OH9248
High Sensitivity Micropower Omnipolar Hall-Effect Switch
Order Information
Part Number
OH9248-T
OH9248-S
Package
TO-92S
SOT23
Temperature Range
-40 to 85°C
-40 to 85°C
Marking ID
9248
GL1
Packing Type
Bulk
Tape & Reel
General Description
:
The OH9248 is an ultra-sensitive Hall-effect switch with
Description:
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
• Micropower Operation
• 2.5 to 5.5V Power Supply
• Switching for Both Poles of a Magnet (Omnipolar)
• Stabilized Chopper
• Superior Temperature Stability
• Digital Output Signal
Absolute Maximum Ratings
（T
A
=25℃）
Supply Voltage V
CC
··············
7 V
Supply Current (Fault) I
CC
··············
6 mA
Output Voltage V
OUT
··············
7 V
Output Current I
OUT
··············
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.
Nanjing Ouzhuo Technology co., Ltd
Tel：86-25-52312738，86-25-83247886
Page 1
www.ohhall.com
FAX: 86-25-52312738
www.zbling.com
E-mail: ohhall@163.com
Applications
• Cover Switch in Notebook PC/PDA
• Handheld Wireless Application Awake Switch
• Magnet Switch in Low Duty Cycle
Applications
Functional Block Diagram
OHHALLSENSOR [ Nanjing Ouzhuo Technology Co., Ltd. ]
