Analog Devices Inc./Maxim Integrated MAX15025AATB+T

Overview

The MAX15025AATB+T from Maxim Integrated is a dual-channel, high-speed MOSFET gate driver optimized for synchronous rectifier and switching power supply applications. It delivers 4A peak sink / 2A peak source current per channel, features 16ns propagation delay, operates from 4.5V to 28V supply, and integrates an adjustable LDO for precise gate-drive amplitude control in automotive-grade (-40°C to +125°C) TDFN-EP packaging.

For engineers reviewing the MAX15025AATB+T datasheet, MAX15025AATB+T pinout, MAX15025AATB+T application, or MAX15025AATB+T equivalent, key selection criteria include matched inter-channel propagation delays (±9ns), TTL-compatible logic inputs with hysteresis, independent output driver supply (DRV), and AEC-Q100 qualification for automotive power systems.

Technical Context

The MAX15025AATB+T implements two independent gate drivers with matched timing paths-propagation delay mismatch between channels is guaranteed ≤ ±9ns at 1nF load. Each channel uses complementary predriver stages feeding p-channel source and n-channel sink outputs, enabling fast, controlled MOSFET turn-on/turn-off with minimal shoot-through risk.

Its integrated LDO regulator (VREG) is adjustable via FB/SET pin using external resistive divider, delivering stable output from 9V to 11V (typical 10V when FB/SET grounded). The separate DRV supply input allows independent biasing of output stages, supporting soft-start and gate voltage optimization in synchronous rectifiers.

Key Specifications

Availability

MAX15025AATB+T is available at Aetrix Electronics and suitable for synchronous rectifier drivers, power-supply modules, and switching power supplies requiring stable component supply across automotive and industrial temperature ranges.

Supply support for MAX15025AATB+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

Maxim Integrated (now part of Analog Devices) designs high-performance analog and mixed-signal ICs for power management, interface, and sensing applications.

The MAX15025AATB+T belongs to Maxim's high-speed gate driver product line, engineered specifically for high-efficiency, high-frequency DC-DC conversion in automotive and industrial power systems.

FAQ

What is the function of the FB/SET pin on the MAX15025AATB+T?

The FB/SET pin on the MAX15025AATB+T provides feedback for the internal LDO regulator (VREG). When connected to GND, it configures VREG for a fixed 10V output. When connected to a resistor divider between VREG and GND, it enables programmable VREG output from 9V to 11V - allowing precise gate-drive voltage tuning to optimize MOSFET conduction losses and switching speed in the final design using MAX15025AATB+T.

Does the MAX15025AATB+T support independent supply rails for logic and output stages?

Yes, the MAX15025AATB+T supports independent supply rails: VCC powers internal circuitry and the LDO, while DRV supplies only the output driver stage. This separation enables soft-start sequencing, gate voltage limiting, and isolation of high-current switching transients from sensitive logic sections - a critical capability confirmed in the MAX15025AATB+T datasheet for robust operation in synchronous rectifier topologies.

What is the maximum capacitive load the MAX15025AATB+T can drive reliably?

The MAX15025AATB+T is rated for up to 100nF load capacitance per channel under safe operating area (SOA) conditions where CL × VDRV² ≤ 20µJ. At VDRV = 10V, this corresponds to 200nF; however, the datasheet specifies 100nF as the validated maximum for guaranteed performance including rise/fall time and thermal stability - a limit directly tied to the 4A/2A peak current capability and thermal design of the 10-pin TDFN-EP package used in MAX15025AATB+T.

How does the MAX15025AATB+T ensure timing accuracy between its two channels?

The MAX15025AATB+T guarantees matched propagation delays between its two output channels with a maximum mismatch of ±9ns (at 1nF load, 10V supply), as specified in the Electrical Characteristics table. This matching is achieved through matched internal predriver paths and layout symmetry - enabling precise dead-time control and minimizing shoot-through risk in half-bridge configurations driven by MAX15025AATB+T.

Is the MAX15025AATB+T qualified for automotive applications?

Yes, the MAX15025AATB+T is AEC-Q100 qualified (Grade 1) and specified over the full -40°C to +125°C ambient temperature range. Its 10-pin thermally enhanced TDFN-EP package, integrated thermal shutdown (+160°C trip), and robust input hysteresis (0.4V) are all designed to meet automotive reliability requirements - making MAX15025AATB+T suitable for engine control units, ADAS power stages, and other under-hood applications.