GH211A

Data Sheet GH211A HALL DRIVER IC WITH FG OUTPUT  General Description The GH211A is an integrated Hall sensor with output driver and frequency generation (FG) designed for electronic commutation of brush-less DC motor and DC fan applications. The device includes an on-chip Hall sensor for magnetic sensing, an amplifier that amplifies the Hall voltage, a Schmitt trigger to provide switching hysteresis for noise rejection, a temperature compensation circuit to compensate the temperature drift of Hall sensitivity, two complementary open-drain drivers for sinking large load current. It also includes an internal voltage regulator which is used to provide bias voltage for internal circuits. Place the device in a variable magnetic field, while the magnetic flux density is larger than threshold BOP, OUT1 will be turned on (low) and OUT2 (and FG) will be turned off (high). This output state is held till the magnetic flux density reversal falls below BRP causing OUT1 to be turned off (high) and OUT2 (and FG) turned on (low). GH211A is available in TO-94 (SIP-4L) package.  Features • z • z On Chip Hall Effect Sensor • z 3.5~18V Power Supply Voltage Drivers Allow 400mA Without Overheating FG singnal Output Zener Diodes Protection for Output Driver Embedded Over-Temperature Protection Precise Magnetic Switching Thresholds  Applications • z z Dual-coil Brushless DC Fan • z • z • z • z Dual-coil Brushless DC Motor TO-94(SIP-4L) Figure 1. Package Type of GH211A  Ordering Information Package TO-94(SIP-4L) Temperature Range -40 to 105 ℃ Part Number GH211AHUB Sep 05. 2017 Rev. 2. 1 Marking ID GH211A Packing Type Bulk GOCHIP ELECTRONICS TECHNOLOGY (SHANGHAI) CO., LTD. 1 Data Sheet GH211A HALL DRIVER IC WITH FG OUTPUT  Pin Configuration UB Package (TO-94/SIP-4L) 1 23 4 4 GND 3 OUT2 2 OUT1 1 FG Figure 2. Pin Configuration of GH211A (Front View)  Pin Description Pin Number Pin Name Function 1 FG 2 OUT1 Output Pin 1 (Open-Drain) 3 OUT2 Output Pin 2 (Open-Drain) 4 GND FG signal Output Pin (Open-Drain) Ground Pin Sep 05. 2017 Rev. 2. 1 GOCHIP ELECTRONICS TECHNOLOGY (SHANGHAI) CO., LTD. 2 Data Sheet GH211A HALL DRIVER IC WITH FG OUTPUT  Functinal Block Diagram FG 1 VDD Over-Temperature Protection Recovery Internal Regulator OUT1 2 Digital Hall Sensor Amplifier Control Logics Schmitt OUT2 23 4 GND Figure 3. Functional Block Diagram of GH211A Sep 05. 2017 Rev. 2. 1 GOCHIP ELECTRONICS TECHNOLOGY (SHANGHAI) CO., LTD. 3 Data Sheet GH211A HALL DRIVER IC WITH FG OUTPUT  Absolute Maximum Ratings TA =25°C (Note 1) Parameter Symbol Condition Value Unit 22 V 33 V Supply Voltage (Continuous) VDD(CONT) Supply Voltage (Peak) VDD(PEAK) Supply currentt (Fault) IDD(FAULT) 3.5 mA Continuous current I OUT(HOLD) 400 mA Hold current I OUT(HOLD) 600 mA Peak current I OUT(PEAK) 800 mA FG pin sink current IFG 15 mA Power dissipation PD TO-94(SIP-4L) 550 mW Thermal Resistance (Junction to Ambient) θJA TO-94(SIP-4L) 227 ℃/W Thermal Resistance (Junction to Case) θJC TO-94(SIP-4L) 49 ℃/W Operating Junction temperature TJ -40 to 150 ℃ Storage temperature TSTG -55 to 160 ℃ Output Clamp Voltage of Zener Diode VZ 33 V Magnetic Flux Density B Unlimited Gauss 260 ℃ IR-Reflow Lead Temperature  ≤100s ≤200µ s 10s TP Recommended Operating Conditions Parameter Symbol Min Max Unit Power Supply Voltage VDD 3.5 18 V Operation Temperature TA -40 105 ℃ Note 1: Stresses greater than those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated above “Recommended Operating Conditions” is not implied. Exposure to “Absolute Maximum Ratings” for extended periods may affect device reliability. Sep 05. 2017 Rev. 2. 1 GOCHIP ELECTRONICS TECHNOLOGY (SHANGHAI) CO., LTD. 4 Data Sheet GH211A HALL DRIVER IC WITH FG OUTPUT  Electrical Characteristics VDD =12V , TA =25°C, unless otherwise specified. Symbol Conditions Min Supply Voltage VDD Operating (Note 2) Supply Current IDD Output open Output Current I OUT Parameter Output Leakage Current I LEAKAGE FG Output Low Voltage VFG R DSON Output Driver ON-Reistance  1.3 Max Unit 18 V 2.5 mA 400 mA VOUT =18V 0.1 10 µA I FG =5mA 200 400 mV TA =25 ℃ 1.4 1.8 Ohm TA =105℃ 2.0 2.5 Ohm TSD Thermal Shutdown Threshold Typ ℃ 165 Magnetic Characteristics VDD =12V , TA =25°C, unless otherwise specified. Parameter Symbol Min Typ Max Unit Operating Point B OP 5 30 60 Gauss Releasing Point B RP -60 -30 -5 Gauss Hysteresis B HYS Gauss 60 VOUT1 VOUT2 B HYS Off-state B HYS Off-state High High Turn off N B RP 0 Turn on Turn on On-state On-state B OP Low S N Turn off B RP B OP 0 Conditions OUT1 North Pole B OP < B RP High Low Low South Pole B OP > B RP Low High High Magnetic Pole (Note 3) OUT2 FG Note 2: The minimal value of VDD should be determined using the following equation: VDD = 3.5V + RCOIL * IDD Note 3: The magnetic pole is applied facing the marked side of the package. Sep 05. 2017 Rev. 2. 1 GOCHIP ELECTRONICS TECHNOLOGY (SHANGHAI) CO., LTD. 5 S Data Sheet GH211A HALL DRIVER IC WITH FG OUTPUT  Typical Application D1 VDD Coil 1 Coil 2 GH211A FG OUT1 OUT2 GND R1 5.1K VFG R2 4.7 C1 2.2 F R3 4.7 C2 2.2 F C3 2.2 F Figure6. Typical Application of GH211A Note: 1. D1 is an ordinary diode used to filter the noise from VDD and It is optional. 2. C1=C2=C3=2.2µF typical, electrolytic capacitors are better. They should be fine tuned based on system design. 3. R1=5.1K Ω typical. It should be selected according to FG signal requirement. 4. R2=R3=4.7Ω typical. They can be cancelled according to system requirement.  Marking Information (TO-94/SIP-4L) GH211A GH211A: Part No. YWWX 1 2 3 Y: Year, 0~9, ex: "7"=2017 WW: Nth Week, 01~52 X: Internal Code 4 Sep 05. 2017 Rev. 2. 1 GOCHIP ELECTRONICS TECHNOLOGY (SHANGHAI) CO., LTD. 6 Data Sheet GH211A HALL DRIVER IC WITH FG OUTPUT  Pacakge Information (UB: TO-94/SIP-4L) Unit: mm 0.63/0.84 0.27/0.48 1.75/1.95 1.15/1.35 Marking Side A D J 1 a 2 a E 2 b 1 L S F L c 1 b 1 e Size A b1 b2 c D e1 E F J L L1 S a1 a2 a3 a4 MIN. MAX. 1.45 1.65 0.38 0.44 0.35 0.45 5.12 5.32 1.24 1.30 3.55 3.75 0.00 0.20 4.10 4.30 14.00 14.60 1.32 1.52 0.63 0.83 5° 4° 7° 10° 12° 5° 7° TYP. 1.55 0.40 0.48 0.40 5.22 1.27 3.65 4.20 14.30 1.42 0.73 3° 5° 11° 6° Unit: mm 3 a ° 5 4 x 3 . 0 4 a Sep 05. 2017 Rev. 2. 1 GOCHIP ELECTRONICS TECHNOLOGY (SHANGHAI) CO., LTD. 7