OH9248-T [OHHALLSENSOR]

High Sensitivity Micropower Omnipolar Hall-Effect Switch; 高灵敏度微功耗全极霍尔效应开关


型号：	OH9248-T
厂家：	Nanjing Ouzhuo Technology Co., Ltd.
描述：	High Sensitivity Micropower Omnipolar Hall-Effect Switch 高灵敏度微功耗全极霍尔效应开关开关
文件：	总5页 (文件大小：227K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

OH9248

High Sensitivity Micropower Omnipolar Hall-Effect Switch

Order Information

Part Number

OH9248-T

OH9248-S

Package Temperature Range

Marking ID

9248

Packing Type

Bulk

TO-92S

SOT23

-40 to 85°C

GL1

Tape & Reel

General Description: The OH9248 is an ultra-sensitive Hall-effect switch with

digital latched output, mainly designed for battery-operation, hand-held

equipments. Special CMOS process is used for low-voltage and low-power

requirement. A chopper stabilized amplifier improves stability of magnetic switch

points. A sleep-awake logic controls the IC in sleep time or awake time. This function will

reduce the average operating current of the IC. During the awake time, the output is

changed with the magnetic flux density. During the sleep time, the output is latched in its

previous state and the current consumption will reduce to some μA. The IC switching

behaviour is omnipolar, either north or south pole sufficient strength will turn the output on.

If the magnetic flux density is larger than operating point (BOP), the output will be turned

on; if it is less than releasing point (BRP), the output will be turned off.

Features

Applications

• Micropower Operation

• Cover Switch in Notebook PC/PDA

• 2.5 to 5.5V Power Supply

• Handheld Wireless Application Awake Switch

• Switching for Both Poles of a Magnet (Omnipolar)

• Magnet Switch in Low Duty Cycle

• Stabilized Chopper

Applications

• Superior Temperature Stability

• Digital Output Signal

Absolute Maximum Ratings （T_A=25℃）

Supply Voltage VCC_{··············}7 V

Functional Block Diagram

Supply Current (Fault) ICC _{··············}6 mA

Output Voltage VOUT _{··············}7 V

Output Current IOUT _{··············}2 mA

Magnetic Flux Density B _{·············}Unlimited

Storage Temperature _{·············}-55 to 150 °C

Junction Temperature _{············}150 °C

ESD (Machine Model) _{············}ESD 200 V

NOTE：Electronic semiconductor products are

sensitive to Electro Static Discharge (ESD).

Always observe Electro Static Discharge

control procedures whenever handling

semiconductor products.

Page 1

www.ohhall.com

Nanjing Ouzhuo Technology co., Ltd

www.zbling.com

Tel：86-25-52312738，86-25-83247886 FAX: 86-25-52312738

E-mail: ohhall@163.com

OH9248

High Sensitivity Micropower Omnipolar Hall-Effect Switch

Electrical Characteristics

Vcc =3V, TA=25°C, unless otherwise specified

Value

Parameter

Symbol

Conditions

Unit

Min Typ Max

Supply Voltage

V_CC

IAW

ISL

2.5

5.5

μA

Awake

Sleep

Supply Current

1.0

0.4

IAVG

IOUT

I_LEAK

VSAT

tAW

tSL

Average

μA

Output Current

Output Leakage Current

Saturation Voltage

Awake Mode Time

Sleep Mode Time

Duty Cycle

B<︱BRP︱

IOUT =1.0mA

OPERATING

<0.1

μA

μs

150

120

0.15

Chopper Frequency

kHz

Magnetic Characteristics

Vcc =3V, TA=25°C, (1mT = 10 Gauss)

Value

Typ

Parameter

symbol

B_OPS

Conditions

Unit

Min

Max

South pole to branded side

B>BOPS,VOUT=low(output on)

North pole to branded side

B>BOPN,VOUT=low(output on)

South pole to branded side

B<BRPS,VOUT=high(output off)

North pole to branded side

B<BRPN,VOUT=high(output off)

-30

Operate Point

B_OPN

-55

B_RPS

Release Point

Hysteresis

B_RPN

B_H

-20

-5

︱BOPX - BRPX︱

BOPX=operating point(output turns on);

BRPX=releasing point(output turns off)

Output Voltage vs. Magnetic Flux Density

Page 2

www.ohhall.com

Tel：86-25-52312738，86-25-83247886 FAX: 86-25-52312738

Nanjing Ouzhuo Technology co., Ltd

www.zbling.com

E-mail: ohhall@163.com

OH9248

High Sensitivity Micropower Omnipolar Hall-Effect Switch

Typical Application

：

Mechanical Dimension unit:mm(inch)

Page 3

Nanjing Ouzhuo Technology co., Ltd

www.ohhall.com

www.zbling.com

Tel：86-25-52312738，86-25-83247886 FAX: 86-25-52312738

E-mail: ohhall@163.com

OH9248

High Sensitivity Micropower Omnipolar Hall-Effect Switch

SOT23

Page 4

Nanjing Ouzhuo Technology co., Ltd

www.ohhall.com

www.zbling.com

Tel：86-25-52312738，86-25-83247886 FAX: 86-25-52312738

E-mail: ohhall@163.com

OH9248

High Sensitivity Micropower Omnipolar Hall-Effect Switch

TO-92S

Page 5

Nanjing Ouzhuo Technology co., Ltd

www.ohhall.com

www.zbling.com

Tel：86-25-52312738，86-25-83247886 FAX: 86-25-52312738

E-mail: ohhall@163.com

相关型号：