EVALUATION KIT AVAILABLE Click here for production status of specific part numbers. MAX9621 Dual, 2-Wire Hall-Effect Sensor Interface with Analog and Digital Outputs General Description Features The MAX9621 is a continuation of the Maxim family of Provides Supply Current and Interfaces to Two Hall-effect sensor interfaces that already includes the 2-Wire Hall-Effect Sensors MAX9921. The MAX9621 provides a single-chip solution 5.5V to 18V Operating Voltage Range to interface two 2-wire Hall-effect sensors to low-voltage Protects Hall Sensors Against Up to 60V Supply microprocessors (P) through either a digital output for Transients Hall-effect switches or an analog output for linear informa- Low-Power Shutdown for Power Saving tion or both. Filtered Digital Outputs The MAX9621 protects the Hall sensors from supply Analog Output Mirrors the Hall Sensor Current transients up to 60V at the BAT supply. Normal operating Hall Inputs Protected from Short to Ground supply voltage ranges from 5.5V to 18V. If the BAT supply rises above 18V, the MAX9621 shuts off the current to Hall Sensor Blanking Following Power-Up and the Hall sensors. When a short-to-ground fault condition Restart from Shutdown and Short to Ground is detected, the current to the Hall input is shut off and Operates with 3V Ground Shift Between the Hall the condition is indicated at the analog output by a zero- Sensor and the MAX9621 current level and a high digital output. 2kV Human Body Model ESD and 200V Machine The MAX9621 provides a minimum of 50s blanking time Model ESD at All Pins following Hall sensor power-up or restart. The open drain- 3mm x 5mm, 10-Pin MAX Package digital outputs are compatible with logic levels up to 5.5V. The MAX9621 is available in a 3mm x 5mm, 10-pin Functional Diagram MAX package and is rated for operation in the -40C to +125C temperature range. BAT Applications REF ISET REFERENCE BAT SLEEP-MODE SLEEP Window Lifters CONTROL 10k Seat Movers Electric Sunroofs Seatbelt Buckles AOUT1 DOUT1 Door Power Locks IN1 FILTER REF Ignition Key Steering Column Speed Sensing BAT INPUT MAX9621 SHORT DETECTION Ordering Information AOUT2 PART TEMP RANGE PIN-PACKAGE DOUT2 IN2 MAX9621AUB+T -40C to +125C 10 MAX FILTER REF MAX9621AUB/V+ -40C to +125C 10 MAX +Denotes a lead(Pb)-free/RoHS-compliant package. GND T = Tape and reel. /V denotes an automotive qualified part. Typical Application Circuit appears at end of data sheet. MAX is a registered trademark of Maxim Integrated Products, Inc. 19-5024 Rev 2 2/20MAX9621 Dual, 2-Wire Hall-Effect Sensor Interface with Analog and Digital Outputs Absolute Maximum Ratings BAT to GND ...........................................................-0.3V to +60V Continuous Power Dissipation for a Single-Layer Board ISET to BAT ..........................................................-2.0V to +0.3V (T = +70C) A IN1, IN2 to GND ................ -3V to lower of +60V or (V + 1V) 10-Pin MAX (derate 5.6mW/C) above +70C .......444.4mW BAT AOUT1, DOUT1, AOUT2, DOUT2, Continuous Power Dissipation for a Multilayer Board SLEEP to GND ....................................................-0.3V to +6V (T = +70C) A Short-Circuit Duration 10-Pin MAX (derate 8.9mW/C) above +70C .......715.6mW AOUT1, DOUT1, AOUT2, DOUT2 to GND Operating Temperature Range ..........................-40C to +125C or to 5.5V (individually) ........................................Continuous Junction Temperature ......................................................+150C Current In to IN1, IN2 .....................................................100mA Storage Temperature Range .............................-65C to +160C Current In to Any Other Pin ..............................................20mA Lead Temperature (soldering, 10s) .................................+300C Soldering Temperature (reflow) .......................................+260C Stresses beyond 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 in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Package Information PACKAGE TYPE: 10 MAX Package Code U10+2 Outline Number 21-0061 Land Pattern Number 90-0330 THERMAL RESISTANCE, FOUR-LAYER BOARD: Junction to Ambient ( ) 112C/W JA Junction to Case ( ) 37C/W JC For the latest package outline information and land patterns (footprints), go to www.maximintegrated.com/packages. Note that a +, , or - in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status. Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer board. For detailed information on package thermal considerations, refer to www.maximintegrated.com/thermal-tutorial. Maxim Integrated 2 www.maximintegrated.com