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OCH168B
Micro Power Omnipolar Hall-effect Sensor Switch
General Description
The OCH168B Omnipolar Hall effect sensor IC is
fabricated from mixed signal CMOS technology. It is
comprised of two Hall plates and a OD output driver,
mainly designed for battery-operation, hand-held
equipment (such as Cellular and Cordless Phone,
PDA). The total power consumption in normal
operation is typically 24μW with a 3V power source.
Either north or 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 OCH168B is available in many flexible
packaging options, such as SIP-3L, TSOT23-3L.
Operating temperature range of the OCH168B is from
-40°C to 85°C.
To minimize the BOM cost, capacitors of the
MLCC type are supported, and only one external
component are needed to complete the application
circuit.
Features
Micro power consumption ideal for battery-powered
applications
Omnipolar (operation with magnetic field of either
north or south pole), easy to use as output switches with
both North and South pole
Input Voltage Range: 2.4V to 5.5V
Very High Sensitivity Hall Sensor
Chopper stabilized amplifier stage
Good RF noise immunity
Open Drain output
SIP-3LTSOT23-3L package
ESD (HBM) 4KV
Not need the push-high resistance
Applications
Cover switch in clam-shell cellular phones
Cover switch in Notebook PC/PDA
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
(1) SIP-3L (Top View)
OUTPU
T
GND
VDD
(2) TSOT23-3L (Top View)
3
GND
VDD
1
OUTPUT
2
Note: NC is “No Connection” which is recommended to be tied to ground.
Pin No.
Pin Name SIP-3L TSOT23-3L
Pin Function
VDD
GND
OUTPUT
1
2
3
1 Power Supply Input
3 Ground
2 Output Pin
N.C -
- Not Connected
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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
OCH168B
Micro Power Omnipolar Hall-effect Sensor Switch
Note: C is for power stabilization and to strengthen the noise immunity, the recommended capacitance is 10nF~100nF.
Ordering Information
Part Number Package Type Packing Qty BOP (Gauss) BRP(Gauss) Temperature Eco Plan Lead
OCH168BMD
SIP-3L
1000pcs/Box
±40(Typ.) ±30(Typ.) -40 ~ 85ROHS Cu
OCH168BTWAD TSOT23-3L 3000pcs/Reel
±40(Typ.) ±30(Typ.) -40 ~ 85ROHS Cu
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Ver. 1.1 Feb .27, 2018
源于灿瑞 磁传天下