AH1888-FJG-7

AH1888 MICROPOWER, GENERAL-SENSITIVE HALL EFFECT SWITCH Description The AH1888 micro power Omni-polar Hall Effect switch IC designed for portable and battery powered equipment such as cellular phones, PDA’ s and portable PC’ s. Based on two sensitive Hall Effect plates and chopper stabilized architecture the AH1888 provides a reliable solution over the whole operating range. To support portable and battery powered equipment the design has been optimized to operate over the supply range of 1.65V to 3.3V and consumes only 12.6uW with a supply of 1.8V. The outputs are switched with either a north or south pole of sufficient strength. When the magnetic flux density (B) is larger than operate point (Bop) the output is switched on. The output is turned off when B becomes lower than the release point (Brp). The output will remain off when there is no magnetic field. The AH1888-ZG has two outputs, output one pulls low when switched on and output two is inverted. The AH1888-FJG provides output one and AH1888-FJRG provides output two. Pin Assignments ( Top View ) Output 2 GND NC 1 2 3 SOT553 5 Output1 4 Vdd ( Top View ) 3. GND ( Top View ) 3. GND 1. Vdd 2. Output 1 1. Vdd 2. Output 2 DFN2020-3 DFN2020R-3 Features • • • • • • • • • • • • • • • Omni-polar (north or south pole) operation Single or dual output options Internal output pull up capability Micropower operation 1.65V to 3.3V operating range Chopper stabilized design provides Superior temperature stability Minimal switch point drift Enhanced immunity to stress Good RF noise immunity -40°C to 85°C operating temperature ESD (HBM)＞4KV for SOT553 ESD (HBM)＞5KV for DFN2020-3 and DFN2020R-3 Package: SOT553, DFN2020-3 and DFN2020R-3 “Green” Molding Compound Applications • • • Cellular phone PDA Cordless phone AH1888 Document number: DS31565 Rev. 6 - 2 1 of 11 www.diodes.com August 2010 © Diodes Incorporated AH1888 MICROPOWER, GENERAL-SENSITIVE HALL EFFECT SWITCH Typical Application Circuit (1) SOT553 (2) DFN2020-3 (3) DFN2020R-3 Vdd Vdd Vdd Output 1 AH1888 Output 2 GND GND AH1888 Output 1 AH1888 GND Output 2 Pin Descriptions Pin Name Vdd GND Output 1 Output 2 P/I/O P/I P/I O O Ground Output Pin ( Active Low ) Output Pin ( Active High ) Description Power Supply Voltage AH1888 Document number: DS31565 Rev. 6 - 2 2 of 11 www.diodes.com August 2010 © Diodes Incorporated AH1888 MICROPOWER, GENERAL-SENSITIVE HALL EFFECT SWITCH Functional Block Diagram (1) SOT553 Vdd Power switch Hall Plate Offset Cancelling Amp Latch Output 1 Logical Hall Plate Offset Cancelling GND Vdd Amp Latch Output 2 GND (2) DFN2020-3 Vdd Power switch Hall Plate Offset Cancelling Amp Latch Logical Hall Plate Offset Cancelling Output 1 Amp Latch GND (3) DFN2020R-3 Vdd Power switch Hall Plate Offset Cancelling Amp Latch Logical Hall Plate Offset Cancelling Output 2 Amp Latch GND AH1888 Document number: DS31565 Rev. 6 - 2 3 of 11 www.diodes.com August 2010 © Diodes Incorporated AH1888 MICROPOWER, GENERAL-SENSITIVE HALL EFFECT SWITCH Absolute Maximum Ratings (TA = 25°C) Symbol Vdd B Ts PD TJ Supply voltage Magnetic flux density Storage Temperature Range Package Power Dissipation Maximum Junction Temperature Characteristics Values 5 Unlimited -65 to +150 230 150 Unit V °C mW °C Recommended Operating Conditions (TA = 25°C) Symbol Vdd TA Characteristic Supply Voltage Operating Temperature Range Conditions Operating Operating Rating 1.65 to 3.3 -40 to +85 Unit V °C Electrical Characteristics (TA = 25°C, Vdd = 1.8V, unless otherwise specified) Symbol VOH VOL Idd(en) Idd(dis) Idd(avg) Tawake Tperiod D.C. Notes: Characteristic Output On Voltage (High side) Output On Voltage (Low side) Supply Current Awake Time Period Duty Cycle Conditions IO= -0.5mA IO= 0.5mA Chip enable Chip disable Average supply current (Note 1) (Note 1) Min Vdd-0.2 - Typ. 2 5 7 50 50 0.1 Max 0.2 4 8 12 100 100 - Unit V V mA uA uA µs ms % 1. When power is initially turned on, Vdd must be within its correct operating range (1.65V to 3.3V) to guarantee the output sampling. The output state is valid after the second operating cycle (typical 100ms). AH1888 Document number: DS31565 Rev. 6 - 2 4 of 11 www.diodes.com August 2010 © Diodes Incorporated AH1888 MICROPOWER, GENERAL-SENSITIVE HALL EFFECT SWITCH Magnetic Characteristics (TA = 25°C, Vdd = 1.8V~3.0V, Note 2 & 3) (1mT=10 Gauss) Symbol Bops(south pole to brand side) Bopn(north pole to brand side) Brps(south pole to brand side) Brpn(north pole to brand side) Bhy( Bopx − Brpx ) Notes: Characteristic Operate Point Release Point Hysteresis Min -79 35 3 Typ. 61 -61 53 -53 8 Max 79 -35 - Unit Gauss 2. Typical data is at Vdd = 3V. 3. The magnetic characteristics may vary with supply voltage, operating temperature and after soldering. Output 1 ( Active Low ) ( Output Voltage ) ( Output Voltage ) Output 1 ( Active Low ) Vdd Turn on ( off-state ) Turn off ( off-state ) Turn off Vdd Bhy Bhy Turn on ( on-state ) Vsat S N V sat ( on-state ) N Bopn Brpn 0 ( Magnetic flux density B ) 0 Brps Bops ( Magnetic flux density B ) S Output 2 ( Active High ) ( Output Voltage ) ( Output Voltage ) Output 2 ( Active High ) Vdd ( off-state ) Turn off ( off-state ) Turn off Vdd Turn on Bhy Bhy Turn on ( on-state ) Vsat S N V sat ( on-state ) N Bopn Brpn 0 ( Magnetic flux density B ) 0 Brps Bops ( Magnetic flux density B ) S AH1888 Document number: DS31565 Rev. 6 - 2 5 of 11 www.diodes.com August 2010 © Diodes Incorporated AH1888 MICROPOWER, GENERAL-SENSITIVE HALL EFFECT SWITCH Typical Characteristics Sw itch points vs Tem perature Vdd = 2.8V 80 60 Bops 80 60 Sw itch Points vs Supply Voltage TA = 25 ℃ Bops Switch Point (Gauss) Switch Point (Gauss) 40 20 0 -20 -40 -60 -80 -50 Brps 40 20 0 -20 -40 -60 -80 Brps Brpn Bopn -25 0 25 50 75 100 Brpn Bopn 2.0 2.5 3.0 3.5 1.5 Tem perature ( ℃ ) Vdd (V) Performance Characteristics For SOT553, DFN2020-3 and DFN3030R-3 TA (°C) 25 50 60 70 80 85 90 100 110 120 130 140 150 PD (mW) 230 184 166 147 129 120 110 92 74 55 37 18 0 P D (m W ) 300 P o w e r D is s i p a tio n C u rv e 200 100 0 -4 0 0 25 50 75 85 100 12 5 150 o TA ( C) AH1888 Document number: DS31565 Rev. 6 - 2 6 of 11 www.diodes.com August 2010 © Diodes Incorporated AH1888 MICROPOWER, GENERAL-SENSITIVE HALL EFFECT SWITCH Ordering Information AH 1888 - XXX G - 7 Package Z : SOT553 FJ : DFN2020-3 FJR : DFN2020R-3 Device Package Code Z FJ FJR Packaging (Note 4 & 5) SOT553 DFN2020-3 DFN2020R-3 Green Packing 7 : Tape & Reel G : Green AH1888-ZG-7 AH1888-FJG-7 AH1888-FJRG-7 Notes: 7” Tape and Reel Quantity Part Number Suffix 3000/Tape & Reel -7 3000/Tape & Reel -7 3000/Tape & Reel -7 4. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at http://www.diodes.com/products/lead_free.html. 5. Pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be found on our website at http://www.diodes.com/datasheets/ap02001.pdf. AH1888 Document number: DS31565 Rev. 6 - 2 7 of 11 www.diodes.com August 2010 © Diodes Incorporated AH1888 MICROPOWER, GENERAL-SENSITIVE HALL EFFECT SWITCH Marking Information (1) SOT553 ( Top View ) XX : Identification Code Y : Year : 0~9 W : Week : A~Z : 1~26 week; a~z : 27~52 week; z represents 52 and 53 week X : A~Z : Green XX Y W X Part Number AH1888 Package SOT553 Identification Code KV (2) DFN2020-3 and DFN2020R-3 ( Top View ) XX Y WX Pin 1 indicator XX : Identification Code Y : Year : 0~9 W : Week : A~Z : 1~26 week; a~z : 27~52 week; z represents 52 and 53 week X : A~Z : Green Package DFN2020-3 DFN2020R-3 Identification Code KV KW Part Number AH1888 AH1888 AH1888 Document number: DS31565 Rev. 6 - 2 8 of 11 www.diodes.com August 2010 © Diodes Incorporated AH1888 MICROPOWER, GENERAL-SENSITIVE HALL EFFECT SWITCH Package Outline Dimensions (All Dimensions in mm) (1) Package Type: SOT553 1.50/1.70 0.30 C D 0.30 C D 1.0Typ. C L A 1.0Typ. 5x-0.5 0.10/0.18 6°~8 ° C L D 0.45/0.67 1.55/1.70 1.10/1.25 0.32/0.58 Hall Sensor 0.30 C Pin1 0.5Typ. 6°~8° 1.2 0.15/0.30(5x) B 0.10 M C A-B D Pin1 0.5Typ. 0.3 Land Pattern Recommendation (Unit:mm) Top View 6°~ 8° (2) Package Type: DFN2020-3 and DFN2020R-3 1.03 0.3 0.74 C L 0.55/0.62 1.25 0.325 Pin3 0.47/0.53 2.4 Top View 0/0.05 0.925 Sensor location C L 0.65 0.10 C 0.08 C Seating plane B Pin1 0.5 Pin2 1 0.5Typ R0 Pin1 C L C .2 Pin2 1.85/2.15 0.775/0.975 C L 0.35/0.45 Land Pattern Recommendation Unit:mm Top View DIE 2x- 0.25 B Pin3 0.138 0.2/0.3 0.10 M C A B 1.1/1.35 1.85/2.15 0.25 A 0.18±0.07 0.325 A Bottom View 2x AH1888 Document number: DS31565 Rev. 6 - 2 9 of 11 www.diodes.com 0.138 0.3 1.7 2.2 C L 0.1 C L August 2010 © Diodes Incorporated AH1888 MICROPOWER, GENERAL-SENSITIVE HALL EFFECT SWITCH Taping Orientation (Note 6) For DFN2020-3 and DFN2020R-3 Notes: 6. The taping orientation of the other package type can be found on our website at http://www.diodes.com/datasheets/ap02007.pdf. AH1888 Document number: DS31565 Rev. 6 - 2 10 of 11 www.diodes.com August 2010 © Diodes Incorporated AH1888 MICROPOWER, GENERAL-SENSITIVE HALL EFFECT SWITCH IMPORTANT NOTICE DIODES INCORPORATED MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARDS TO THIS DOCUMENT, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION). Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes without further notice to this document and any product described herein. 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