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MLX92221LUA-AAA-004 データシート(PDF) 10 Page - Melexis Microelectronic Systems |
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MLX92221LUA-AAA-004 データシート(HTML) 10 Page - Melexis Microelectronic Systems |
10 / 14 page MLX92221-AAA 2-Wire Hall Effect Latch 390109224100 Rev. 1 Page 10 of 14 June/13 8 Application Information 8.1 Typical Automotive Application Circuit 8.2 Automotive and Harsh, Noisy Environments Application Circuit 8.3 Strobing VDD application (used for reduced self-heating) C1 10nF VDD GND TEST RSENSE VCC Notes: 1. For proper operation, a 10nF bypass capacitor should be placed as close as possible to the VDD and ground(GND) pin. For complete emissions protection a C1 = 68nF is recommended. 2. The TEST pin is to be left open or connected to GND. MLX92221 / 41 ECU VHSENSE 100 C1 68nF VDD GND TEST RSENSE VCC MLX92241 ECU VHSENSE 100 Notes: 1. For proper operation, a 10nF to 100nF bypass capacitor should be placed as close as possible to the VDD and ground pin. 2. The device could tolerate negative voltage down to -24V, so if negative transients over supply line VPEAK< -29V are expected, usage of the diode D1 is recommended. Otherwise only RSENSE is sufficient. When selecting the resistor RSENSE, three points are important: - the resistor has to limit IDD/IDDREV to 50mA maximum - the resistor has to withstand the power dissipated in both over voltage conditions (VRSENSE 2/R SENSE) - the resulting device supply voltage VDD has to be higher than VDD min (VDD = VCC – RSENSE.IDD) 3. The device could tolerate positive supply voltage up to +27V (until the maximum power dissipation is not exceeded), so if positive transients over supply line with VPEAK> 32V are expected, usage a zener diode DZ1 is recommended. The RSENSE-DZ1 network should be sized to limit the voltage over the device below the maximum allowed. DZ1 (optional, see Note 3) D1 (optional, see Note 2) MLX92221 / 41 C1 68nF VDD GND TEST RSENSE VCC MLX92221 / 41 ECU VHSENSE 100 Notes: 1. Given strobe timing is exemplary only. 2. For proper operation, a 10nF to 100nF bypass capacitor should be placed as close as possible to the VDD and ground pin. t t VDD IDD IONtyp I OFFtyp 12V South Pole weak South or B = null ON phase OFF phase (1ms) (1s) Valid IDD state tON tON Valid IDD state |
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同様の説明 - MLX92221LUA-AAA-004 |
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