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AH1902-FT4-7

更新时间： 2024-11-29 01:06:35
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美台 - DIODES /
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11页 563K
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HIGH SENSITIVITY MICROPOWER OMNIPLOAR HALL-EFFECT SWITCH

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AH1902-FT4-7 数据手册

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AH1902  
HIGH SENSITIVITY MICROPOWER  
OMNIPLOAR HALL-EFFECT SWITCH  
Description  
Pin Assignments  
The AH1902 is a high-sensitivity micropower Omnipolar Hall effect  
switch IC with internal pull up and pull down capability. Designed for  
portable and battery powered consumer equipment such as cellular  
phones and portable PCs to office equipment, home appliances and  
industrial applications, the average supply current is only 4.3μA at  
1.8V. To support potable equipment the AH1902 can operate over the  
supply range of 1.6V to 3.6V and uses a hibernating clocking system  
to minimize the power consumption. To minimize PCB space, the  
AH1902 is available in small low profile X1-DFN1216-4,  
X2-DFN2015-6 and SOT553 packages.  
( Top View )  
( Top View )  
VDD  
NC  
1
2
3
6
5
4
OUTPUT  
NC  
1
2
4
3
VDD  
NC  
OUTPUT  
GND  
GND  
NC  
X2-DFN2015-6  
X1-DFN1216-4  
( Top View )  
1
5
4
NC  
GND  
NC  
OUTPUT  
2
3
The output is activated with either a north or south pole of sufficient  
magnetic field strength. When the magnetic flux density (B)  
perpendicular to the package is larger than operate point (Bop), the  
output will be turned on (pulled low) and held until B is lower than  
release point (Brp).  
VDD  
SOT553  
Applications  
Features  
Open and Close Detect for Flip/Slide Cellular Phones  
Omnipolar Operation (North or South Pole)  
Supply Voltage of 1.6V to 3.6V  
High Sensitivity  
Smart Cover or Dock Detect for Cellular Phones and Tablet PCs  
Cover or Display Switch in Portable PCs (eg: Ultrabook)  
Digital Still, Video Cameras and Handheld Gaming Consoles  
Door, Lids and Tray Position Switches  
Micropower Operation  
Chopper Stabilized Design Provides:  
Level, Proximity and Position Switches  
-
-
-
Superior Temperature Stability  
Minimal Switch Point Drift  
Contact-Less Switches in Home Appliances and Industrial  
Applications  
Enhanced Immunity to Physical Stress  
No External Pull-up Resistors Required  
Good RF Noise Immunity  
-40°C to +85°C Operating Temperature  
High ESD capability of 8kV (Human Body Model)  
Small Low Profile X1-DFN1216-4, X2-DFN2015-6 and SOT553  
Packages  
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)  
Halogen and Antimony Free. “Green” Device (Note 3)  
Notes:  
1. EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant. All applicable RoHS exemptions applied.  
2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green"  
and Lead-free.  
3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and  
<1000ppm antimony compounds.  
Typical Applications Circuit  
1.6V to 3.6V  
VDD  
OUTPUT  
AH1902  
CIN  
GND  
Note:  
4. CIN is for power stabilization and to strengthen the noise immunity, the recommended capacitance is 100nF typical and should be placed as close to  
the supply pin as possible.  
1 of 11  
www.diodes.com  
April 2016  
© Diodes Incorporated  
AH1902  
Document number: DS36533 Rev. 4 - 2  
1234567...11

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