AH1802 MICROPOWER, ULTRA-SENSITIVE OMNIPOLAR HALL-EFFECT SENSOR SWITCH General Description Features • • • • • • • • • • Micropower operation Operation with magnetic field of either north or south pole (omnipolar) 2.5V to 5.5V battery operation Chopper stabilized • Superior temperature stability • Extremely Low Switch-Point Drift • Insensitive to Physical Stress Good RF noise immunity -40°C to 85°C operating temperature SC59/Low profile DFN2020-6 package ESD (HBM) ＞ 5KV for DFN2020-6 ＞ 6KV for SC59 SC59 (commonly known as SOT23 in Asia) and DFN2020-6: Available in “Green” Molding Compound (No Br, Sb) Lead Free Finish/RoHS Compliant (Note 1) AH1802 is comprised of two Hall effect plates and an open-drain 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 24 W with a 3V power source. Either north or south pole 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), then turned off. Applications • • • Cover switch in clam-shell cellular phones Cover switch in Notebook PC/PDA Contact-less switch in consumer products Ordering Information AH1 802-X X X Note: Package Lead Free Packing W : SC59 SN : DFN2020-6 G : Green -7 : Taping 1. RoHS revision 13.2.2003. Glass and High Temperature Solder Exemptions Applied, see EU Directive Annex Notes 5 and 7. Device AH1802-W AH1802-SN Note: Package Code W SN Packaging (Note 2) SC59 DFN2020-6 7” Tape and Reel Quantity Part Number Suffix 3000/Tape & Reel -7 3000/Tape & Reel -7 2. 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. AH1802 Rev. 2 1 of 7 www.diodes.com JULY 2007 © Diodes Incorporated AH1802 MICROPOWER, ULTRA-SENSITIVE OMNIPOLAR HALL-EFFECT SENSOR SWITCH Pin Assignment (1) SC59 (2) DFN2020-6 ( Top View ) ( Bottom view ) 3. Output 1. Vdd NC 3. Output GND 2. 1. Vdd NC NC 2. GND Note: 3. NC is “No Connection” which is recommended to be tied to ground. Pin Descriptions Name Vdd GND Output P/I/O P/I P/I O Pin # 1 2 3 Description Power Supply Input Ground Output Pin Block Diagram 1 Vdd Power switch Offset Cancelling Hall Plate Output Amp Latch 3 Logical GND 2 AH1802 Rev. 2 Offset Cancelling Hall Plate Amp 2 of 7 www.diodes.com Latch JULY 2007 © Diodes Incorporated AH1802 MICROPOWER, ULTRA-SENSITIVE OMNIPOLAR HALL-EFFECT SENSOR SWITCH Typical Circuit 2.5~5.5V RL C Output AH1802 GND Note: 4. C is for power stabilization and to strengthen the noise immunity, the recommended capacitance is 10nF~100nF. Absolute Maximum Ratings Symbol Vdd B TA TS PD TJ (at TA = 25°C) Characteristics Supply voltage Magnetic flux density Operating Temperature Range Storage Temperature Range Package Power Dissipation Values 7 Unlimited -40 to +85 -65 to +150 SC59 DFN2020-6 Maximum Junction Temperature Recommended Operating Conditions Symbol Vdd AH1802 Rev. 2 Parameter Supply Voltage Unit V °C °C 230 mW 150 °C ( TA = 25°C ) Conditions Operating 3 of 7 www.diodes.com Rating Unit 2.5~5.5 V JULY 2007 © Diodes Incorporated AH1802 MICROPOWER, ULTRA-SENSITIVE OMNIPOLAR HALL-EFFECT SENSOR SWITCH Electrical Characteristics Symbol Vout Ioff Idd(en) Idd(dis) Idd(avg) Tawake Tperiod D.C. ( TA = +25°C, Vdd = 3V; unless otherwise specified) Characteristic Conditions Output On Voltage Iout = 1mA Output Leakage Current Vout = 5.5V, Output off Chip enable, TA = 25°C, Vdd = 3V Chip enable, TA = -40~85°C, Vdd = 2.5~5.5V Chip disable, TA = 25°C, Vdd = 3V Chip disable, TA = -40~85°C, Vdd = 2.5~5.5V Supply Current Average supply current, TA = 25°C, Vdd = 3V Average supply current, TA = -40~85°C, Vdd = 2.5~5.5V Awake Time Period Duty Cycle Magnetic Characteristics Min Typ Max Unit - 0.1 <0.1 3 3 5 5 0.3 1 6 9 10 14 V µA mA mA µA µA - 8 16 µA - 8 23 µA - 75 75 0.1 125 125 - µs ms % (TA = 25°C, Vdd = 3V, Note 5,6) (1mT=10 Gauss) Symbol Characteristic Bops(south pole to brand side) Operate Point Bopn(north pole to brand side) Brps(south pole to brand side) Release Point Min Typ Max 20 28 40 -40 -28 -20 10 20 - - -20 -10 5 8 - Brpn(north pole to brand side) Bhy( Bopx − Brpx ) Note: Hysteresis Unit Gauss 5. Typical data is at TA = 25°C, Vdd = 3V, and for design information only. 6. Operating point and release point will vary with supply voltage and operating temperature. Vcc ( off-state ) Turn on Bhy Turn off Output ( Output Voltage ) ( Output Voltage ) Output ( on-state ) Vsat Bopn Brpn 0 ( Magnetic flux density B ) AH1802 Rev. 2 4 of 7 www.diodes.com ( off-state ) Turn off Vcc Bhy Turn on Vsat ( on-state ) 0 Brps Bops ( Magnetic flux density B ) JULY 2007 © Diodes Incorporated AH1802 MICROPOWER, ULTRA-SENSITIVE OMNIPOLAR HALL-EFFECT SENSOR SWITCH Performance Characteristics (1) SC59 and DFN2020-6 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 o w e r D is s ip a tio n C u rv e P D (m W ) 250 200 150 100 50 0 0 25 50 75 100 125 150 T A (℃ ) Marking Information (1) SC59 (2) DFN2020-6 ( Top View ) XX Y M X Part Number AH1802 AH1802 Rev. 2 ( Top View ) XX Y M X Pin 1 indicator : KC : AH1802 : Year 0~9 : Month A~L : Internal code A~Z: Green Package SC59 XX YM X Identification Code KC Part Number AH1802 5 of 7 www.diodes.com KC : AH1802 Date code Internal code A~Z : Green M : Month (A~L) Y : Year (0~9) Package Identification Code DFN2020-6 KC JULY 2007 © Diodes Incorporated AH1802 MICROPOWER, ULTRA-SENSITIVE OMNIPOLAR HALL-EFFECT SENSOR SWITCH Package Information (unit: mm) (1) SC59 (commonly known as SOT23 in Asia) TOP VIEW 1.50/ 1.70 0.35/0.50 2.70/ 3.00 1.90 2.90/3.10 1.00/ 1.30 0.013/0.10 0.10/0.20 0.95 0.35/0.55 0°/8° 0.43mon. 0.57/0.63 (2) DFN2020-6 Marking 0.05 C 0/0.05 0.15max. 0.15 C 0.08 C 2x Pin#1 ID 1.95/2.075 A Sensor location 0.30/0.40 1.45/1.65 R0 2x- Seating plane C 0.76/0.96 1.95/2.075 B (Active area depth) .1 0.15 C 0.65nom. 0.2/0.3 0.05 M C A B Bottom View AH1802 Rev. 2 6 of 7 www.diodes.com JULY 2007 © Diodes Incorporated AH1802 MICROPOWER, ULTRA-SENSITIVE OMNIPOLAR HALL-EFFECT SENSOR SWITCH IMPORTANT NOTICE Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes without further notice to any product herein. Diodes Incorporated does not assume any liability arising out of the application or use of any product described herein; neither does it convey any license under its patent rights, nor the rights of others. The user of products in such applications shall assume all risks of such use and will agree to hold Diodes Incorporated and all the companies whose products are represented on our website, harmless against all damages. LIFE SUPPORT Diodes Incorporated products are not authorized for use as critical components in life support devices or systems without the expressed written approval of the President of Diodes Incorporated. AH1802 Rev. 2 7 of 7 www.diodes.com JULY 2007 © Diodes Incorporated