Product Overview
The LN245 is a non-polar Hall effect switch based on mixed-signal CMOS technology. It features advanced chopper-stabilized circuitry for accurate and stable magnetic switch points. The integrated clock mechanism provides timing for the Hall device and analog signal processing, enabling periodic 'sleep' mode for power saving and 'wake-up' for magnetic field detection. The output latching transistor is driven when the magnetic flux density exceeds the 'operate point' threshold or falls below the 'release point' threshold. During sleep cycles, the output transistor remains in its previous state. The output transistor latches ON in the presence of a South or North pole magnetic field and latches OFF in the absence of a magnetic field.
Typical Applications: Mobile phones, laptop computers, portable electronic devices, and more.
Product Attributes
- Brand: Natlinear
- Technology: Mixed-signal CMOS
- Switch Type: Non-polar Hall effect switch
- Output: Digital
- Sensitivity: High
- Stability: High
- Frequency: High
- Robustness: Strong against mechanical stress
Technical Specifications
| Parameter | Symbol | Min | Typical | Max | Unit | Conditions |
|---|---|---|---|---|---|---|
| Operating Temperature Range | TA | -40 | 85 | C | ||
| Operating Voltage Range | VDD | 1.65 | 6.0 | V | ||
| Supply Voltage | VDD | 1.8 | 6.0 | V | AC/DC Characteristics | |
| Average Supply Current | ISAVG | 100 | 350 | 1000 | uA | VDD=3V, Ta=25 |
| Average Current During Operating Time | ISOPAVG | 0.5 | 2.0 | 3.5 | mA | VDD=3V, Ta=25 |
| Peak Current During Operating Time | ISOPT | 4.5 | mA | VDD=3V, Ta=25 | ||
| Supply Current in Off State | ISSTB | 1 | 1.9 | 8 | uA | VDD=3V, Ta=25 |
| Output Saturation Voltage | VQSAT | 0.13 | 0.4 | V | IQ=1mA, VDD=3V, Ta=25 | |
| Output Leakage Current | IQLEAK | 0.01 | 1 | uA | VDD=3V, Ta=25 | |
| Output Rise Time | tr | 0.5 | 1 | us | RL=2.7K, CL=10pF, VDD=3V, Ta=25 | |
| Output Fall Time | tf | 0.1 | 1 | us | RL=2.7K, CL=10pF, VDD=3V, Ta=25 | |
| Operating Time | top | 55 | 85 | 120 | us | VDD=3V, Ta=25 |
| Standby Time | tstb | 250 | 350 | 550 | us | VDD=3V, Ta=25 |
| Duty Cycle | top/tstb | 20 | % | VDD=3V, Ta=25 | ||
| Chip Startup Time | tstu | 12 | 20 | us | VDD=3V, Ta=25 | |
| Operate Point (South Pole) | BOPS | 1.3 | 1.5 | 1.7 | mT | VDD=2.7V, Ta=25 |
| Operate Point (North Pole) | BOPN | -1.7 | -1.5 | -1.3 | mT | VDD=2.7V, Ta=25 |
| Release Point (South Pole) | BRPS | 0.9 | 1.1 | 1.3 | mT | VDD=2.7V, Ta=25 |
| Release Point (North Pole) | BRPN | -1.3 | -1.1 | -0.9 | mT | VDD=2.7V, Ta=25 |
| Hysteresis | BHYS | 0.2 | 0.4 | 0.6 | mT | VDD=2.7V, Ta=25 |
| Absolute Maximum Rating: Operating Voltage | VDD | -0.3 | 6.0 | V | ||
| Absolute Maximum Rating: Operating Current | IDD | -1 | 4.5 | mA | ||
| Absolute Maximum Rating: Output Voltage | VOUIT | -0.3 | 6.0 | V | ||
| Absolute Maximum Rating: Output Current | IOUT | -1 | 2 | mA | ||
| Absolute Maximum Rating: Storage Temperature | Tstg | -45 | 150 | |||
| Absolute Maximum Rating: Junction Temperature | 150 | |||||
| Absolute Maximum Rating: ESD Parameter | 4000 | V |
| Pin Number | Name | Definition |
|---|---|---|
| 1 | VDD | Power Supply Voltage |
| 2 | VOUT | Output |
| 3 | GND | Ground |
| Order Code | Package Code | Package Type | Marking |
|---|---|---|---|
| LN245MR | M | SOT-23-3 | 45XY |
Package Information
- SOT-23-3
1811151533_NATLINEAR-LN245MR_C177117.pdf
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