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Diodes Incorporated AH5792-YG-13
- Part No.:
- AH5792-YG-13
- Manufacturer:
- Diodes Incorporated
- Category:
- Motor Drivers, Controllers
- Package:
- SOT-89-5/6
- Datasheet:
-
AH5792-YG-13.pdf
- Description:
- IC MOTOR DRIVER 1.8V-5V SOT89-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,050
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Product details
Overview
AH5792-YG-13 from Diodes Incorporated is a single-phase Hall-effect latch smart fan motor controller in SOT89-5L package, integrating full-bridge driver, Hall sensor amplifier, rotor lock detection, and open-drain tachometer (FG) output. It operates from 1.8V to 5.0V, delivers up to 500mA peak output current, and generates FG pulses at half the magnetic pole transition frequency-designed for ultra-thin cooling fans and micro-vibration motors in space-constrained 3.3V/5V systems.
For engineers reviewing the AH5792-YG-13 datasheet, AH5792-YG-13 pinout, AH5792-YG-13 application, or AH5792-YG-13 equivalent, key selection considerations include its bidirectional full-bridge topology, lock-detection self-restart behavior, low-voltage startup capability, FG timing relationship to magnetic transitions, and dual-package availability (SOT553/SOT89-5L) with distinct thermal performance curves.
Technical Context
The AH5792 implements a Hall-sensor-based commutation logic block that drives complementary O1/O2 outputs to energize a single-coil BLDC motor. Its internal lock detector monitors stalled rotor conditions by analyzing Hall signal persistence and triggers automatic restart with ramp-up timing dependent on motor inertia.
The FG output is an open-drain frequency generator synchronized to magnetic pole transitions: each FG pulse corresponds to two magnetic edge events (i.e., FG = ½ × magnetic change frequency), enabling accurate RPM monitoring via external pull-up resistor (e.g., 10kΩ to 5V). No external timing capacitor is required for basic operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Vdd Operating Range | 1.8V to 5.0V - enables direct interface with 3.3V and 5V logic rails without level-shifting |
| Peak Output Current | 500mA (SOT89-5L) - supports higher-torque micro-fans and vibration motors vs. SOT553 variant |
| FG Output Ratio | ½ × magnetic change frequency - provides deterministic RPM scaling for hardware monitoring ICs |
| Bop / Brp | 10–50G / –50 to –10G - wide magnetic hysteresis (60G typ.) ensures robust commutation under mechanical vibration |
| Operating Temp | –40°C to +100°C - validated for industrial-grade cooling fan environments including enclosed enclosures |
| Power Dissipation | 800mW @ 25°C (SOT89-5L) - enables continuous drive in compact thermal footprints with derating above 25°C |
| Supply Current | 3.5–5mA (no load) - minimizes standby power draw in always-on thermal management subsystems |
Pinout & Package
Package: SOT89-5L - thermally enhanced 5-pin small-outline transistor package with exposed thermal pad; footprint optimized for high-power-density fan control in <1.5mm profile applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Vdd | Positive supply input | Accepts 1.8–5.0V; reverse-polarity protection diode required externally per datasheet Note 4 |
| O1 | Full-bridge output 1 | Sinks or sources current to drive one side of single-coil motor; complements O2 for bidirectional rotation |
| Vss | Ground reference | Common return path for Vdd, O1, O2, and FG; must be low-impedance for stable Hall amplification |
| FG | Open-drain tachometer output | Drains current only; requires external pull-up to system voltage; toggles at half magnetic transition rate |
| O2 | Full-bridge output 2 | Complementary to O1; enables full-wave excitation of single-coil motor without external H-bridge |
Key Features
| Feature | Design Value |
|---|---|
| Rotor lock detection & auto-restart | Prevents coil burnout during stall by halting drive, detecting persistent Hall state, then ramping motor from zero speed |
| No external timing capacitor | Reduces BOM count and PCB area-commutation timing derived entirely from internal Hall signal processing |
| Low-voltage startup (1.8V) | Enables integration into battery-powered or low-dropout regulator-fed systems where rail collapse may occur |
| Green packaging | Fully RoHS 3 compliant, halogen- and antimony-free molding compound meeting Diodes' "Green" definition (<900ppm Br/Cl, <1000ppm Sb) |
| Dual-package support | SOT553 (3000/reel) and SOT89-5L (2500/reel) allow trade-off between board space (SOT553) and thermal/power (SOT89-5L) |
Applications
| Ultra-Thin Laptop Cooling Fans | Smartphone Haptic Vibration Motors |
|---|---|
|
Use Scenario: Driving eight-pole 5V BLDC fans in sub-12mm-height laptop chassis where airflow and acoustic noise must be tightly controlled. IC Role / Device Role / Timing Role: Single-chip motor controller providing Hall-based commutation, FG feedback for closed-loop speed regulation, and lock protection during dust ingress. Use Value: Eliminates need for discrete H-bridge + Hall amplifier + watchdog circuit, reducing component count by ≥4 while maintaining 100% duty-cycle capability. |
Use Scenario: Powering micro-vibration motors in mobile devices requiring precise start/stop response and low quiescent current during idle. IC Role / Device Role / Timing Role: Smart driver with integrated Hall sensing and automatic restart logic-enables immediate tactile feedback without MCU-level timing intervention. Use Value: Achieves <5ms wake-from-idle response using 1.8V startup and no external timing components, extending battery life in always-listening UI modes. |
| Industrial Sensor-Cooling Modules | Medical Handheld Device Fans |
|
Use Scenario: Thermal management for optical sensors in factory automation cameras operating continuously in ambient temperatures up to +85°C. IC Role / Device Role / Timing Role: Fan controller with extended temperature range (–40°C to +100°C) and FG output tied to FPGA-based thermal monitoring logic. Use Value: Delivers 500mA peak drive in SOT89-5L package with 800mW dissipation margin at 70°C ambient-enabling fan operation without heatsink or forced air. |
Use Scenario: Silent, reliable cooling for battery-powered diagnostic handhelds used in clinical settings where EMI and audible noise are strictly limited. IC Role / Device Role / Timing Role: Low-noise BLDC driver with built-in rotor lock protection-prevents motor failure if fan blades contact housing during drop events. Use Value: Self-restart behavior avoids permanent shutdown after mechanical obstruction, ensuring uninterrupted device operation during critical patient measurements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar single-phase Hall-effect fan motor controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AH9485 | Higher Vdd max (6.5V), lower Bop (8G typ.), no FG output - uses analog speed control instead of digital tach feedback | Targeted at cost-sensitive 5V fans where RPM monitoring is unnecessary; lacks lock-detection auto-restart | Select when tachometer output is not required and design tolerates wider magnetic sensitivity variation |
| ZXBM5210 | Integrated Zener clamp on Vdd, higher IO(PEAK) (600mA), but requires external timing capacitor for lock detection timeout | Used in automotive cabin fans where reverse-polarity tolerance is mandatory; FG output not implemented | Choose only if reverse-voltage protection is needed at chip level and external capacitor placement is acceptable |
Compared with AH9485 and ZXBM5210, AH5792-YG-13 uniquely combines FG-based RPM monitoring, lock-detection auto-restart, and capacitor-free operation in a thermally capable SOT89-5L package-making it optimal for space-constrained, feedback-critical cooling and haptic applications.
Availability
AH5792-YG-13 is available at Aetrix Electronics and suitable for ultra-thin laptop cooling fans, smartphone haptic vibration motors, and industrial sensor-cooling modules requiring stable component supply, long-lifecycle availability, and RoHS 3-compliant green packaging.
Supply support for AH5792-YG-13 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability power management, signal integrity, and motion control solutions for industrial, computing, and consumer markets.
AH5792 belongs to Diodes' Smart Motor Driver product line-engineered specifically for single-coil BLDC fan and haptic motor control with integrated Hall sensing, lock protection, and tach feedback to reduce system-level complexity.
FAQ
What is the relationship between FG output frequency and motor RPM?
The FG output toggles at half the magnetic pole transition frequency. For an eight-pole fan (4 N-S pairs per revolution), one full rotation produces 4 magnetic transitions, so FG frequency = (RPM × 4) ÷ 60 ÷ 2 = RPM ÷ 30. Thus, 3000 RPM yields 100Hz FG signal-enabling direct RPM calculation without division in firmware.
How does rotor lock detection trigger automatic restart?
Lock detection activates when Hall sensor output remains static beyond a fixed internal timeout. The IC then disables both O1 and O2, waits briefly, then applies alternating drive pulses to O1/O2 with increasing duty cycle until Hall signal resumes-effectively "jogging" the rotor free before resuming normal commutation.
Can AH5792-YG-13 drive a 12V fan?
No. Absolute maximum Vdd is 6V, and recommended operating range is 1.8V–5.0V. Driving a 12V fan would exceed voltage ratings and damage the device. For 12V fans, use a compatible gate driver or higher-voltage motor controller such as the DIODES ZXBM5210 or ON Semiconductor LV8548MC.
Is reverse-polarity protection built-in?
No. The datasheet explicitly warns that reverse connection of the power supply will break the device. External protection is mandatory: a series Schottky diode (D1) from input to Vdd, plus a Zener clamp (Dz) and bypass capacitor (C1) between Vdd and Vss, as shown in Figure 1 of DS31641 Rev. 8-3.
AH5792-YG-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOT-89-5/6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Motor Type - Stepper:
- -
- Motor Type - AC, DC:
- Brushless DC (BLDC)
- Function:
- Driver - Fully Integrated, Control and Power Stage
- Output Configuration:
- Half Bridge (2)
- Interface:
- On/Off
- Technology:
- Power MOSFET
- Step Resolution:
- -
- Applications:
- General Purpose
- Current - Output:
- 148mA
- Voltage - Supply:
- 1.8V ~ 5V
- Voltage - Load:
- 1.8V ~ 5V
- Operating Temperature:
- -40°C ~ 100°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-89-5
AH5792-YG-13 FAQ
1.How can I place an order for AH5792-YG-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for AH5792-YG-13 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for AH5792-YG-13 reliable?
The price and inventory of AH5792-YG-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AH5792-YG-13 is usually 5 days.
3.What payment methods are accepted for AH5792-YG-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AH5792-YG-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AH5792-YG-13?
AH5792-YG-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AH5792-YG-13 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for AH5792-YG-13?
For technical support, including AH5792-YG-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AH5792-YG-13 requirements.
6.How does Aetrix verify that AH5792-YG-13 is sourced from the original manufacturer or authorized distributors?
All AH5792-YG-13 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that AH5792-YG-13 meets industry standards.
7.What is the process for return or replacement of AH5792-YG-13?
All AH5792-YG-13 units undergo pre-shipment inspection (PSI). If there is an issue with AH5792-YG-13, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The AH5792-YG-13 part is unused and in its original packaging.
Return procedure for AH5792-YG-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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