Product Overview
The AH1902 is a high-sensitivity, micropower Omnipolar Hall-effect switch IC designed for portable and battery-powered consumer electronics, as well as office equipment, home appliances, and industrial applications. It features internal pull-up and pull-down capability, an average supply current of 4.3A at 1.8V, and operates over a supply range of 1.6V to 3.6V. Its hibernating clocking system minimizes power consumption, and it is available in compact packages to save PCB space. The output activates with 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 | Symbol | Conditions | Min | Typ | Max | Unit |
| Supply Voltage | VDD | Operating | 1.6 | 3.6 | V | |
| Operating Temperature Range | TA | Operating | -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 (Awake) | IDD(awake) | TA = +25C, VDD = 3V | 2.1 | mA | ||
| Supply Current (Sleep) | 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 | ||
| Period | Tperiod | 50 | 100 | ms | ||
| Operation Point (South Pole) | Bops | VDD = 1.6V to 3.6V, TA = -40C to +85C | 21 | 33 | 48 | Gauss |
| Operation Point (North Pole) | Bopn | VDD = 1.6V to 3.6V, TA = -40C to +85C | -48 | -33 | -21 | Gauss |
| Release Point (South Pole) | Brps | VDD = 1.6V to 3.6V, TA = -40C to +85C | 9 | 23 | 38 | Gauss |
| Release Point (North Pole) | Brpn | VDD = 1.6V to 3.6V, TA = -40C to +85C | -38 | -23 | -9 | Gauss |
| Hysteresis | Bhy | 10 | Gauss |
2412251152_DIODES-AH1902-FT4-7_C842195.pdf
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