My Inquiry
My Account
Diodes Incorporated AM4962GSTR-G1
- Part No.:
- AM4962GSTR-G1
- Manufacturer:
- Diodes Incorporated
- Category:
- Motor Drivers, Controllers
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
AM4962GSTR-G1.pdf
- Description:
- IC MOTOR DRIVER 3.5V-16V 16SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,662
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AM4962GSTR-G1 from Diodes Incorporated is a single-phase full-wave brushless DC motor driver IC with direct PWM speed control, integrated Hall bias, thermal shutdown, lock protection with auto-restart, and FG/RD status outputs. It supports 3.5–16 V supply, delivers 1.0 A output current, and operates up to +90°C ambient - used in CPU cooler fan control circuits requiring precise duty-cycle mapping and stall detection.
For engineers reviewing the AM4962GSTR-G1 datasheet, AM4962GSTR-G1 pinout, AM4962GSTR-G1 application, or AM4962GSTR-G1 equivalent, key selection criteria include slope K adjustability (0.8 default), minimum/maximum output duty configurability via external resistors, built-in triangle wave generation (no external oscillator capacitor), and dual-package availability (SSOP-16 tape-and-reel).
Technical Context
The AM4962 implements a Hall-sensor-based commutation controller with internal hysteresis amplifier, CT capacitor-based lock/rotation timing, and RADJ-adjustable slope for linearized output PWM duty vs. input PWM duty. Its functional block integrates pre-driver stages for high-side (OUT1) and low-side (OUT2) MOSFETs with independent saturation voltage specs (VSATH ≤ 1.17 V @ 200 mA, VSATL ≤ 0.3 V @ 200 mA).
It features dual ground domains (GND for logic, PGND for power), dedicated VMIN pin for minimum duty setup (3.4–4.0 V typical), and CF filtering for PWM input stabilization. The RD and FG outputs provide open-drain status signals for rotation lock detection and tachometer feedback, respectively, with 10 mA sink capability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage (VCC) | 3.5–16 V - supports 5 V and 12 V fan rail systems without external LDO |
| Output Current | 1.0 A continuous - drives typical 12 V, 0.8 A CPU cooler motors directly |
| PWM Frequency | 18–32 kHz - avoids audible noise while enabling fast loop response |
| FG Output Accuracy | Two-pulse-per-revolution signal - enables precise RPM calculation in closed-loop fan control |
| Thermal Shutdown Threshold | Internally set - protects against sustained overload without external sensor |
| Slope K Adjustment Range | Configurable from ~0.6 to >1.0 via R5/R6 - tunes output linearity to match motor torque profile |
| Min Duty Default | ~20% - prevents stalling at low speeds; adjustable down to <10% with R2/R5 |
Pinout & Package
AM4962GSTR-G1 is packaged in SSOP-16 (3.8 × 4.0 mm, 0.635 mm pitch), with exposed thermal pad for enhanced power dissipation (θJA = 156 °C/W). Pin 16 is PGND - critical for low-impedance power return path and EMI reduction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 OUT2 | Low-side driver output | Switches motor phase low; rated for 1.0 A sink, 0.3 V saturation |
| 2 NC | No connection | Unused pin - must be left floating or tied to GND per layout guidelines |
| 3 VCC | Logic and bias power supply | Input for internal regulators powering Hall bias, FG/RD drivers, and control logic |
| 4 VMIN | Minimum output duty reference | Analog input setting lower bound of output PWM duty (3.4–4.0 V range) |
| 5 PWM | Direct PWM command input | TTL/CMOS-compatible input accepting 0–VCC-1 V pulses for speed command |
| 6 CF | PWM filter capacitor terminal | Connects external capacitor to suppress noise on PWM input line |
| 7 FG | Rotation speed indicator output | Open-drain pulse output (2 pulses/rev); requires pull-up for tach feedback |
| 8 RD | Rotation/lock state indicator | Open-drain active-low flag - low during rotation, high during lock/stall |
| 9 HIN+ | Hall sensor positive input | Differential input for bipolar Hall sensor; ±10 mV hysteresis prevents chatter |
| 10 HB | Hall bias regulator output | 1.1–1.4 V regulated supply for Hall sensor excitation (10 mA max) |
| 11 HIN− | Hall sensor negative input | Differential complement to HIN+; enables robust commutation under EMI |
| 12 RADJ | Slope K adjustment terminal | Analog node controlling gain between input and output PWM duty (via R5/R6) |
| 13 CT | Lock/rotation timing capacitor | External capacitor sets timeout for lock detection and auto-restart delay |
| 14 GND | Control circuit ground | Reference for logic, Hall inputs, and FG/RD outputs - separate from PGND |
| 15 OUT1 | High-side driver output | Switches motor phase high; rated for 1.0 A source, 1.17 V saturation |
| 16 PGND | Power ground | Return path for OUT1/OUT2 current - must be low-inductance, thermally coupled |
Key Features
| Feature | Design Value |
|---|---|
| Direct PWM speed control | Eliminates microcontroller-based PWM-to-analog conversion; enables simple MCU GPIO control |
| Built-in triangle wave generator | Removes need for external RC oscillator - reduces BOM count and layout sensitivity |
| Hall bias regulator (HB) | Provides stable 1.25 V ±0.15 V at up to 10 mA - powers common 3-wire Hall sensors directly |
| Configurable min/max output duty | R2 adjusts minimum duty (down to ~5%); R3/R4 tune maximum duty (100% default) |
| Lock protection with auto-restart | CT capacitor sets retry interval after stall detection - prevents thermal runaway |
Applications
| CPU Cooler Fan Control | Server Chassis Fan Module |
|---|---|
|
Use Scenario: Closed-loop thermal management in desktop and workstation CPUs using 4-wire PWM fans. IC Role / Device Role / Timing Role: Full-wave commutation controller interpreting PWM speed commands and Hall feedback to drive external N-channel MOSFETs. Use Value: Enables precise 20–100% duty control with FG tach feedback and RD stall detection - eliminating need for external ADC or comparator. |
Use Scenario: Redundant fan trays in 1U/2U rack servers requiring fault reporting and hot-swap compatibility. IC Role / Device Role / Timing Role: Motor driver with dual-status outputs (FG for RPM monitoring, RD for lock alarm) interfaced to BMC via I²C GPIO expander. Use Value: RD output triggers immediate BMC alert on motor stall; FG pulses feed fan speed telemetry without host CPU intervention. |
| Industrial Blower System | Medical Ventilation Fan Drive |
|
Use Scenario: Variable-speed air movers in HVAC ducts where EMI immunity and thermal reliability are critical. IC Role / Device Role / Timing Role: Hall-commutated BLDC driver with differential Hall inputs and separate GND/PGND domains for noise isolation. Use Value: ±10 mV Hall hysteresis and CF filtering ensure robust operation in electrically noisy industrial environments. |
Use Scenario: Low-noise, fail-safe cooling for ventilator power supplies operating in Class II medical equipment. IC Role / Device Role / Timing Role: Motor driver with thermal shutdown and lock protection - monitored by system safety controller via RD/FG signals. Use Value: Auto-restart after thermal event maintains airflow continuity; RD high-state confirms safe operational status to safety MCU. |
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 pinout and function but higher VCC max (28 V), wider temp range (−40°C to +125°C), no SSOP-16 option | Preferred for automotive under-hood or industrial high-temp designs; requires revalidation of CT/RADJ resistor values | Select when extended temperature or voltage margin is required; not drop-in due to different thermal pad layout |
| ON Semiconductor NCP5425DR2G | Lacks Hall bias, FG/RD outputs, and slope K adjustment; uses external oscillator and op-amp-based speed control | Suitable only for simpler open-loop fans without tach feedback or stall detection | Choose only if cost is primary constraint and FG/RD functionality is omitted from system architecture |
Compared with A4962KLPTR-T and NCP5425DR2G, AM4962GSTR-G1 uniquely integrates Hall bias, dual-status outputs, and analog slope tuning - enabling compact, self-contained fan control without external support components or firmware overhead.
Availability
AM4962GSTR-G1 is available at Aetrix Electronics and suitable for CPU cooler fan control, server chassis fan modules, industrial blower systems, and medical ventilation fan drives requiring stable component supply and long-term production continuity.
Supply support for AM4962GSTR-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 ICs, specializing in power management, signal integrity, and motor control solutions for computing, industrial, and consumer markets.
The AM4962 belongs to Diodes' BLDC motor driver product line, designed specifically for cost-sensitive, space-constrained 4-wire PWM fan applications requiring integrated Hall sensing, tach feedback, and stall protection - without microcontroller dependency.
FAQ
What is the recommended external capacitor value for the CF pin?
The CF pin requires a 1 µF ceramic capacitor placed close to the package to filter high-frequency noise on the PWM input line. This value is validated in the typical application circuit (DS43019, page 2) and ensures stable duty-cycle interpretation across temperature and supply variations. Larger values may slow response; smaller values reduce noise immunity.
Can AM4962GSTR-G1 drive a motor directly without external MOSFETs?
No. AM4962GSTR-G1 is a gate driver IC - its OUT1 and OUT2 pins are high- and low-side drivers intended to control external N-channel MOSFETs (e.g., DMN3025LSD for low-side, DMP3025LSD for high-side). It does not integrate power FETs and cannot source/sink motor current directly.
How is the minimum output PWM duty adjusted using the VMIN pin?
VMIN accepts a DC voltage (3.4–4.0 V typical) that sets the lower bound of output PWM duty. Applying a lower voltage (e.g., via resistor divider from VCC) reduces minimum duty; increasing voltage raises it. Default ~20% duty corresponds to VMIN ≈ 3.7 V. External R2 (page 3, DS43019) fine-tunes this point.
Is the SSOP-16 package (GSTR-G1) pin-compatible with the HTSSOP-14 version?
No. SSOP-16 (AM4962GSTR-G1) adds NC and PGND pins versus HTSSOP-14 (AM4962GHTR-G1), altering pin mapping. Pin 1 is OUT2 in both, but SSOP-16 has dedicated PGND (pin 16) and NC (pin 2), while HTSSOP-14 consolidates PGND into pins 7 and 14. Layout and schematic must be redesigned for package change.
AM4962GSTR-G1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 16-SSOP (0.154", 3.90mm Width)
- 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:
- 16-SSOP
AM4962GSTR-G1 FAQ
1.How can I place an order for AM4962GSTR-G1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AM4962GSTR-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 AM4962GSTR-G1 reliable?
The price and inventory of AM4962GSTR-G1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AM4962GSTR-G1 is usually 5 days.
3.What payment methods are accepted for AM4962GSTR-G1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AM4962GSTR-G1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AM4962GSTR-G1?
AM4962GSTR-G1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AM4962GSTR-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 AM4962GSTR-G1?
For technical support, including AM4962GSTR-G1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AM4962GSTR-G1 requirements.
6.How does Aetrix verify that AM4962GSTR-G1 is sourced from the original manufacturer or authorized distributors?
All AM4962GSTR-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 AM4962GSTR-G1 meets industry standards.
7.What is the process for return or replacement of AM4962GSTR-G1?
All AM4962GSTR-G1 units undergo pre-shipment inspection (PSI). If there is an issue with AM4962GSTR-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 AM4962GSTR-G1 part is unused and in its original packaging.
Return procedure for AM4962GSTR-G1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AM4962GSTR-G1 Tags
-
DRV2603RUNR
Texas Instruments
-
DRV8837CDSGR
Texas Instruments
-
DRV8837DSGR
Texas Instruments
-
DRV8838DSGR
Texas Instruments
-
DRV8839DSSR
Texas Instruments
-
EMC2301-1-ACZL-TR
Microchip Technology
-
DRV8231ADSGR
Texas Instruments
-
EMC2302-2-AIZL-TR
Microchip Technology
-
DRV8800PWPR
Texas Instruments
-
DRV8835DSSR
Texas Instruments
-
EMC2303-1-KP-TR
Microchip Technology
-
DRV8876PWPR
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
