AH3724A-SA-7
Hall-effect Latch ICThe AH3724A-SA-7 is a hall-effect latch ic from Diodes Incorporated. View the full AH3724A-SA-7 datasheet below including key specifications, electrical characteristics, absolute maximum ratings.
Manufacturer
Diodes Incorporated
Category
Hall-effect Latch IC
Package
TO-236-3, SC-59, SOT-23-3
Key Specifications
| Parameter | Value |
|---|---|
| Current - Output (Max) | 55mA |
| Supply Current (Max) | 5mA |
| Features | Temperature Compensated |
| Function | Latch, Bipolar Switch |
| Mounting Type | Surface Mount |
| Operating Temperature | -40°C ~ 125°C (TA) |
| Output Type | Push-Pull |
| Package / Case | TO-236-3, SC-59, SOT-23-3 |
| Polarization | North Pole, South Pole |
| Sensing Range | 6mT Trip, -6mT Release |
| Supplier Device Package | SOT-23 (Type S) |
| Diode Technology | Hall Effect |
| Test Condition | -40°C ~ 125°C |
| Supply Voltage | 3V ~ 28V |
Overview
Part: AH3722A/AH3724A — Diodes Incorporated
Type: High-Voltage, High-Sensitivity Hall-Effect Latch IC
Description: A high-voltage, high-sensitivity Hall-effect latch IC with internal pullup resistor, designed for commutation of brushless DC motors, flow meters, linear encoders, and position sensors, operating from 3.0V to 28V.
Operating Conditions:
- Supply voltage: 3.0 to 28 V
- Operating temperature: -40 to +125 °C
Absolute Maximum Ratings:
- Max supply voltage: 32 V
- Max continuous current: 60 mA
- Max junction/storage temperature: +150 °C (Junction), -65 to +165 °C (Storage)
Key Specs:
- Output On Voltage: 0.2 V (Typ) at I OUT = 20mA, B > B OP
- Supply Current: 3 mA (Typ) at Output open, T A = +25 °C
- Internal Pullup Resistance: 14 kΩ (Typ)
- Device Startup Time: 10 μs (Typ)
- Output Current Limit: 30 mA (Min) to 55 mA (Max)
- AH3724A Operation Point (B OP): 40 Gauss (Typ)
- AH3724A Release Point (B RP): -40 Gauss (Typ)
- ESD HBM: 8 kV
Features:
- Bipolar Latch (South Pole: On, North Pole: Off)
- 3.0V to 28V Operating Voltage Range
- High Sensitivity: BOP and BRP of 25G to 40G and -25G to -40G Typical
- Internally Pullup Resistor on the Output Pin
- Resistant to Physical Stress
- Output Overcurrent Limit
- Chopper Stabilized Design Provides Superior Temperature Stability
- Minimal Switch Point Drift
- Enhanced Immunity to Stress
- Good RF Noise Immunity
- Reverse Blocking Diode and Zener Clamp on Supply
- -40 °C to +125°C Operating Temperature
- High ESD HBM: 8kV
- Industry Standard SC59, SOT23 (Type S), SIP-3 (Ammo Pack) and SIP-3 (Bulk Pack) Packages
- Totally Lead-Free & Fully RoHS Compliant
- Halogen and Antimony Free. 'Green' Device
Applications:
- Brushless DC motor commutation
- Revolution per minute (RPM) measurement
- Flow meters
- Angular and linear encoders and position sensors
- Contactless commutation, speed measurement and angular position sensing/indexing in consumer home appliances, office equipment and industrial applications
Package:
- SC59
- SOT23 (Type S)
- SIP-3 (Ammo Pack)
- SIP-3 (Bulk Pack)
Features
- Bipolar Latch (South Pole: On, North Pole: Off)
- 3.0V to 28V Operating Voltage Range
- High Sensitivity: BOP and BRP of 25G to 40G and -25G to -40G Typical
- Internally Pullup Resistor on the Output Pin
- Resistant to Physical Stress
- Output Overcurrent Limit
- Chopper Stabilized Design Provides
- Superior Temperature Stability
- Minimal Switch Point Drift
- Enhanced Immunity to Stress
- Good RF Noise Immunity
- Reverse Blocking Diode and Zener Clamp on Supply
- -40 C to +125°C Operating Temperature
- High ESD HBM: 8kV
- Industry Standard SC59, SOT23 (Type S), SIP-3 (Ammo Pack) and SIP-3 (Bulk Pack) Packages
- Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
- Halogen and Antimony Free. 'Green' Device (Note 3)
- For automotive applications requiring specific change control (i.e. parts qualified to AEC-Q100/101/104/200, PPAP capable, and manufactured in IATF 16949 certified facilities), please contact us or your local Diodes representative.
https://www.diodes.com/quality/product-definitions/
Notes:
- No purposely added lead. Fully EU Directive 2002/95/EC (RoHS), 2011/65/EU (RoHS 2) & 2015/863/EU (RoHS 3) compliant.
- See https://www.diodes.com/quality/lead-free/ for more information about Diodes Incorporated's definitions of Halogen- and Antimony-free, "Green" and Lead-free.
- Halogen- and Antimony-free "Green' products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and <1000ppm antimony compounds.
Applications
- Brushless DC motor commutation
- Revolution per minute (RPM) measurement
- Flow meters
- Angular and linear encoders and position sensors
- Contactless commutation, speed measurement and angular position sensing/indexing in consumer home appliances, office equipment and industrial applications
Pin Configuration
SC59 and SOT23 (Type S)
(Top View)
SIP-3 (Ammo Pack) and SIP-3 (Bulk Pack)
Electrical Characteristics
| Symbol | Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| V OUT_ON | Output On Voltage | I OUT = 20mA, B > B OP | - | 0.2 | 0.4 | V |
| I OUT_OFF | Output Leakage Current | V OUT = 28V, B < B RP , output off | - | < 0.1 | 10 | μA |
| I DD | Supply Current | Output open, T A = +25 C | - | 3 | 4 | mA |
| I DD | Supply Current | Output open, T A = -40°C to +125°C | - | - | 5 | mA |
| R PU | Internal Pullup Resistance | T A = -40°C to 125°C | 10 | 14 | 18 | kΩ |
| t ST | Device Startup Time | V DD ≥ 3V, B > B OP or B < B RP (Note 6) | - | 10 | - | μs |
| f C | Chopping Frequency | V DD ≥ 3V (Note 8) | - | 500 | - | kHz |
| t D | The Time Delay from Magnetic Threshold Reached to the Start of the Output Rise or Fall | (Note 8) | - | 4 | - | μs |
| t R | Output Rising Time (External Pullup Resistor R L and Load Capacitance Dependent) | R L = 1kΩ, C L = 20pF (Note 8) | - | 0.2 | 1 | μs |
| t F | Output Falling Time (Internal Switch Resistance and Load Capacitance Dependent) | R L = 1kΩ, C L = 20pF (Note 8) | - | 0.1 | 1 | μs |
| I OCL | Output Current Limit | B > B OP (Note 9) | 30 | - | 55 | mA |
| V Z | Zener Clamp Voltage | I DD = 5mA, T A = +25°C | 28 | - | - | V |
Absolute Maximum Ratings
| Symbol | Characteristic | Characteristic | Value | Unit |
|---|---|---|---|---|
| V DD | Supply Voltage (Note 5) | Supply Voltage (Note 5) | 32 | V |
| V OUT_MAX | Output Pin Off Voltage (Note 5) | Output Pin Off Voltage (Note 5) | 32 | V |
| I OUT | Continuous Output Current | Continuous Output Current | 60 | mA |
| I OUT_R | Reverse Output Current | Reverse Output Current | -50 | mA |
| B | Magnetic Flux Density | Magnetic Flux Density | Unlimited | Unlimited |
| P D | Package Power Dissipation | SIP-3 (Ammo Pack) SIP-3 (Bulk Pack) | 550 | mW |
| P D | Package Power Dissipation | SOT23 (Type S) | 230 | mW |
| T S | Storage Temperature Range | Storage Temperature Range | -65 to +165 | °C |
| T J | Maximum Junction Temperature | Maximum Junction Temperature | +150 | °C |
| ESD HBM | Electrostatic Discharge Withstand Capability-Human Body Model | Electrostatic Discharge Withstand Capability-Human Body Model | 8 | kV |
Recommended Operating Conditions
| Symbol | Parameter | Conditions | Rating | Unit |
|---|---|---|---|---|
| V DD | Supply Voltage | Supply voltage, between V DD and GND pins | 3.0 to 28 | V |
| T A | Operating Temperature Range | Operating ambient temperature range | -40 to +125 | °C |
Package Information
Please see http://www.diodes.com/package-outlines.html for the latest version.
Related Variants
The following components are covered by the same datasheet.
| Part Number | Manufacturer | Package |
|---|---|---|
| AH3722A | Diodes Incorporated | — |
| AH3724A | Diodes Incorporated | — |
| AH3724A-P-B | Diodes Incorporated | — |
| AH3724A-W-7 | Diodes Incorporated | TO-236-3, SC-59, SOT-23-3 |
| AH372XA | Diodes Incorporated | — |
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