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Specifications
Operation Points:
5mT
Release Points:
-5mT
Operating Temperature:
-20℃~+85℃
Voltage - Supply:
3.5V~16V
Mfr. Part #:
AH277AZ4-AG1
Package:
TO-94
Key Attributes
Model Number:
AH277AZ4-AG1
Product Description
Product Overview
The AH277A is an integrated Hall effect latch with complementary open-collector output drivers, designed for electronic commutation in brushless DC motor applications. It features an on-chip Hall sensor, amplifier, Schmitt trigger for noise rejection, and temperature compensation. The device provides two complementary outputs (DO and DOB) that switch based on magnetic flux density, with hysteresis for reliable operation. It includes an internal band-gap regulator for bias voltage and offers reversed supply voltage protection.
Product Attributes
- Brand: BCD Semiconductor Manufacturing Limited
- Package Type: TO-94 (SIP-4L)
- Certifications: RoHS compliant (indicated by "E1" suffix)
- Green Package Available (indicated by "G1" suffix)
Technical Specifications
| Part Number | Circuit Type | Package | Magnetic Characteristics (Grade) | Lead Free | Green | Packing Type |
| AH277AZ4-AE1 | AH277A | Z4: TO-94 (SIP-4L) | A: 10 to 50 Gauss | E1: Lead Free | Bulk | |
| AH277AZ4-AG1 | AH277A | Z4: TO-94 (SIP-4L) | A: 10 to 50 Gauss | G1: Green | Bulk | |
| AH277AZ4-BE1 | AH277A | Z4: TO-94 (SIP-4L) | B: 5 to 70 Gauss | E1: Lead Free | Bulk | |
| AH277AZ4-BG1 | AH277A | Z4: TO-94 (SIP-4L) | B: 5 to 70 Gauss | G1: Green | Bulk | |
| AH277AZ4-CE1 | AH277A | Z4: TO-94 (SIP-4L) | C: 100 Gauss | E1: Lead Free | Bulk | |
| AH277AZ4-CG1 | AH277A | Z4: TO-94 (SIP-4L) | C: 100 Gauss | G1: Green | Bulk |
| Parameter | Symbol | Value | Unit | Notes |
| Supply Voltage | VCC | 3.5 to 16 | V | Recommended Operating Conditions |
| Reverse Protection Voltage | VRCC | -20 | V | Absolute Maximum Ratings |
| Operating Temperature | TA | -20 to 85 | C | |
| Output Sink Current (avg) | IO | 400 | mA | |
| Output Current (Hold) | IO | 600 | mA | |
| Output Current (Peak, start up) | IO | 800 | mA | |
| Power Dissipation | PD | 550 | mW | Absolute Maximum Ratings |
| Thermal Resistance (Die to atmosphere) | JA | 227 | C/W | |
| Thermal Resistance (Die to package case) | JC | 49 | C/W | |
| Storage Temperature | TSTG | -50 to 150 | C | |
| ESD Rating (Machine Model) | 300 | V | ||
| ESD Rating (Human Body Model) | 2000 | V | ||
| Output Saturation Voltage | VSAT | 0.35 to 0.6 | V | VCC=3.5V, IO=400mA |
| Output Leakage Current | IOL | 0.1 to 10 | A | VCE=16V |
| Supply Current | ICC | 12 to 16 | mA | VCC=16V, Output Open |
| Output Rise Time | tr | 3.0 to 10 | s | RL=820, CL=20pF |
| Output Fall Time | tf | 0.3 to 1.5 | s | RL=820, CL=20pF |
| Switch Time Differential | t | 3.0 to 10 | s | RL=820, CL=20pF |
| Output Zener Breakdown Voltage | VZ | 55 | V | |
| BOP (Grade A) | 10 to 30 | Gauss | ||
| BOP (Grade B) | 5 to 70 | Gauss | ||
| BOP (Grade C) | 100 | Gauss | ||
| BRP (Grade A) | -50 to -10 | Gauss | ||
| BRP (Grade B) | -70 to -5 | Gauss | ||
| BRP (Grade C) | -100 | Gauss | ||
| Hysteresis | BHYS | 60 | Gauss |
Applications
- Dual-Coil Brushless DC Motor
- Dual-Coil Brushless DC Fan
- Revolution Counting
- Speed Measurement
2210281000_DIODES-AH277AZ4-AG1_C842060.pdf
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