Analog Devices Inc./Maxim Integrated MAX17250EVKIT#TDFN

Overview

MAX17250EVKIT#TDFN from Maxim Integrated is an evaluation kit for the MAX17250 synchronous boost converter IC, supporting input voltages from 2.7V to 18V and output voltages from 3V to 18V. It implements True Shutdown™ (0.1μA shutdown current), selectable input peak current limit (1.85A/2.7A/3.5A), and fixed on-time PFM control with 800ns max on-time. The kit is built around the 14-pin TDFN-packaged MAX17250ATD+ variant and targets battery-powered IoT devices and display supply applications.

For engineers reviewing the MAX17250EVKIT#TDFN datasheet, MAX17250EVKIT#TDFN pinout, MAX17250EVKIT#TDFN application, or MAX17250EVKIT#TDFN equivalent, this page provides verified hardware configuration details, thermal layout guidance, supported operating modes (soft-start, normal PFM, True Shutdown), measured efficiency curves (up to 93%), and validated component selection rules for CIN, COUT, CPVH, and inductor per output voltage range.

Technical Context

The MAX17250EVKIT#TDFN implements a fixed on-time, minimum off-time Pulse Frequency Modulation (PFM) architecture optimized for ultra-low quiescent current (60μA typ in normal operation). It supports three operational states: soft-start at power-up, regulated PFM mode with dynamic switching only when needed, and True Shutdown™ with complete input-output isolation and 0.1μA typ shutdown current.

Hardware-level protection includes short-circuit latching, overtemperature lockout at 165°C (15°C hysteresis), input undervoltage lockout at 2.68V (100mV hysteresis), and integrated N-channel FETs with RDS(ON) as low as 95mΩ (ISET = VL). The kit validates design parameters for the 14-pin TDFN package, including θJA = 41°C/W (four-layer board) and PGND-exposed pad thermal vias.

Key Specifications

Availability

MAX17250EVKIT#TDFN is available at Aetrix Electronics and suitable for battery-powered IoT device development, display supply validation, and buzzer/alarm driver prototyping requiring stable component supply and full design support.

Supply support for MAX17250EVKIT#TDFN 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 semiconductor solutions for power management, sensing, and interface applications.

The MAX17250 product line delivers ultra-low-power synchronous boost converters for space-constrained, battery-sensitive systems - specifically engineered for long-life operation in digital cameras, wearables, and remote sensors.

FAQ

What is the purpose of the MAX17250EVKIT#TDFN evaluation kit?

The MAX17250EVKIT#TDFN is a fully assembled and tested evaluation platform for the MAX17250ATD+ 14-pin TDFN synchronous boost converter. It enables rapid validation of key performance metrics - including efficiency across load and input voltage ranges, True Shutdown™ current, startup behavior, and short-circuit response - using the exact component layout, decoupling, and thermal design recommended by Maxim Integrated. Engineers use the MAX17250EVKIT#TDFN to verify system-level integration before committing to custom PCB design.

Which MAX17250 variant does the MAX17250EVKIT#TDFN support?

The MAX17250EVKIT#TDFN is configured for the MAX17250ATD+ variant - the 14-pin TDFN package version rated for -40°C to +125°C operation. It is not compatible with the 12-bump WLP variant (MAX17250ANC+). The kit's land pattern, thermal pad layout, and component placement align precisely with the TDFN mechanical outline (Package Code T1433+2C, Outline Number 21-0137), including the exposed PGND pad requiring ≥6 thermal vias.

Does the MAX17250EVKIT#TDFN include firmware or software tools?

No, the MAX17250EVKIT#TDFN is a hardware-only evaluation platform with no onboard microcontroller, firmware, or USB interface. It operates autonomously once powered and configured via external resistors and jumpers. Configuration is performed through physical components: FB divider resistors (R1, R2, Rz) set output voltage; ISET pin connection (VL, AGND, or open) selects peak current limit (3.5A/2.7A/1.85A); and EN pin controls enable/disable. No software, drivers, or PC connectivity are required or provided with the MAX17250EVKIT#TDFN.

What are the key layout features validated by the MAX17250EVKIT#TDFN?

The MAX17250EVKIT#TDFN validates five critical PCB layout practices: (1) minimal-length, high-current paths for IN, LX, PVH, OUT, and PGND; (2) tight placement of VL decoupling capacitor (2.2µF) directly to AGND; (3) short, noise-isolated FB trace routed away from power loops; (4) ≥6 capped thermal vias under the exposed PGND pad; and (5) proper copper pour sizing for SW node (LX) to minimize EMI. These features are implemented per Maxim's Application Note guidelines and directly support the 41°C/W θJA rating claimed for the TDFN package.

Can the MAX17250EVKIT#TDFN be used to evaluate short-circuit protection behavior?

Yes, the MAX17250EVKIT#TDFN fully demonstrates the MAX17250's short-circuit protection: when OUT is shorted to PGND, the device immediately stops switching and latches off the output. Recovery requires either cycling the input supply or toggling the EN pin low then high. This behavior is confirmed in the kit's oscilloscope waveforms (e.g., Figure toc17 in the datasheet) and matches the specified 2.6–4.25A short-circuit current limit (VIN = VPVH = 5V). The kit's layout ensures reliable triggering and measurement of this protection event without damage.