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OCH1501
Micro Power Unipolar Hall-effect Sensor Switch
General Description
The OCH1501 Unipolar Hall effect sensor IC is
fabricated from mixed signal CMOS technology. It is
comprised of one Hall plate and a CMOS output driver,
mainly designed for battery-operation, hand-held
equipment (such as Cellular and Cordless Phone,
PAD). The total power consumption in normal
operation is typically 28μW with a 2.8V power source.
South poles of sufficient strength will turn the output
on. The output will be turned off under no magnetic
field. While the magnetic flux density (B) is larger than
operating point (BOP), the output will be turned on
(low), the output is held until B is lower than release
point (BRP), and then turned off.
The OCH1501 is available in TSOT23-3L
Package. Operating temperature range of the
OCH1501 is from -40°C to 85°C.
To minimize the BOM cost, capacitors of the
MLCC type are supported, and only one external
component is needed to complete the application
circuit.
Features
Micro power consumption ideal for
battery-powered applications
Input Voltage Range: 2.2V to 4.5V
Very High Sensitivity Hall Sensor
Chopper stabilized amplifier stage
Good RF noise immunity
Open Drain Output
TSOT23-3L package
Need the push-high resistance
Applications
Cover switch in clam-shell cellular phones
Cover switch in Notebook PC/PAD
Contact-less switch in consumer products
Solid State Switch
Handheld Wireless Handset Awake Switch
Lid close sensor for battery-powered devise
Magnet proximity sensor for reed switch
replacement in low duty cycle applications
Pin Configuration
TSOT23-3L (Top View)
Pin Name
VDD
GND
OUTPUT
Pin No.
TSOT23-3L
1
3
2
Pin Function
Power Supply Input
Ground
Output Pin
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Ver.1.1 Feb .27, 2018
源于灿瑞 磁传天下

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Typical Application Circuit
OCH1501
Micro Power Unipolar Hall-effect Sensor Switch
Note: C is for power stabilization and to strengthen the noise immunity, the recommended capacitance is 0.47uF.
Ordering Information
OCH1501 X X X
Part Number
OCH1501TWAD
Package:
TW:TSOT23-3L
Packing:
Blank: Bulk or Box
A:Tape&Reel
Temperature Grade:
D: -40~+85
Package Type
TSOT23-3L
Packing Qty
7-in reel
3000pcs/reel
BOPS
(Gauss)
12 ~ 34
BRPS
(Gauss)
8 ~ 30
Temperature
-4085
Eco
Plan
Green
Lead
Cu
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Ver.1.1 Feb .27, 2018
源于灿瑞 磁传天下