Product Overview
The SL172x Series is a high-performance, low-power Hall effect switch sensor designed for space-constrained and battery-sensitive systems. It offers selectable magnetic field thresholds, operating frequencies, and package options to suit various applications. The sensor detects a single N-pole magnetic field, providing a low output when the N-pole magnetic field strength exceeds the operating point (BOP) and a high output when it drops below the release point (BRP). Featuring built-in temperature compensation and clock logic for stable operation, it consumes minimal current while delivering reliable single N-pole magnetic response. The sensor operates within a wide voltage range of 1.8V to 5.5V and is available in standard SOT-23-3L and TO-92S packages. Typical applications include switch detection in laptops and tablets, TWS earbuds, mobile phones, electronic locks, valve position sensing, and utility meters.
Product Attributes
- Brand: SLKormicro
- Certifications: RoHS compliant
- ESD Performance: HBM 8KV
Technical Specifications
| Model | Package | Pin Count | Magnetic Field Threshold (Bop) | Switching Frequency | Operating Temperature |
|---|---|---|---|---|---|
| SL1723TH | SOT-23-3L | 3 | -50 Gauss | 100Hz | -40~85 |
| SL1723SH | SOT-23-3L | 3 | -50 Gauss | 25Hz | -40~85 |
| SL1729TH | TO-92S | 3 | -50 Gauss | 100Hz | -40~85 |
| SL1729SH | TO-92S | 3 | -50 Gauss | 25Hz | -40~85 |
| Specification | Parameter | Value | Unit |
|---|---|---|---|
| General | Low Power (25Hz version) | 0.9 | uA@1.8V |
| Low Power (100Hz version) | 2.4 | uA@1.8V | |
| Wide Operating Voltage Range | 1.8 - 5.5 | V | |
| Output Type | CMOS Push-Pull | ||
| Electrical Parameters (Typical for SL172xTX @ TA=+25, VDD=1.8V) | Average Current (IDD(AVG)) | 2.4 | uA |
| Wake-up Time (TAWAKE) | 10 | s | |
| Electrical Parameters (Typical for SL172xSX @ TA=+25, VDD=1.8V) | Average Current (IDD(AVG)) | 0.9 | uA |
| Period (TPERIOD) | 40 | ms | |
| Magnetic Parameters (Typical for SL172xXH Series @ TA=+25, VDD=1.8V) | N-pole Operating Point (BOPN) | -50 | Gauss |
| N-pole Release Point (BRPN) | -35 | Gauss | |
| Hysteresis (BHY) | 15 | - | |
| Pin Definitions (SOT-23-3L) | VDD | 1 | Power Supply Input |
| OUTPUT | 2 | Output | |
| Pin Definitions (TO-92S) | VDD | 1 | Power Supply Input |
| OUTPUT | 3 | Output | |
| Absolute Maximum Ratings | Storage Temperature Range (TSTG) | -50 to +150 | C |
| Reference Operating Conditions | Ambient Temperature Range (TA) | -40 to 85 | C |
2504181640_Slkor-SL1729SH_C48392720.pdf
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