The Allegro ® A1202 and A1203 Hall-effect bipolar switches are the next generation replacement and extension of the popular Allegro A3133 and A3132 bipolar switch product family. The A120x series is manufactured using BiCMOS technology and is associated with continuous devices that offer fast power-up and low operating noise. Device programming occurs after the package to eliminate bias caused by package stress, ensuring higher switch point accuracy. The unique Hall element geometry and low bias amplifier help reduce noise and reduce residual bias voltages typically caused by device overmolding, temperature spikes, and thermal stress.
The A120x Hall-effect bipolar switch contains the following components on a single silicon: a voltage regulator, a Hall voltage generator, a small signal amplifier, a Schmitt trigger, and an NMOS output transistor. The integrated voltage regulator allows operation between 3.8 and 24 V. The extended on-board protection circuitry enables an absolute maximum voltage rating of ±30 V, providing superior protection for automotive and industrial motor rectification applications without the need for additional external components. All devices in the family are indistinguishable except for the magnetic switching points.
The small and refined geometry of the BiCMOS process allows these devices to be available in ultra-small packages. Available package types provide magnetically optimized solutions for most applications. The package LH is a SOT23W miniature low-thickness surface-mount package, while the package UA is a three-pin ultra-miniature SIP for via mounting. All packages are lead-free, and the pin frames are 100% matte tin plated.
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连续工作
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在整个工作温度范围内稳定工作
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电池反接保护
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高可靠性
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下线工厂编程，具有最佳性能
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可靠的 EMC 性能
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高 ESD 保护级别
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无旁路电容的稳压器稳定性
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