Analog Devices Inc./Maxim Integrated MAX8795AGCJ/V+

Overview

The MAX8795AGCJ/V+ from Maxim Integrated is a TFT-LCD power management IC integrating a 1.2MHz current-mode step-up DC-DC converter (VMAIN up to 18V), dual linear-regulator controllers for VGON/VGOFF, five rail-to-rail op amps (±130mA output, 45V/µs slew rate, 20MHz bandwidth), and a logic-controlled high-voltage switch with adjustable delay-designed for notebook display power rails and gamma/VCOM driving.

For engineers reviewing the MAX8795AGCJ/V+ datasheet, MAX8795AGCJ/V+ pinout, MAX8795AGCJ/V+ application, or MAX8795AGCJ/V+ equivalent, this device supports automotive-grade (-40°C to +105°C) LCD panel power sequencing, precise gate-driver voltage regulation, and high-current analog signal conditioning in ultra-thin LQFP packages.

Technical Context

The MAX8795AGCJ/V+ implements a single-inductor, current-mode boost topology with integrated 20V/3A n-channel MOSFET (RLX(ON) ≤ 300mΩ), enabling compact 1.2MHz switching and >85% efficiency under pulsed loads. Its feedback architecture includes independent FB (1.233V), FBP (1.25V), and FBN (1.000V) inputs for main, gate-on, and gate-off regulators respectively.

Five op amps share a common SUP rail (6–18V), feature rail-to-rail I/O, ±75mA continuous output, and are configured for VCOM buffering or gamma-divider string driving. The SRC/DRN/COM high-voltage switch pair supports programmable timing via DEL capacitor and logic-level CTL control with sub-100ns propagation delay.

Key Specifications

Pinout & Package

MAX8795AGCJ/V+ uses a 32-pin LQFP package (10mm × 10mm, 0.8mm pitch) with exposed paddle (EP) connected to AGND. Pin functions are validated per Maxim's official datasheet Rev 5 (May 2012).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar TFT-LCD power management applications.

Compared with MAX8795AGTJ/V+, the MAX8795AGCJ/V+ offers identical electrical performance and automotive qualification but in a larger, more manufacturable LQFP package - ideal for prototyping and medium-volume industrial designs where thermal mass and hand-soldering tolerance matter.

Availability

MAX8795AGCJ/V+ is available at Aetrix Electronics and suitable for automotive instrument clusters, notebook computer displays, and industrial HMIs requiring stable component supply with guaranteed long-term availability and traceable sourcing.

Supply support for MAX8795AGCJ/V+ 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 precision analog and mixed-signal ICs for power management, sensing, and interface applications in automotive, industrial, and computing markets.

The MAX8795A product line targets TFT-LCD display power systems, integrating step-up conversion, gate-driver bias generation, and analog signal conditioning into single-package solutions for reduced bill-of-materials and improved reliability.

FAQ

What is the maximum allowable input voltage for MAX8795AGCJ/V+?

The MAX8795AGCJ/V+ supports an input supply range of 2.5V to 5.5V continuously. Operation between 5.5V and 6.0V is permitted for no more than 1% of the IC's lifetime per Maxim's datasheet Note 2. Exceeding 6.0V violates absolute maximum ratings and risks permanent damage to the IN pin and internal circuitry of the MAX8795AGCJ/V+.

Does MAX8795AGCJ/V+ include built-in protection features?

Yes, the MAX8795AGCJ/V+ integrates timer-delayed fault latching for all regulator outputs (triggered after 200ms if FB/FBP falls below threshold or FBN rises above threshold), thermal overload protection with +160°C trip/+145°C hysteresis, and undervoltage lockout (UVLO) with 2.25V rising threshold and 50mV hysteresis - all confirmed in the Electrical Characteristics table on page 7 of the MAX8795AGCJ/V+ datasheet.

Can the five operational amplifiers in MAX8795AGCJ/V+ drive capacitive loads directly?

The MAX8795AGCJ/V+ op amps are specified for rail-to-rail output swing and ±130mA short-circuit current, but their stability with capacitive loads depends on external compensation. The datasheet recommends limiting capacitive loading to ≤100pF without series resistance; for larger loads (e.g., gamma string capacitance), a 10Ω isolation resistor in series with the output is required to maintain phase margin and prevent oscillation in the MAX8795AGCJ/V+ op amp stage.

What is the purpose of the DEL pin on MAX8795AGCJ/V+?

The DEL pin on MAX8795AGCJ/V+ controls startup timing of the high-voltage SRC↔COM and DRN↔COM switches. A capacitor connected from DEL to AGND charges at 5µA (typical), and the switch activates when DEL reaches 1.25V. This provides programmable delay (tDELAY ≈ 1.25V × CDEL / 5µA) to coordinate power sequencing - for example, ensuring VMAIN is stable before enabling gate-driver supplies in the MAX8795AGCJ/V+ system.

How does the /V+ suffix affect MAX8795AGCJ/V+ qualification?

Per Maxim's Ordering Information table, the /V+ suffix denotes automotive qualification: the MAX8795AGCJ/V+ is tested and certified to AEC-Q100 Grade 2 standards (−40°C to +105°C operating range), includes HTOL stress screening, and undergoes enhanced process controls for zero-defect manufacturing. This differs from non-/V+ variants like MAX8795AGCJ+ which lack formal automotive qualification despite sharing identical silicon.