Image shown is for reference only. Actual package may vary. Refer to the product data sheet for package details.
SIP-3-Ammo-Pack-3D-image.png
Image shown is for reference only. Actual package may vary. Refer to the product data sheet for package details.
SIP-3-3D-image.png
Image shown is for reference only. Actual package may vary. Refer to the product data sheet for package details.
SOT23.pngNRND = Not Recommended for New Design
28V Open-Drain Hall Effect Latch
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The AH3777 is a high voltage low sensitivity Hall Effect latch IC designed for commutation of brushless DC motor, flow meters, linear encoders and position sensors in industrial and consumer home appliance and personal care applications. To support wide range of demanding applications, the design has been optimized to operate over the supply range of 3.0V to 28V. With chopper stabilized architecture and an internal bandgap regulator to provide temperature compensated supply for internal circuits, the AH3777 provides a reliable solution over the whole operating range. For robustness and protection, the device has a reverse blocking diode with a Zener clamp on the supply. The output has a current limit and a Zener clamp.
The single open drain output can be switched on with South pole of sufficient strength and switched off with North pole of sufficient strength. When the magnetic flux density (B) perpendicular to the package is larger than the operate point (Bop) the output is switched on (pulled low). The output is held latched until magnetic flux density reverses and becomes lower than the release point (Brp).
The AH3777 is available in industry standard SOT23 and SIP-3 packages.
| Active Output State (B > Bop) | Low |
|---|---|
| AEC Qualified | No |
| Compliance (Only Automotive supports PPAP) | No |
| Average Supply Current (µA) | 3 |
| Average Supply Current (mA) | 3 |
| Compliance (Only Automotive supports PPAP) | Standard |
| Compliance(Only Automotive supports PPAP) | Standard |
| Inactive Output State (B < Brp) | High-Z |
| Max Operating Point Bop (Bops +ve/ Bopn -ve) (Gauss) | 170 |
| Max Release Point Brp (Brps +ve/ Brpn -ve) (Gauss) | -110 |
| Min Operating Point Bop (Bops +ve/ Bopn -ve) (Gauss) | 110 |
| Min Release Point Brp (Brps +ve/ Brpn -ve) (Gauss) | -170 |
| Operating Ambient Temperature (°C) | -40 to 125 |
| Operating Ambient Temperature (°C) | -40 to 125 |
| Operating Point Bop (Bops +ve/ Bopn -ve) Gauss (Max) | 170 |
| Operating Point Bop (Bops +ve/ Bopn -ve) Gauss (Min) | 110 |
| Operating Point Bop (Bops +ve/ Bopn -ve) Gauss (Typ) | 140 |
| Operating Voltage (V) | 3 to 28 |
| Operating Voltage (V) | 3 to 28 |
| Output Current Capability (mA) | 30 |
| Output Current Capability (mA) | 30 |
| Output Type | Open Drain |
| Outputs | Single |
| AEC Qualified | No |
| Release Point Brp (Brps +ve/Brpn -ve) Gauss (Max) | -110 |
| Release Point Brp (Brps +ve/Brpn -ve) Gauss (Min) | -170 |
| Release Point Brp (Brps +ve/Brpn -ve) Gauss (Typ) | -140 |
| Typ Operating Point Bop (Bops +ve/ Bopn -ve) (Gauss) | 140 |
| Typ Release Point Brp (Brps +ve/ Brpn -ve) (Gauss) | -140 |
| Type | Latch |
A PCN may only apply to specific orderable part numbers in this datasheet. Please refer to the corresponding PCN to see the exact orderable part number(s) affected.
| PCN # | Issue Date | Implementation Date | Subject |
|---|---|---|---|
| PCN-2672 | 2024-03-11 | 2024-09-07 | Device End of Life (EOL) |
