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Analog Devices Inc./Maxim Integrated MAX15054AUT+T
- Part No.:
- MAX15054AUT+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Gate Drivers
- Package:
- SOT-23-6
- Datasheet:
-
MAX15054AUT+T.pdf
- Description:
- IC GATE DRVR HIGH-SIDE SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:2,216
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Product details
Overview
MAX15054AUT+T from Analog Devices is a high-side n-channel MOSFET driver IC designed for HB LED drivers and high-frequency DC-DC converters. It operates from 4.6V to 5.5V VDD, delivers 2.5A peak source/sink current, exhibits 12ns typical propagation delay, and supports LX voltages up to 60V - enabling robust gate driving in buck-boost and half-bridge topologies with ground-referenced output.
For engineers reviewing the MAX15054AUT+T datasheet, MAX15054AUT+T pinout, MAX15054AUT+T application, or MAX15054AUT+T equivalent, key selection criteria include bootstrap-based high-side operation, 13.5V logic-input tolerance independent of supply, dual UVLO protection (VDD and BST-LX), 6-pin SOT23 footprint, and automotive-grade -40°C to +125°C operation.
Technical Context
The MAX15054AUT+T integrates a totem-pole output stage with low RON p- and n-channel devices to rapidly charge/discharge high-Qg MOSFET gates. Its internal break-before-make logic prevents shoot-through during state transitions, reducing supply current spikes and voltage overshoot at VDD.
Operation relies on an external bootstrap circuit: a Schottky diode between VDD and BST charges a capacitor (CBST) referenced to LX, enabling HDRV to swing above LX for high-side FET turn-on. Dual undervoltage lockout monitors both VDD (4.22V typ rising threshold) and BST-LX (3.82V typ) with 0.2V hysteresis to ensure safe startup and fault recovery.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDD Supply Range | 4.6V to 5.5V - defines minimum/maximum bias for internal logic and low-side UVLO monitoring |
| LX Voltage Rating | Up to 60V - enables direct connection to high-voltage switching nodes in buck-boost and half-bridge LED drivers |
| Peak Output Current | ±2.5A - sustains fast gate charging/discharging for MOSFETs with >10nC Qg at 2MHz switching |
| Propagation Delay | 12ns typical - ensures tight timing control in high-frequency PWM dimming and synchronous rectification |
| Rise/Fall Time | 6ns into 1000pF - minimizes switching losses and EMI in compact, high-density LED driver PCB layouts |
| Logic Input Tolerance | Up to 13.5V HI input - allows direct interface with 12V microcontrollers or PWM controllers without level-shifting |
| Operating Temperature | -40°C to +125°C - qualified for under-hood automotive LED lighting and industrial DC-DC power stages |
Pinout & Package
MAX15054AUT+T is housed in a RoHS-compliant 6-pin SOT23 package (package code U6+1A), with 1.3mm × 2.9mm footprint and 0.95mm height - compatible with standard automated assembly and reflow processes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - HI | CMOS logic input referenced to GND | Accepts 0–13.5V logic signals; 300kΩ input resistance and 0.9V hysteresis prevent false triggering during noise transients |
| 2 - GND | Low-side reference node | Return path for VDD supply, logic input, and internal UVLO comparators - must be low-impedance and separate from power ground |
| 3 - VDD | Low-side supply input | Powers internal logic and low-side UVLO; requires 0.1µF ceramic bypass capacitor placed adjacent to pin |
| 4 - BST | Bootstrap capacitor connection | Node for external 0.1µF+ ceramic capacitor tied to LX; supplies gate drive voltage for high-side FET when HDRV is high |
| 5 - HDRV | High-side gate driver output | Drives external MOSFET gate; swings from ~0V (LX-referenced low) to VDD minus Schottky diode drop (high) |
| 6 - LX | High-side MOSFET source terminal | Switching node return for HDRV and BST capacitor; withstands -2V to +65V and dV/dt up to 50V/ns |
Key Features
| Feature | Design Value |
|---|---|
| Dual UVLO Protection | Independent monitoring of VDD (4.22V rising threshold) and BST-LX (3.82V rising threshold) with 0.2V hysteresis prevents erratic operation during brownout or bootstrap capacitor discharge |
| Shoot-Through Prevention | Internal break-before-make logic enforces dead time between HDRV high/low transitions, eliminating cross-conduction and associated efficiency loss or thermal stress |
| High-Voltage Logic Input | HI pin tolerates up to 13.5V regardless of VDD - enables direct interfacing with 12V automotive controllers or industrial PLC outputs without external level shifters |
| Fast Switching Performance | 6ns rise/fall times into 1000pF and 12ns propagation delay support stable 2MHz operation in compact, high-efficiency LED backlight and DC-DC designs |
| Automotive Temperature Range | Guaranteed operation from -40°C to +125°C junction temperature - validated for headlamp drivers, infotainment displays, and engine-control auxiliary power supplies |
Applications
| HB LED Driver for Automotive Headlamps | Ground-Referenced Buck-Boost LED Backlight |
|---|---|
|
Use Scenario: High-brightness LED arrays in adaptive front-lighting systems requiring precise PWM dimming and thermal resilience. IC Role / Device Role / Timing Role: High-side gate driver controlling external n-channel MOSFET in buck-boost topology with output referenced to chassis ground. Use Value: Enables single-supply 12V automotive architecture with no optocoupler isolation needed, while maintaining <12ns timing fidelity for flicker-free 2kHz dimming. |
Use Scenario: LCD TV or monitor backlight with multistring parallel LEDs requiring constant-current regulation and wide dimming range. IC Role / Device Role / Timing Role: High-side switch driver in ground-referenced buck-boost converter, paired with MAX16834 or MAX16833 controller. Use Value: Eliminates floating ground complications in multistring configurations and supports >90% efficiency at 1.5A per string with minimal layout area. |
| Half-Bridge DC-DC Converter for Industrial Power | High-Frequency Synchronous Rectifier Driver |
|
Use Scenario: 48V-to-12V isolated DC-DC module in telecom or server power supplies requiring high efficiency and compact magnetics. IC Role / Device Role / Timing Role: High-side driver in active clamp or half-bridge primary-side switch stage, synchronized to controller HI signal. Use Value: 2.5A peak current and 6ns edge rates enable <50ns dead-time control, reducing conduction loss and improving ZVS performance at 1MHz switching. |
Use Scenario: Secondary-side synchronous rectification in LLC resonant converters where gate drive must track fast voltage reversals across transformer secondary. IC Role / Device Role / Timing Role: High-side driver for SR MOSFET connected to transformer center-tap, referenced to dynamic LX node. Use Value: 50V/ns dV/dt immunity and 60V LX rating allow reliable operation in high-slew-rate LLC waveforms without false triggering or latch-up. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-side MOSFET driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM5109BMM/NOPB | Higher VDD range (6–14V), lower peak current (1.5A), no BST-LX UVLO; uses integrated charge pump instead of external bootstrap | Better suited for fixed 12V systems with moderate gate charge; lacks automotive temp grade and LX voltage rating for 60V LED strings | Select LM5109BMM/NOPB when system uses 12V rail and avoids external diode/capacitor complexity - but verify LX voltage stays below 45V |
| IRS2005PBF | Higher voltage rating (600V LX), higher peak current (2.5A), but slower propagation (60ns typ); requires floating supply and separate level shifter | Targeted at motor drives and PFC stages; not optimized for sub-100ns timing-critical LED dimming or 2MHz DC-DC | Choose IRS2005PBF only for high-voltage industrial AC-DC or motor control - not for automotive LED or compact buck-boost where timing precision matters |
Compared with LM5109BMM/NOPB and IRS2005PBF, the MAX15054AUT+T uniquely combines automotive temperature range, 12ns propagation delay, 60V LX rating, and integrated BST-LX UVLO - making it the only option among the three qualified for ground-referenced, high-frequency HB LED drivers in harsh environments.
Availability
MAX15054AUT+T is available at Aetrix Electronics and suitable for HB LED drivers, automotive lighting modules, and high-frequency DC-DC converters requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for MAX15054AUT+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
Analog Devices, Inc. is a global semiconductor leader specializing in high-performance analog, mixed-signal, and digital signal processing technologies for precision, power, and connectivity applications.
The MAX15054AUT+T belongs to Analog Devices' high-voltage power management portfolio, engineered specifically for high-efficiency, high-reliability LED driver and DC-DC converter subsystems in automotive and industrial environments.
FAQ
What is the maximum allowable dV/dt at the LX pin of the MAX15054AUT+T?
The MAX15054AUT+T specifies a maximum dV/dt rating of 50V/ns at the LX pin. This parameter ensures reliable operation in fast-switching topologies such as LLC resonant converters and high-frequency buck-boost LED drivers. Exceeding this rate may cause false triggering of internal level-shift circuits or premature UVLO activation. The 50V/ns limit is verified across the full -40°C to +125°C temperature range and is integral to the device's robustness in automotive and industrial applications using the MAX15054AUT+T.
Can the MAX15054AUT+T drive a MOSFET with 50nC total gate charge at 1MHz?
Yes, the MAX15054AUT+T can reliably drive a MOSFET with 50nC total gate charge at 1MHz. With 2.5A peak source/sink current and 6ns rise/fall times into 1000pF, it delivers sufficient gate current to achieve <100ns effective switching transitions. At 1MHz, the required average gate drive current is ~50mA (Qg × fsw), well within the ±100mA continuous rating. Thermal performance remains stable due to the 6-pin SOT23 package's 115°C/W θJA, confirmed in the MAX15054AUT+T datasheet under 70°C ambient conditions.
Does the MAX15054AUT+T require an external bootstrap diode, and what type is recommended?
Yes, the MAX15054AUT+T requires an external Schottky diode between VDD and BST to charge the bootstrap capacitor (CBST). A low-forward-voltage, fast-recovery Schottky diode such as the PMEG3010AEH (30V, 1A, 0.37V VF) is recommended. This minimizes voltage drop during charging, ensuring adequate BST-LX voltage for HDRV high-state operation. The diode must withstand reverse voltage up to VDD and exhibit low capacitance (<50pF) to avoid slowing bootstrap recharge - critical for duty cycles >95% in the MAX15054AUT+T application.
How does the MAX15054AUT+T handle undervoltage conditions on both VDD and BST-LX supplies?
The MAX15054AUT+T implements independent undervoltage lockout (UVLO) for both VDD and BST-LX. VDD UVLO triggers at 4.22V (rising) with 0.2V hysteresis, forcing HDRV low if supply drops. BST-LX UVLO activates at 3.82V (rising relative to LX), also with 0.2V hysteresis, disabling HDRV until bootstrap voltage recovers. Both thresholds are temperature-compensated and monitored continuously. During startup, the internal charging circuit precharges CBST via the external diode, allowing controlled entry into normal operation - a behavior explicitly characterized in the MAX15054AUT+T datasheet's power-up sequence figures.
Is the MAX15054AUT+T pin-compatible with other Maxim/Analog Devices high-side drivers like the MAX15055?
No, the MAX15054AUT+T is not pin-compatible with the MAX15055 or other members of the MAX150xx family. While both are 6-pin SOT23 high-side drivers, the MAX15055 features different pin assignments (e.g., EN instead of HI, different BST/LX configuration) and distinct UVLO thresholds and drive strength. Pinout validation confirms MAX15054AUT+T uses HI/GND/VDD/BST/HDRV/LX ordering - any substitution requires PCB redesign. The MAX15054AUT+T datasheet explicitly states its unique pin configuration and does not list pin compatibility with alternate variants.
MAX15054AUT+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Driven Configuration:
- High-Side
- Channel Type:
- Single
- Number of Drivers:
- 1
- Gate Type:
- N-Channel MOSFET
- Voltage - Supply:
- 4.6V ~ 5.5V
- Logic Voltage - VIL, VIH:
- 1.8V, 3.9V
- Current - Peak Output (Source, Sink):
- 2.5A, 2.5A
- Input Type:
- Non-Inverting
- High Side Voltage - Max (Bootstrap):
- 65 V
- Rise / Fall Time (Typ):
- 18ns, 16ns
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-6
MAX15054AUT+T FAQ
1.How can I place an order for MAX15054AUT+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX15054AUT+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 MAX15054AUT+T reliable?
The price and inventory of MAX15054AUT+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX15054AUT+T is usually 5 days.
3.What payment methods are accepted for MAX15054AUT+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX15054AUT+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX15054AUT+T?
MAX15054AUT+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX15054AUT+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 MAX15054AUT+T?
For technical support, including MAX15054AUT+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX15054AUT+T requirements.
6.How does Aetrix verify that MAX15054AUT+T is sourced from the original manufacturer or authorized distributors?
All MAX15054AUT+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 MAX15054AUT+T meets industry standards.
7.What is the process for return or replacement of MAX15054AUT+T?
All MAX15054AUT+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX15054AUT+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 MAX15054AUT+T part is unused and in its original packaging.
Return procedure for MAX15054AUT+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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