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| MICRO POWER, ULTRA-SENSITIVE HALL SWITCH FSH4917 FEATURES Micro power design Operation with North or South pole(omni polar) 2.4V to 5.5V battery operation High sensitivity and high stability of the magnetic switching points High resistance to mechanical stress Digital output signal Good RF noise immunity -40 to 85 operating temperature Programming pin for switching detection of output Package: SOT23-6L GENERAL DESCRIPTION The FSH4917 is an Integrated Hall Effect Sensor designed specifically to meet the requirements of l o w power devices. e.g. as an On/Off switch in Cellular Flip-Phones, with battery operating voltages of 2.4V - 5.5V. Precise magnetic switching points and high temperature stability are achieved through the unique design of the internal circuit. An onboard clock scheme is used to reduce the average operating current of the IC. During the operate phase the IC compares the actual magnetic field detected with the internally compensated switching points. The output is switched at the end of each operating phase. During the Stand-by phase the output stage is latched and the current consumption of the device reduced to some A. The IC switching behavior is Omni polar, i.e. it can be switched on with either the North or South pole of a magnet. The PRG pin can be connected to VDD which holds the output VO at a High level for B=0mT; conversely the output VO can be inverted by connecting the PRG pin to GND, which will hold the output VO at a Low level for B=0mT. In this later case the presence of an adequate magnetic field will cause the output VO to switch to a High level (i.e. off state). FUNCTIONAL BLOCK DIAGRAM VDD Awake & Sleep Timing Logic VOUT Hall Plane Dynamic Offset Cancellation Latch circuit Chopper Amplifier Hysteresis Latch GND PRG TYPICAL APPLICATION CIRCUIT 6 PRG 5 GND FSH4917 4 GND _ 0.1F Vout 3 50K Vco 1 GND 2 + 2.4-5.5V Output 1/9 2006-12-22 MICRO POWER, ULTRA-SENSITIVE HALL SWITCH FSH4917 PIN CONFIGURATION (Top View) PRG GND GND 6 5 4 1 VDD 2 GND 3 OUTPUT Pin 1 2 3 4 5 6 Symbol VDD GND OUTPUT GND GND PRG Function Supply Voltage Ground Signal Output (Open Drain) Ground Ground Programming Input ABSOLUTE MAXIMUM RATINGS Parameter Symbol Maximum Unit Supply Voltage VDD 5.5 V Supply Current IDD 2.5 mA Output Voltage VO 5.5 V Output Current IO 1 mA PRG Input voltage VPRG 5.5 V Operating Temperature Range TOP -40 to 85 Junction Temperature TJ -40 to 150 Storage Temperature TSTG -40 to 150 Magnetic Flux Density B unlimited mT Power Dissipation PD 230 mW Caution: Stress above the listed absolute maximum rating may cause permanent damage to the device TYPICAL IR SOLDER-REFLOW PROFILE Lead Temperature (Soldering, 10sec)+260 2555 101sec 15010 ROOM TEMP 9030sec 2~5/sec 2~5/sec SECOND Soldering Condition 2/9 2006-12-22 MICRO POWER, ULTRA-SENSITIVE HALL SWITCH FSH4917 RECOMMENDED OPERATING RANGE Parameter Symbol Min. Typ. Supply Voltage1) VDD 2.4 2.7 Output Voltage VO -0.3 2.7 Ambient Temperature TA -40 25 1) . A Ceramic Bypass Capacitor of 0.1uF at VDD to GND is highly recommended. Max. 5.5 5.5 85 Unit V V ELECTRICAL CHARACTERISTICS Parameter Averaged Supply Current Supply Current During Operating Time Supply Current During Standby Time Output Saturation Voltage Output Leakage Current Operating Time Standby Time Duty Cycle 1) Operating voltage is 2.7V. Symbol IDD(AVG) IDD(OP) IDD(STB) VO(SAT) IO(LEAK) TOP TSTB TOP / TSTB IO=1mA Test Condition Min. Typ. 31) 1.11) 2.51) 0.1 0.01 56 140 0.04 Max. 20 0.3 1 Unit uA mA uA V uA us ms % MAGNETIC CHARACTERISTICS PRG connected to VDD Parameter Operate Points (Output ON) Release Points (Output OFF) Hysteresis Symbol BOPS BOPN BRPS BRPN BHYS Min. 40 -70 30 -60 5 Typ. 55 -55 45 -45 10 Max. 70 -40 60 -30 15 Unit G G G G G PRG connected to GND Parameter Symbol Min. Typ. Operate Points BOPS 30 45 (Output ON) -60 -45 BOPN Release Points BRPS 40 55 (Output OFF) -70 -55 BRPN Hysteresis BHYS 5 10 Note: If not other specified, typical characteristics apply at TA = 25 C and VDD = 2.7 V Max. 60 -30 70 -40 15 Unit G G G G G 3/9 2006-12-22 MICRO POWER, ULTRA-SENSITIVE HALL SWITCH FSH4917 TIMING DIAGRAM IDD Operating Time IDD(OP) IDD(AVG) IDD(STB) TOP 56us TOP TSTB 140ms Latch Output t PROGRAMMING OF OUTPUT WITH PRG PIN VOUT VOH Turn OFF VOUT VOH Turn OFF VOL BOPN BRPN 0 BRPS BOPS Turn ON B VOL Turn ON BOPN BRPN 0 BRPS BOPS B PRG connected to VDD PRG connected to GND 4/9 2006-12-22 MICRO POWER, ULTRA-SENSITIVE HALL SWITCH FSH4917 TYPICAL PERFORMANCE CHARACTERISTICS Magnetic switching points versus temperature (VDD=2.7V) B[G] 80 60 40 20 0 -20 -40 -60 -80 -40 -20 0 20 40 60 BRPN BOPN 80 T [oC] BOPS BRPS B[G] 80 60 40 20 0 -20 -40 -60 -80 2.5 3 3.5 4 4.5 5 BRPN BOPN 5.5 VDD [V] BOPS BRPS Magnetic switching points versus supply voltage Average current versus supply voltage IDD[uA] 20 18 16 14 12 10 8 6 4 2 0 2.5 3 3.5 4 4.5 5 5.5 VDD [V] IDD[uA] 10 8 6 4 2 0 Average current versus temperature (VDD=2.7V) -40 -20 0 20 40 60 o 80 T [ C] 5/9 2006-12-22 MICRO POWER, ULTRA-SENSITIVE HALL SWITCH FSH4917 ORDERING INFORMATION FSH4917XXX Package: C: SOT23-6L Packing: A: Tape & Reel Temperature Grade: D: -40~85 MARKING INFORMATION AXYXX Internal Code Date Code: Y: Year (1=2001) MP Version: A~Z Part Number: FSH4917 6/9 2006-12-22 MICRO POWER, ULTRA-SENSITIVE HALL SWITCH FSH4917 PACKAGE INFORMATION A G L 6 5 L 4 E B C H 1 2 3 I D 0.20 F K J Symbol A B C D E F G H I J K L Min. 0.30 0o 1.10 0.08 0.30 Dimensions In Millimeters Nom. Max. 2.90 Ref. 2.80 Ref. 1.60 Ref. 0.50 0.15 4o 8o 1.90 Ref. 1.20 1.30 0.22 0.45 0.60 0.60 Ref. 0.95 Ref. Min. Dimensions In Inches Nom. 0.114 Ref. 0.110 Ref. 0.063 Ref. Max. 0.012 0o 0.044 0.003 0.012 4o 0.075 Ref. 0.048 0.018 0.024 Ref. 0.037 Ref. 0.020 0.006 8o 0.052 0.009 0.024 7/9 2006-12-22 MICRO POWER, ULTRA-SENSITIVE HALL SWITCH FSH4917 PACKING INFORMATION 1Embossed Plastic Tape A B C I D "A" E "B" Ao G DETAIL "A" Ko t Bo H DETAIL "B" Model FSH4917 A 4.000.1 B 2.000.05 C 4.000.1 Dimension (mm) D E 1.750.1 3.500.05 F F 8.000.3 I 1.500.1 Model FSH4917 G MAX. 3o H MAX. 3o Dimension (mm) Ao Bo 3.200.1 3.150.1 Ko 1.400.05 t 0.200.03 8/9 2006-12-22 MICRO POWER, ULTRA-SENSITIVE HALL SWITCH FSH4917 2) Taping Size 40PCS(MIN.) 2500PCS 40PCS(MIN.) TAPE SEALING END START Model FSH4917 3) Reel Dimension Symbol 5" Reel Taping Count 2500 unit: pcs Packing Tape Embossed Plastic Tape W2 D A W1 B C Model FSH4917 Reel 5" A 1781.0 B 72.01.0 C 62.01.0 D 58.00.2 W1 8.41.0 unit: mm W2 1.50.3 Packing Type: 2500 EA / REEL, 5 REEL / BOX 9/9 2006-12-22 |
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