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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Motor Drivers, Controllers

Diodes Incorporated AM4962GHTR-G1

Name: AM4962GHTR-G1
Brand: Diodes Incorporated
SKU: AM4962GHTR-G1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AM4962GHTR-G1

Manufacturer:: Diodes Incorporated

Category:: Motor Drivers, Controllers

Package:: 14-TSSOP (0.173", 4.40mm Width) + 2 Heat Tabs

Datasheet:: AM4962GHTR-G1.pdf

Description:: IC MOTOR DRVR 3.5V-16V 14HTSSOP

Quantity:: RFQ Add To RFQ list

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Inventory:3,650

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Product details

Overview

AM4962GHTR-G1 from Diodes Incorporated is a single-phase full-wave brushless DC motor driver IC with direct PWM speed control, integrated Hall sensor bias, thermal shutdown, lock protection with auto-restart, and FG/RD status outputs. It supports 3.5–16 V supply, delivers up to 1.0 A output current, and operates from −30 °C to +90 °C ambient. Used in CPU cooler fans and compact BLDC motor systems requiring precise duty-cycle mapping and minimal external components.

For engineers reviewing the AM4962GHTR-G1 datasheet, AM4962GHTR-G1 pinout, AM4962GHTR-G1 application, or AM4962GHTR-G1 equivalent, key selection criteria include slope K adjustability (0.8 default), minimum/maximum output duty configurability via external resistors, built-in triangle wave generator eliminating external oscillator capacitor, and dual-package availability (HTSSOP-14/SSOP-16) with validated thermal performance.

Technical Context

The AM4962 implements a Hall-effect commutation controller with hysteresis amplification, CT-based lock detection timing, and RADJ-adjustable slope K that linearly maps input PWM duty (0–100%) to output PWM duty. Its internal triangle wave generator sets f_OSC = 18–32 kHz, enabling stable motor drive without external timing capacitors.

It integrates dual high-side/low-side pre-drivers with saturation voltages of V_SATH ≤ 1.17 V (I_SOURCE = 200 mA) and V_SATL ≤ 0.3 V (I_SINK = 200 mA), plus dedicated HB pin supplying 1.1–1.4 V bias for Hall sensors and FG/RD open-collector status outputs with 10 mA sink capability.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage (V_CC)	3.5–16 V - supports wide-input 12 V fan rails and tolerates transient overvoltage up to 18 V absolute max.
Output Current	1.0 A - sufficient for driving small-to-medium BLDC motors in CPU coolers and embedded cooling modules.
f_OSC / PWM Frequency	18–32 kHz - ultrasonic switching avoids audible noise while maintaining efficient MOSFET gate drive.
V_SATH / V_SATL	≤1.17 V / ≤0.3 V at 200 mA - low conduction loss enables high-efficiency operation without external heat sinking in HTSSOP-14.
Thermal Shutdown	Integrated - activates on junction overtemperature, with auto-restart after cooldown, ensuring robust motor stall recovery.
FG & RD Outputs	Open-collector, 10 mA sink - provide real-time rotation speed (FG) and lock/rotation state (RD) feedback for closed-loop monitoring.
VMIN Pin Voltage	3.4–4.0 V - sets default minimum output PWM duty (~20%), adjustable externally to prevent motor stall at low speeds.

Pinout & Package

AM4962GHTR-G1 is packaged in HTSSOP-14 (6.55 × 4.50 mm, 0.65 mm pitch), optimized for thermal dissipation (θ_JA = 114 °C/W) in space-constrained cooling applications. The package includes exposed thermal pad connected to PGND.

Pin	Circuit Role	Design Meaning
OUT1 / OUT2	Half-bridge outputs	Drive motor coil terminals; OUT1 connects to high-side switch, OUT2 to low-side switch in full-wave configuration.
VCC / GND / PGND	Power and ground rails	VCC powers control logic; GND is signal reference; PGND is separate power ground for high-current switching return path.
PWM / RADJ / VMIN / CT / CF	Control interface pins	PWM accepts 0–V_CC−1 V logic; RADJ adjusts slope K; VMIN sets min duty; CT configures lock timeout; CF filters PWM input.
HIN+, HIN−, HB	Hall sensor interface	HIN± receive differential Hall signals; HB supplies regulated 1.1–1.4 V bias current (10 mA max) directly to Hall ICs.
FG / RD	Status outputs	FG pulses at motor RPM/2 (open-collector); RD pulls low during rotation, floats/high during lock - no external pull-up needed if driven into microcontroller with internal pull-up.

Key Features

Feature	Design Value
Direct PWM speed control	Input PWM duty maps linearly to output duty via configurable slope K (default 0.8), enabling precise speed regulation without MCU firmware compensation.
Built-in triangle wave generator	Eliminates need for external RC oscillator capacitor - reduces BOM count and layout sensitivity while stabilizing PWM frequency at 25 kHz typical.
Hall bias regulator (HB)	Supplies stable 1.25 V ±0.15 V at up to 10 mA - powers common 3-pin Hall sensors without external LDO or resistor divider.
Lock protection with auto-restart	Detects stalled rotor via CT pin timing; shuts down outputs and automatically resumes after timeout - prevents thermal damage during jam conditions.
FG/RD dual-status indication	FG provides tachometer signal proportional to speed; RD gives binary lock/rotate flag - both enable real-time health monitoring with single GPIO per signal.

Applications

CPU Cooler Fan Control

Small BLDC Pump Driver

Use Scenario: Regulating airflow in desktop/laptop CPU heatsinks under dynamic thermal load.

IC Role / Device Role / Timing Role: Full-wave motor driver with Hall-commutated phase switching and direct PWM speed command interpretation.

Use Value: Enables silent, responsive fan speed control using standard 4-wire PWM interface while reducing component count via integrated HB bias and triangle wave generator.

Use Scenario: Driving miniature water/gas pumps in medical analyzers or HVAC sensors.

IC Role / Device Role / Timing Role: Single-phase BLDC driver with lock detection and FG feedback for closed-loop flow rate verification.

Use Value: Auto-restart after stall prevents system shutdown; FG output allows pump RPM validation without additional Hall decoding circuitry.

Industrial Cabinet Ventilation

Embedded Cooling Module

Use Scenario: Maintaining temperature in sealed industrial control cabinets with variable ambient conditions.

IC Role / Device Role / Timing Role: Motor driver with thermal shutdown and wide V_CC range (3.5–16 V) for unregulated 12 V rail operation.

Use Value: Integrated thermal protection ensures reliability across −30 °C to +90 °C ambient; PGND separation minimizes noise coupling into control logic.

Use Scenario: Compact cooling solution for FPGA or ASIC thermal management in telecom baseband units.

IC Role / Device Role / Timing Role: Space-optimized HTSSOP-14 driver with minimal external parts (no oscillator cap, no Hall bias resistor).

Use Value: Reduces PCB area by >30% vs. discrete driver + bias + oscillator solutions; RADJ/VMIN/CT pins allow tuning without firmware changes.

Equivalent & Alternatives

The following parts are listed as comparable options for similar single-phase BLDC motor driver applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
ALLEGRO A4962KLPTR-T	Same functional block diagram and pinout; higher V_CC max (28 V), higher I_OUT (2.5 A), but larger TSSOP-28 package and no RADJ/VMIN analog tuning.	Targeted at higher-power fans and industrial blowers where voltage headroom and current margin are critical.	Select when >1.0 A output or >16 V supply is required; avoid if board space or analog tuning flexibility is constrained.
TI DRV10983DGRT	Three-phase driver with integrated FETs; requires external Hall sensors; no built-in HB bias or FG/RD outputs; uses SPI for configuration instead of analog pins.	Designed for higher-efficiency multi-coil BLDCs where torque ripple and acoustic noise must be minimized.	Select only for three-phase motors; not drop-in compatible due to different topology, pin count, and control interface.

Compared with A4962KLPTR-T and DRV10983DGRT, AM4962GHTR-G1 offers unique analog configurability (RADJ/VMIN/CT), compact HTSSOP-14 footprint, and integrated Hall bias-making it optimal for cost-sensitive, space-limited single-phase cooling applications where firmware-free tuning is preferred.

Availability

AM4962GHTR-G1 is available at Aetrix Electronics and suitable for CPU cooler fan control, embedded BLDC pump drivers, and industrial cabinet ventilation systems requiring stable component supply, RoHS-compliant green packaging, and tape-and-reel delivery for SMT assembly.

Supply support for AM4962GHTR-G1 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 power management, signal integrity, and motor control solutions for computing, industrial, and consumer markets.

The AM4962 belongs to Diodes' motor driver product line, engineered specifically for compact, low-noise, single-phase BLDC applications where integration of Hall bias, lock protection, and analog PWM mapping eliminates external components and simplifies thermal design.

FAQ

What is the function of the RADJ pin on AM4962GHTR-G1?

The RADJ pin adjusts the slope K factor that determines the linear relationship between input PWM duty cycle and output PWM duty cycle. With no external resistor, K ≈ 0.8. Adding R5 increases K; adding R6 decreases K. This enables fine-tuned speed response without modifying MCU firmware or PWM generation logic.

Can AM4962GHTR-G1 drive a motor without an external Hall sensor?

No - the AM4962GHTR-G1 requires a 3-wire Hall-effect sensor connected to HIN+, HIN−, and HB pins for commutation. It does not support sensorless back-EMF detection. The HB pin supplies regulated bias current (1.1–1.4 V, up to 10 mA), so no external bias resistor is needed.

How does the CT pin implement lock protection?

The CT pin connects to an external capacitor that sets the time constant for lock detection. When rotor motion stops, the CT voltage decays; once below threshold, the IC disables outputs and asserts RD high. After timeout, it auto-restarts. Typical CT values range 10–100 nF depending on motor inertia and desired restart delay.

Is AM4962GHTR-G1 compatible with SSOP-16 footprint designs?

No - AM4962GHTR-G1 is specified only for HTSSOP-14 (G1 suffix). The SSOP-16 variant is AM4962GSTR-G1 (GS prefix). Pinouts differ: SSOP-16 adds NC and moves PGND to pin 16, while HTSSOP-14 places PGND at pins 13 and 14. Layouts are not interchangeable.

AM4962GHTR-G1 Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: 14-TSSOP (0.173", 4.40mm Width) + 2 Heat Tabs

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:: PWM

Technology:: Bipolar

Step Resolution:: -

Applications:: General Purpose

Current - Output:: 1A

Voltage - Supply:: 3.5V ~ 16V

Voltage - Load:: 3.5V ~ 16V

Operating Temperature:: -30°C ~ 90°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 14-HTSSOP

AM4962GHTR-G1 FAQ

1.How can I place an order for AM4962GHTR-G1 through Aetrix?

Please submit a Request for Quotation (RFQ) for AM4962GHTR-G1 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 AM4962GHTR-G1 reliable?

The price and inventory of AM4962GHTR-G1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AM4962GHTR-G1 is usually 5 days.

3.What payment methods are accepted for AM4962GHTR-G1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AM4962GHTR-G1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AM4962GHTR-G1?

AM4962GHTR-G1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AM4962GHTR-G1 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 AM4962GHTR-G1?

For technical support, including AM4962GHTR-G1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AM4962GHTR-G1 requirements.

6.How does Aetrix verify that AM4962GHTR-G1 is sourced from the original manufacturer or authorized distributors?

All AM4962GHTR-G1 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 AM4962GHTR-G1 meets industry standards.

7.What is the process for return or replacement of AM4962GHTR-G1?

All AM4962GHTR-G1 units undergo pre-shipment inspection (PSI). If there is an issue with AM4962GHTR-G1, 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 AM4962GHTR-G1 part is unused and in its original packaging.

Return procedure for AM4962GHTR-G1:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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