A1203LLHLT-T Bipolar Switch：Pinout, Datasheet, Function

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The A1203LLHLT-T comes from Continuous-Time Bipolar Switch A120x Family.

The Allegro™ A1202 and A1203 Hall-effect bipolar switches are next-generation replacements and extensions of the popular Allegro A3133 and A3132 bipolar switch product line. Overall, the A120x family, produced with BiCMOS technology, consists of continuous-time devices that feature fast power-on time and low-noise operation.

Allegro MicroSystems A1203LLHLT-T technical specifications, attributes, parameters and parts with similar specifications to Allegro MicroSystems A1203LLHLT-T.

• AEC-Q100 automotive qualified

• Continuous-time operation

□ Fast power-on time

□ Low noise

• Stable operation over the full operating temperature range

• Reverse-battery protection

• Solid-state reliability

• Factory-programmed at end-of-line for optimum performance

• Robust EMC performance

• High ESD rating

• Regulator stability without a bypass capacitor

Bipolar Device Switching

The devices of the A120x family provide highly sensitive switching for applications using magnetic fields of alternating polarities, such as ring magnets. There are three switching modes for bipolar devices, referred to as latch, unipolar switch, and negative switch. Mode is determined by the switch point characteristics of the individual device. The characteristic hysteresis, BHYS, of the device, is the difference in the relative magnetic strength and polarity of the switch points of the device.

Continuous-Time Benefits

Continuous-time devices, such as the A120x family, offer the fastest available power-on settling time and frequency response. Due to offsets generated during the IC packaging process, continuous-time devices typically require programming after packaging to tighten magnetic parameter distributions.

Additional Application Information

Extensive applications information for Hall-effect devices is available in:

• Hall-Effect IC Applications Guide, Application Note 27701

• Hall-Effect Devices: Gluing, Potting, Encapsulating, Lead Welding and Lead Forming, Application Note 27703.1

• Soldering Methods for Allegro’s Products – SMT and ThroughHole, Application Note 26009

As a leading company in the development, manufacture and market of high-performance semiconductors, Allegro Micro Systems, LLC provides high-growth applications for the automotive market and also stays focus on consumer/communications, automation and industrial solutions. Headquartered in Worcester, Massachusetts (USA) Allegro locates its design, applications and sales support centres worldwide.

Download datasheets and manufacturer documentation for Allegro MicroSystems A1203LLHLT-T.