3.5V to 36V, 2A, High-Efficiency, Synchronous Step-Down DC-DC Converter

The Himalaya series of voltage regulator ICs, power modules, and chargers enables cooler, smaller, and simpler power supply solutions. The MAX17662 is a high-efficiency, Himalaya synchronous step-down DC-DC converter with integrated MOSFETs operating over an input-voltage range of 3.5V to 36V. It can deliver up to 2A current. Output voltage is programmable from 0.6V up to 90% of VIN. Built-in compensation across the output-voltage range eliminates the need for external compensation components.

The MAX17662 features a peak-current-mode control architecture. The MAX17662 can be operated in forced pulse-width modulation (PWM), or discontinuous-conduction mode (DCM) to enable high efficiency under full-load and light-load conditions. The MAX17662 offers a low minimum on-time that allows high switching frequencies and a smaller solution size.

The feedback-voltage regulation accuracy over -40°C to +125°C is ±1.33%. The device is available in a 16-pin (3mm x 3mm) TQFN-EP package. Simulation models are available.

Applications

* Base Station Power Supplies * Distributed Supply Regulation * General-Purpose Point-of-Load * High-Voltage, Single-Board Systems * Industrial Control Power Supplies * Wall Transformer Regulation

* Reduces External Components and Total Cost

* No Schottky—Synchronous Operation

* Internal Compensation Components

* All-Ceramic Capacitors, Compact Layout

* Reduces Number of DC-DC Regulators to Stock

* Wide 3.5V to 36V Input

* Adjustable Output Voltage Range from 0.6V up to 90% of VIN

* Delivers Up to 2A Over the Temperature Range

* 400kHz to 2.2MHz Adjustable Frequency

* Reduces Power Dissipation

* Peak Efficiency of 95%

* DCM Mode Enable Enhanced Light-Load Efficiency

* Wide 2.4V to 12V Bootstrap Bias Input (EXTVCC) for Improved Efficiency

* 6.5μA Shutdown Current

* Operates Reliably in Adverse Industrial Environments

* Hiccup-Mode Overload Protection

* Adjustable and Monotonic Startup with Prebiased Output Voltage

* Built-in Output-Voltage Monitoring with Active-Low RESET

* Programmable EN/UVLO Threshold

* Overtemperature Protection

* CISPR 32 Class B Compliance

* Wide Industrial -40°C to +125°C Ambient Operating Temperature Range/-40°C to +150°C Junction Temperature Range