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A1220LLHLT-T
HALL EFFECT LATCH SWITCH SOT23W 3-24V
Allegro MicroSystems
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Design a Custom BoardAbout This Component
Chopper-stabilized Hall-effect sensor IC that functions as a magnetic switch latch, outputting on with south pole and off with north pole. Features integrated voltage regulator (3-24V), 25mA open-drain output with short-circuit protection, and dynamic offset cancellation for superior temperature stability to 150°C. Automotive-qualified (AEC-Q100) for motor commutation, position sensing, and power actuation applications.
Package: SOT-23W · 3 pins
Why does this need a breakout?
SOT-23's tiny 0.95mm pin pitch and compact form factor make hand-soldering tedious and prone to bridging errors. A breakout board breaks out the three pins to standard 0.1" spacing for breadboard prototyping, eliminating the need for specialized soldering equipment and enabling fast circuit iteration with transistors, diodes, and small-signal components.
Specifications
ELECTRICAL CHARACTERISTICS
| Manufacturer | Allegro MicroSystems |
| Part Number | A1220LLHLT-T |
| Package | SOT-23W |
| Pin Count | 3 |
| Current - Output (Max) | 25mA |
| Current - Supply (Max) | 4mA |
| Output Type | Open Drain |
| Voltage - Supply | 3V ~ 24V |
What's Included
BILL OF MATERIALS
- 1x A1220LLHLT-T soldered onto breakout PCB
- Pin headers pre-soldered (2.54mm / 0.1" pitch)
- All IC pins broken out to 2.54mm headers
Breakout Board Design
PCB SPECIFICATIONS
WIDTH
< 0.9" (straddles breadboard)
PITCH
2.54mm standard
SOLDER
Lead-free, reflow assembled
FINISH
FR4, lead-free HASL