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OCH170
MicroPower Ultra-Sensitive Hall-effect Switch
General Description
The OCH170 Ultra-Sensitive Hall effect switch is
fabricated from mixed signal CMOS technology.
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 off. The output will be turned on under
no magnetic field. While the magnetic flux density (B)
is larger than operating point (BOP), the output will be
turned off (high), the output is held until B is lower
than release point (BRP), and then turned on(low).
The OCH170 is available in many flexible
packaging options, such as SIP-3L, TSOT23-3L, and
DFN2020-6L. Operating temperature range of the
OCH170 is from -40°C to 85°C.
Features
Micropower 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
SIP-3L/TSOT23-3L/Low profile DFN2020-6L
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)
(2) TSOT23-3L (Top View)
(3) DFN2020_6L (Top View)
Note: NC is “No Connection” which is recommended to be tied to ground.
Pin Name
VDD
GND
OUTPUT
N.C
SIP-3L
1
2
3
-
Pin No.
TSOT23-3L
1
3
2
-
DFN2020-6L
1
5
3
2,4,6
Pin Function
Power Supply Input
Ground
Output Pin
Not Connected
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Ver. 1.3 Feb .27, 2018
源于灿瑞 磁传天下

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Typical Application Circuit
OCH170
MicroPower Ultra-Sensitive Hall-effect Switch
Part Number
OCH170MD
Package Type
SIP-3L
OCH170TWAD TSOT23-3L
OCH170VAD DFN2020-6L
Package Qty
Bulk
1000pcs/bag
7-in reel
3000pcs/reel
7-in reel
3000pcs/reel
Brp
(Gauss)
±10 ~ ±50
Bop
(Gauss)
±20 ~ ±60
Temperature
-4085
Eco
Plan
ROHS
Lead/Ball
Finish
Cu Sn
±10 ~ ±50 ±20 ~ ±60 -4085
±10 ~ ±50 ±20 ~ ±60 -4085
Green
Green
Cu Sn
Cu
NIPDAU
Note: C is for power stabilization and to strengthen the noise immunity, the recommended capacitance is 10nF~100nF.
Ordering Information
OCH170XXX
Package:
M: SIP3
TW:TSOT23-3L
V:DFN2020-6L
Packing:
Blank: Tube or Bulk or Box
A: Tape & Reel
Temperature Grade:
D: -40~85
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Page2 - 2
Ver. 1.3 Feb .27, 2018
源于灿瑞 磁传天下