Suffix “E”

Temperature Suffix “K”

Temperature Suffix “L”

T_A

-40 to 85

-40 to 125

-40 to 150

°C

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

conditions for extended periods may affect device reliability.

V2.10 May 1, 2012

SS149

Unipolar Hall Switch-Low Sensitivity

General Electrical Specifications

DC Operating Parameters T_A= 25℃, V_DD= 3.5V to 24V (unless otherwise specified)

Parameter

Symbol

Test Conditions

Min

Typ

Max Units

Supply Voltage

Supply Current

V_DD

I_DD

Operating

3.5

1.5

B < B_RP

2.5

0.4

Output Saturation Voltage V_DSon

I_OUT= 20mA, B > B_OP

B < B_RPV_OUT= 24V

R_L= 1kΩ, C_L= 20pF

0.5

Output Leakage Current

Output Rise Time

I_OFF

t_r

0.01

0.25

µA

µs

Output Fall Time

t_f

µs

Table 3: Electrical Specifications

Magnetic Specifications

DC Operating Parameters V_DD= 3.5V to 24V (unless otherwise specified)

SS149

Parameter

Symbol

Test Conditions

Min

Typ

Max Units

Operating Point

Release Point

Hysteresis

B_OP

120

150

140

B_RP

Ta=25℃,V_DD=12V DC

B_HYST

Table 4: Magnetic Specifications

Application Information

Typical Three-Wire Application Circuit

Automotive and Harsh, Noisy Environments Three-Wire Circuit

V2.10 May 1, 2012

SS149

Unipolar Hall Switch-Low Sensitivity

Application Comments

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

and ground pin.

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

When using a resistor, three points are important:

- the resistor has to limit the reverse current to 50mA maximum (V_CC/ R1  50mA)

- the resulting device supply voltage V_DDhas to be higher than V_DDmin (V_DD= V_CC– R1.I_DD

)

- the resistor has to withstand the power dissipated in reverse voltage condition (P_D= V_CC²/ R1)

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

Therefore, a 100 ꢀ/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_DD. The diode D1 provides additional reverse voltage protection.

ESD Precautions

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

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

Package Information

Package SE, 3-Pin SOT-23:

V2.10 May 1, 2012

SS149

Unipolar Hall Switch-Low Sensitivity

Package UA, 3-Pin SIP:

Ordering Information

Part No.

Pb-free

YES

Temperature Code

-40°C to 85°C

-40°C to 125°C

-40°C to 150°C

Package Code

SOT-23

TO-92

Packing

SS149ESOT

SS149EUA

SS149KSOT

SS149KUA

SS149LSOT

7-in. reel, 3000 pieces/reel

Bulk, 1000 pieces/bag

7-in. reel, 3000 pieces/reel

Bulk, 1000 pieces/bag

7-in. reel, 3000 pieces/reel

SOT-23

TO-92

SOT-23

SS149LUA

YES

-40°C to 150°C

TO-92

Bulk, 1000 pieces/bag

V2.10 May 1, 2012

相关型号：