Product Overview
The AH1902 is a high-sensitivity, micropower Omnipolar Hall-effect switch IC designed for portable and battery-powered consumer electronics, office equipment, home appliances, and industrial applications. It features internal pull-up and pull-down capability, a low average supply current of 4.3A at 1.8V, and operates across a supply range of 1.6V to 3.6V. Its hibernating clocking system minimizes power consumption, making it ideal for space-constrained designs. The output is activated by either a north or south magnetic pole, turning on when the magnetic flux density exceeds the operate point (Bop) and holding until it drops below the release point (Brp).
Product Attributes
- Brand: Diodes Incorporated
- Certifications: Totally Lead-Free & Fully RoHS Compliant, Halogen and Antimony Free (Green Device)
Technical Specifications
| Parameter | Conditions | Min | Typ | Max | Unit | Notes |
| Supply Voltage (VDD) | Operating | 1.6 | 3.6 | V | ||
| Operating Temperature Range | -40 | +85 | C | |||
| Output Low Voltage (VOL) | IOUT = 1mA | 0.1 | 0.2 | V | ||
| Output High Voltage (VOH) | IOUT = -1mA | VDD-0.2 | VDD-0.1 | V | ||
| Output Leakage Current (Ioff) | VOUT = 3.6V, Output off | < 0.1 | 1 | A | ||
| Supply Current (IDD(awake)) | TA = +25C, VDD = 3V | 2.1 | mA | |||
| Supply Current (IDD(sleep)) | TA = +25C, VDD = 3V | 2.5 | A | |||
| Average Supply Current (IDD(avg)) | TA = +25C, VDD = 1.8V | 4.3 | 8 | A | ||
| Average Supply Current (IDD(avg)) | TA = +25C, VDD = 3.6V | 7.2 | 13 | A | ||
| Awake Time (Tawake) | 50 | 100 | s | 8 | ||
| Period (Tperiod) | 50 | 100 | ms | 8 | ||
| D.C. Duty Cycle | 0.1 | % | ||||
| Operation Point (Bops, south pole) | VDD = 1.6V to 3.6V, TA = -40C to +85C | 21 | 33 | 48 | Gauss | 9, 10 |
| Operation Point (Bopn, north pole) | VDD = 1.6V to 3.6V, TA = -40C to +85C | -48 | -33 | -21 | Gauss | 9, 10 |
| Release Point (Brps, south pole) | VDD = 1.6V to 3.6V, TA = -40C to +85C | 9 | 23 | 38 | Gauss | 9, 10 |
| Release Point (Brpn, north pole) | VDD = 1.6V to 3.6V, TA = -40C to +85C | -38 | -23 | -9 | Gauss | 9, 10 |
| Hysteresis (Bhy) | 10 |
1811061530_DIODES-AH1902-Z-7_C239188.pdf
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