My Inquiry
My Account
Allegro MicroSystems A4919GETTR-5-T
- Part No.:
- A4919GETTR-5-T
- Manufacturer:
- Allegro MicroSystems
- Category:
- Gate Drivers
- Package:
- 28-VFQFN Exposed Pad
- Datasheet:
-
A4919GETTR-5-T.pdf
- Description:
- IC GATE DRVR HI/LOW SIDE 28QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,975
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
A4919GETTR-5-T from Allegro MicroSystems is a three-phase N-channel MOSFET gate driver IC with integrated 5 V low-dropout (LDO) regulator, designed for brushless DC motor control in battery-powered and industrial systems. It operates from 5.5 V to 50 V supply, delivers regulated 13 V gate drive via charge pump, supports independent logic-level phase control (AHI/ALO/BHI/BLO/CHI/CLO), and provides short-to-supply/short-to-ground fault detection per phase - used in cordless power tools and CPAP machines.
For engineers reviewing the A4919GETTR-5-T datasheet, A4919GETTR-5-T pinout, A4919GETTR-5-T application, or A4919GETTR-5-T equivalent, this page delivers verified functional identity, validated QFN-28 pin mapping, confirmed 5 V LDO output capability, real-time VDS fault monitoring architecture, and cross-verified alternative part selection guidance based on Allegro's official selection guide and electrical specifications.
Technical Context
The A4919GETTR-5-T implements a six-output, three-phase high- and low-side gate driver architecture with independent TTL-compatible logic inputs for each of the six external N-channel MOSFETs. Its charge pump regulator maintains >10 V gate drive down to VBB = 7 V and sustains functional operation at VBB as low as 5.5 V with reduced drive strength.
It integrates a dedicated 5 V LDO regulator (V5 output, ±2.5% accuracy at 5 mA–25 mA load), drain-source voltage monitoring per phase using programmable VDSTH threshold (0.2–2.0 V range), and crossover protection to prevent shoot-through. Fault conditions-including overtemperature (170°C warning), undervoltage, and phase shorts-are consolidated into a single open-drain FAULT output.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBB Supply Range | 5.5 V to 50 V - enables direct use with 12 V, 24 V, and 48 V battery or industrial bus systems without external regulation. |
| V5 Output Voltage | 4.9 V to 5.2 V at 5–25 mA - powers external microcontrollers, sensors, or level shifters without requiring separate 5 V rail. |
| VREG Output | 12.5–13.75 V - supplies low-side drivers and charges bootstrap capacitors; stable across temperature and load for reliable MOSFET turn-on. |
| Gate Drive Strength | RDS(on)UP = 5–13 Ω (high-side), RDS(on)DN = 1.5–4.6 Ω (low-side) - ensures fast switching of typical 5–20 mΩ N-channel MOSFETs in BLDC inverters. |
| Fault Detection | VDS monitor per phase with user-programmable threshold (0.2–2.0 V on VDSTH) - detects short-to-supply and short-to-ground faults before MOSFET destruction. |
| Thermal Resistance | RθJA = 32 °C/W (QFN-28 ET package, 4-layer PCB) - supports continuous operation up to 105°C ambient with standard layout. |
| Propagation Delay | tP(on)/tP(off) = 60–180 ns - enables high-frequency PWM commutation (>20 kHz) with tight timing control across phases. |
Pinout & Package
Package: 28-terminal 5 mm × 5 mm × 0.90 mm QFN with exposed thermal pad (suffix ET, Pb-free, 100% matte-tin plating).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VBB | Main power supply input | Accepts 5.5–50 V system bus; powers internal logic, charge pump, and LDO; requires local ceramic decoupling. |
| V5 | 5 V LDO output | Supplies external circuitry (e.g., MCU, sensors); requires ≥1 µF low-ESR capacitor to GND for stability. |
| FAULT | Open-drain fault indicator | Active-high signal pulled externally to ≤5.5 V; asserts on overtemperature, VDD undervoltage, or phase short faults. |
| AHI, ALO, BHI, BLO, CHI, CLO | Phase control inputs | TTL-compatible (VIH ≥ 2.0 V, VIL ≤ 0.8 V); each pair controls one high/low-side gate drive independently. |
| GHA, GHB, GHC | High-side gate drive outputs | Drive external N-MOSFET gates via bootstrap capacitors (CA/CB/CC); referenced to SA/SB/SC respectively. |
| GLA, GLB, GLC | Low-side gate drive outputs | Referenced to LSS; sink/source current to switch low-side MOSFETs; support slew-rate control with series gate resistors. |
| VDSTH | VDS fault threshold programming | Analog input (0.2–2.0 V) sets per-phase short-circuit detection level; high-impedance allows resistor-divider configuration. |
| CP1, CP2 | Charge pump capacitor terminals | Connect 470 nF ceramic capacitor between CP1 and CP2 to enable full gate drive at low VBB (≤7 V). |
| VREG | Regulated gate drive supply | Nominally 13 V output; powers low-side drivers and charges bootstrap caps; requires bulk storage capacitor (≥10 µF). |
| LSS | Low-side source return | Common return path for all low-side MOSFET sources; must be connected via low-impedance PCB trace to minimize noise and ground bounce. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 5 V LDO regulator | Delivers stable 4.9–5.2 V at up to 70 mA to power external logic without adding discrete regulators or LDOs. |
| Programmable VDS fault detection | Per-phase short-circuit sensing via analog VDSTH pin (0.2–2.0 V range) enables precise threshold tuning for varying MOSFET RDS(on) and layout parasitics. |
| Charge pump + bootstrap architecture | Maintains >10 V gate drive down to VBB = 7 V and functional operation to 5.5 V - critical for deep-discharge battery applications like power tools. |
| Crossover conduction protection | Hardware lockout prevents simultaneous high- and low-side FET activation in any phase, eliminating shoot-through risk without software intervention. |
| Open-drain FAULT output with latch option | Single-pin reporting of overtemperature (170°C), V5 undervoltage (2.7 V), and phase shorts - simplifies system-level diagnostics and shutdown sequencing. |
Applications
| Lawn and Garden Equipment | Battery-Powered Power Tools |
|---|---|
Use Scenario: Cordless string trimmers and hedge trimmers using 18–40 V Li-ion battery packs with sensorless BLDC motors. IC Role / Device Role / Timing Role: Three-phase gate driver controlling external N-MOSFET half-bridge inverter; manages commutation timing via MCU-generated logic signals. Use Value: Integrated 5 V LDO powers motor control MCU and Hall sensors; VDS monitoring prevents MOSFET failure during blade stall or jam events. |
Use Scenario: High-torque drills and impact drivers operating from 20 V Max or 40 V platform batteries with aggressive duty cycles. IC Role / Device Role / Timing Role: Gate driver enabling high-frequency (≥15 kHz) PWM control of 60–100 A peak motor current; FAULT pin triggers immediate shutdown on overtemperature. Use Value: Charge pump ensures full gate drive even at 12 V battery sag; programmable VDSTH adapts short-detection sensitivity to MOSFET on-resistance drift over lifetime. |
| Industrial Grinders | CPAP Machines |
Use Scenario: Portable angle grinders with variable-speed control and thermal overload protection requirements in factory environments. IC Role / Device Role / Timing Role: Phase-commutated driver for 3-phase BLDC spindle motor; FAULT output feeds safety PLC for emergency stop coordination. Use Value: RθJA = 32 °C/W (QFN) enables compact heatsink-less design; VBRG sense input monitors high-side drain voltage for accurate overvoltage clamping. |
Use Scenario: Medical-grade CPAP blowers requiring ultra-low acoustic noise, smooth torque delivery, and fail-safe motor shutdown. IC Role / Device Role / Timing Role: Precision gate driver supporting sinusoidal commutation; V5 output powers pressure sensor and airflow controller ICs. Use Value: Bootstrap blank time (1.5–4.5 µs) eliminates false short detection during PWM transitions; VDS threshold hysteresis prevents chatter during transient load changes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar three-phase gate driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| A4919GETTR-T | No integrated LDO; VDDM monitor input only (no 5 V output); identical gate drive, fault, and thermal specs. | Requires external 5 V supply for MCU/peripherals; suitable where board already has regulated 5 V rail and space is constrained. | Select when system-level 5 V is available and LDO integration adds unnecessary cost or thermal load. |
| MP6532DJ-LF-Z | Monolithic 3-phase driver (integrated MOSFETs); 5–28 V input; no external LDO; lower current rating (2 A per phase). | Targeted at low-power fans or small pumps; not suitable for >10 A motor loads or high-voltage battery systems. | Choose only for space-constrained, low-current (<3 A) applications where discrete MOSFETs are undesirable. |
Compared with A4919GETTR-5-T, A4919GETTR-T removes the 5 V LDO but retains identical gate drive performance and fault coverage - ideal for systems with existing 5 V infrastructure. MP6532DJ-LF-Z integrates power stages but sacrifices voltage range, current capability, and programmable fault thresholds, limiting its use to low-power consumer appliances.
Availability
A4919GETTR-5-T is available at Aetrix Electronics and suitable for battery-operated power tools, CPAP machines, and industrial grinders requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for A4919GETTR-5-T 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
Allegro MicroSystems is a U.S.-based semiconductor company specializing in magnetic sensing, power ICs, and motor control solutions, with design centers in New Hampshire and global manufacturing partnerships.
The A4919 product line delivers high-current, fault-protected three-phase gate drivers for BLDC motor systems in portable and industrial equipment - engineered for robustness under wide-input-voltage, high-temperature, and high-noise conditions.
FAQ
What is the function of the V5 pin on the A4919GETTR-5-T?
The V5 pin on the A4919GETTR-5-T is the output of an integrated 5 V low-dropout regulator, delivering 4.9–5.2 V at up to 70 mA to power external circuitry such as microcontrollers, sensors, or level translators. It requires a minimum 1 µF low-ESR capacitor to GND for stability and is not used to power internal logic - the device draws core power from VBB. This eliminates the need for a separate 5 V regulator in designs using the A4919GETTR-5-T.
Does the A4919GETTR-5-T support sleep mode?
No, the A4919GETTR-5-T does not support sleep mode. Sleep mode is only available on the A4919x (no LDO) variants such as A4919GLPTR-T. The A4919GETTR-5-T retains full functionality - including gate drive, fault monitoring, and LDO regulation - whenever VBB is within specification (5.5–50 V), even if all logic inputs are held low. This ensures predictable behavior in systems where input states may float or be undefined during standby.
How is short-circuit protection implemented in the A4919GETTR-5-T?
The A4919GETTR-5-T implements per-phase short-to-supply and short-to-ground detection using dedicated drain-source voltage (VDS) monitors on each external MOSFET. The threshold is set via the VDSTH pin (0.2–2.0 V analog input), and faults are reported on the open-drain FAULT pin. Detection includes blanking time (1.5–4.5 µs) to suppress false triggers during PWM transitions, and offsets (±100 mV) compensate for MOSFET RDS(on) variation - ensuring reliable protection without nuisance tripping in the A4919GETTR-5-T.
What package type is used for the A4919GETTR-5-T?
The A4919GETTR-5-T uses a 28-terminal 5 mm × 5 mm × 0.90 mm QFN package with exposed thermal pad (Allegro designation "ET"). It is lead-free with 100% matte-tin leadframe plating and optimized for thermal dissipation - achieving RθJA = 32 °C/W on a 4-layer JEDEC-standard PCB. This package replaces the TSSOP-LP variant in space-constrained, high-power-density applications while maintaining pin compatibility at the functional level.
Can the A4919GETTR-5-T drive both high-side and low-side N-channel MOSFETs?
Yes, the A4919GETTR-5-T is explicitly designed to drive six external N-channel MOSFETs - three high-side (via GHA/GHB/GHC outputs with bootstrap capacitors CA/CB/CC) and three low-side (via GLA/GLB/GLC outputs referenced to LSS). Its integrated charge pump generates >10 V gate drive for high-side FETs down to VBB = 7 V, and its low-side drivers deliver RDS(on)DN = 1.5–4.6 Ω to ensure fast turn-off - fully enabling efficient 3-phase BLDC inverter topologies in the A4919GETTR-5-T.
A4919GETTR-5-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Allegro MicroSystems
- Series:
- -
- Package/Case:
- 28-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Driven Configuration:
- High-Side or Low-Side
- Channel Type:
- 3-Phase
- Number of Drivers:
- 6
- Gate Type:
- N-Channel MOSFET
- Voltage - Supply:
- 5.5V ~ 50V
- Logic Voltage - VIL, VIH:
- 0.8V, 1.5V
- Current - Peak Output (Source, Sink):
- -
- Input Type:
- TTL
- High Side Voltage - Max (Bootstrap):
- -
- Rise / Fall Time (Typ):
- 35ns, 20ns
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 28-QFN (5x5)
A4919GETTR-5-T FAQ
1.How can I place an order for A4919GETTR-5-T through Aetrix?
Please submit a Request for Quotation (RFQ) for A4919GETTR-5-T 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 A4919GETTR-5-T reliable?
The price and inventory of A4919GETTR-5-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for A4919GETTR-5-T is usually 5 days.
3.What payment methods are accepted for A4919GETTR-5-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for A4919GETTR-5-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for A4919GETTR-5-T?
A4919GETTR-5-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your A4919GETTR-5-T 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 A4919GETTR-5-T?
For technical support, including A4919GETTR-5-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your A4919GETTR-5-T requirements.
6.How does Aetrix verify that A4919GETTR-5-T is sourced from the original manufacturer or authorized distributors?
All A4919GETTR-5-T 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 A4919GETTR-5-T meets industry standards.
7.What is the process for return or replacement of A4919GETTR-5-T?
All A4919GETTR-5-T units undergo pre-shipment inspection (PSI). If there is an issue with A4919GETTR-5-T, 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 A4919GETTR-5-T part is unused and in its original packaging.
Return procedure for A4919GETTR-5-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
A4919GETTR-5-T Tags
-
ZXGD3009E6TA
Diodes Incorporated
-
1EDN7512BXTSA1
Infineon Technologies
-
UCC27517DBVR
Texas Instruments
-
MCP1416T-E/OT
Microchip Technology
-
MCP1402T-E/OT
Microchip Technology
-
MCP1415T-E/OT
Microchip Technology
-
MCP1401T-E/OT
Microchip Technology
-
IX4428NTR
Littelfuse Inc.
-
IRS2005STRPBF
Infineon Technologies
-
IRS2008STRPBF
Infineon Technologies
-
IX4310TTR
Littelfuse Inc.
-
2EDN7524RXTMA1
Infineon Technologies
Tech Hub
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
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…
