Analog Devices Inc./Maxim Integrated MAX1518EVKIT

Overview

MAX1518EVKIT from Maxim Integrated is an evaluation kit for the MAX1518 TFT-LCD DC-DC converter IC, which integrates a 1.2MHz step-up regulator, gate-on/gate-off linear-regulator controllers, five rail-to-rail op-amps (±150mA, 13V/µs), and a logic-controlled high-voltage switch. It delivers +13V main supply, +24V gate-on, and –8V gate-off outputs for active-matrix LCD panels in notebook computers and automotive displays.

For engineers reviewing the MAX1518EVKIT datasheet, MAX1518EVKIT setup guide, MAX1518EVKIT test procedure, or MAX1518EVKIT compatible IC alternatives, this kit enables rapid validation of power sequencing, gamma correction amplifier performance, gate-driver timing control, and fault-latch behavior under pulsed load conditions typical of TFT source drivers.

Technical Context

The MAX1518EVKIT implements the full reference design for the MAX1518 IC per Figure 1 of the datasheet, supporting simultaneous generation of VMAIN (13V/500mA), VGON (24V/20mA), and VGOFF (–8V/50mA) from a 4.5–5.5V input. It validates all integrated functions: current-mode step-up regulation with digital soft-start, dual linear-regulator controllers with adjustable delay via DEL capacitor, and five operational amplifiers configured for VCOM buffering and gamma string driving.

Board-level features include populated external components-Sumida CDRH6D28-3R0 inductor, TDK C3225X5R0J227M/C4532X5X1C226M capacitors, Toshiba CMS02 Schottky diode, and Fairchild MMBT3904/3906 transistors-as specified in Table 1. The kit supports real-time measurement of efficiency (>85% at 500mA), transient response (200mA step, <200mV droop), and op-amp slew rate (13V/µs) using standard lab equipment.

Key Specifications

Availability

MAX1518EVKIT is available at Aetrix Electronics and suitable for notebook computer display development, automotive LCD panel qualification, and industrial HMI power architecture prototyping requiring stable component supply and documented reference designs.

Supply support for MAX1518EVKIT 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) is a semiconductor company specializing in precision analog, mixed-signal, and power management solutions for demanding applications including automotive, industrial, and consumer electronics.

The MAX1518EVKIT belongs to Maxim's TFT-LCD power management product line, designed specifically to simplify high-reliability, ultra-thin display power system development with integrated sequencing, fault protection, and multi-rail op-amp support.

FAQ

What is the primary function of the MAX1518EVKIT?

The MAX1518EVKIT is a fully assembled evaluation platform for the MAX1518 IC, enabling engineers to validate its complete power solution for TFT-LCD panels-including 13V main supply generation, +24V gate-on and –8V gate-off regulation, five high-current op-amps for gamma/VCOM, and programmable timing control. It replicates the exact circuit shown in Figure 1 of the MAX1518 datasheet.

Does the MAX1518EVKIT support testing of the MAX1518's op-amp performance?

Yes, the MAX1518EVKIT provides direct access to all five op-amp inputs and outputs (POS1–POS5, NEG1–NEG5, OUT1–OUT5) with proper bypassing and layout. It allows measurement of key parameters including ±150mA short-circuit current, 13V/µs slew rate, 12MHz bandwidth, and rail-to-rail operation-verified using the buffer configuration shown in the MAX1518 typical operating characteristics.

Can the MAX1518EVKIT be used to evaluate gate-driver sequencing timing?

Yes, the MAX1518EVKIT implements the DEL and CTL pins as described in the MAX1518 datasheet, allowing adjustment of startup delay via an external capacitor and logic-controlled switching between SRC and DRN paths. This enables precise validation of VGOFF-first sequencing to prevent TFT panel latch-up during power-up.

What external components are pre-installed on the MAX1518EVKIT board?

The MAX1518EVKIT includes all critical external components listed in Table 1 of the MAX1518 datasheet: Sumida CDRH6D28-3R0 inductor, TDK C3225X5R0J227M (22µF/6.3V) and C4532X5X1C226M (22µF/16V) ceramic capacitors, Toshiba CMS02 Schottky diode, and Fairchild MMBT3904/3906 transistors-ensuring out-of-box functionality per the reference design.

Is thermal performance validated on the MAX1518EVKIT?

Yes, the MAX1518EVKIT layout follows Maxim's thermal guidelines: PGND and AGND planes are connected underneath the IC, SUP is bypassed to BGND with 0.1µF, and high-current traces (LX, SRC, COM) are widened. It supports thermal shutdown verification at +150°C junction temperature and confirms stable operation up to +100°C ambient per the MAX1518's specified operating range.