Hall Effect Switch IC DIODES AH1903-FA-7 with Low Average Supply Current and Flexible Mode Selection
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Product Description
Product Overview
The AH1903 is a high-sensitivity, micropower Hall-effect switch IC offering selectable Omnipolar or Unipolar operation. Designed for battery-powered devices and office/home appliances, it features a low average supply current of 4.3A at 1.8V and operates across a wide supply range of 1.6V to 3.6V. Its hibernating clocking system minimizes power consumption, and it is available in a compact X1-DFN1216-4 package. The Unipolar/Omnipolar mode can be selected via the SEL pin, allowing for flexibility in application design without external components.
Product Attributes
- Brand: Diodes Incorporated
- Product Name: AH1903
- Package Type: X1-DFN1216-4
- Certifications: Totally Lead-Free & Fully RoHS Compliant, Halogen and Antimony Free (Green Device)
- Operating Temperature: -40C to +85C
Technical Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
| Electrical Characteristics | Output Low Voltage (VOL) @ IOUT = 1mA | 0.1 | 0.2 | V | |
| Output High Voltage (VOH) @ IOUT = -1mA | VDD - 0.2 | VDD - 0.1 | V | ||
| SEL Low (Omnipolar) | 0 | 0.5 | V | ||
| SEL High (Unipolar) | 1.4 | 3.6 | V | ||
| Average Supply Current @ VDD = 1.8V | TA = +25C | 4.3 | 8 | A | |
| Magnetic Characteristics (Unipolar Operation) | Operation Point (Bops) (South Pole to Part Marking Side) | 23 | 33 | 47 | Gauss |
| Release Point (Brps) (South Pole to Part Marking Side) | 12 | 23 | 35 | Gauss | |
| Hysteresis (Bhy) | 10 | Gauss | |||
| Conditions | VDD = 1.6V to 3.6V, TA = -40C to +85C | ||||
| Magnetic Characteristics (Omnipolar Operation) | Operation Point (Bops) (South Pole to Part Marking Side) | 23 | 33 | 47 | Gauss |
| Operation Point (Bopn) (North Pole to Part Marking Side) | -47 | -33 | -23 | Gauss | |
| Release Point (Brps) (South Pole to Part Marking Side) | 12 | 23 | 35 | Gauss | |
| Release Point (Brpn) (North Pole to Part Marking Side) | -35 | -23 | -12 | Gauss | |
| Hysteresis (Bhy) | 10 | Gauss | |||
| Conditions | VDD = 1.6V to 3.6V, TA = -40C to +85C | ||||
| Absolute Maximum Ratings | Supply Voltage (VDD) | 6 | V | ||
| Recommended Operating Conditions | Supply Voltage (VDD) | 1.6 | 3.6 | V |
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