Texas Instruments LMQ664x0 Step-Down Converters

Texas Instruments LMQ664x0 Step-Down Converters
Texas Instruments LMQ664x0 Synchronous Buck Converter is a 36V, 3A synchronous step-down DC/DC converter with integrated bypass and bootstrap capacitors. These devices are available in an Enhanced HotRod™ QFN package. The converter is simple to use and supports a wide input voltage range from 2.7V to 36V with transient voltages up to 42V.
The LMQ664x0 are designed to meet the low standby power requirements of always-on industrial applications. Auto mode enables frequency foldback at light loads, resulting in 1.5µA no-load current consumption at 13.5VIN and high light-load efficiency. Seamless transitions between PWM and PFM modes and very low MOSFET on-resistance enable excellent efficiency over the entire load range. The control architecture and feature set are optimized for an ultra-small solution size with minimum output capacitance. The device is packaged in a dual random spread spectrum, low EMI enhanced HotRod™ QFN package with optimized pinout to minimize input filter size. MODE/SYNC and RT pin models can be used to set or synchronize frequency to avoid noise sensitive frequency bands. There are NCs between critical high voltage pins to reduce potential failure. Texas Instruments LMQ664x0 is feature-rich and designed to simplify the implementation of a wide variety of industrial end-equipment.

characteristic
Designed for industrial applications.
Junction temperature range: –40°C to +150°C
NC pins between critical pins for increased reliability
Best-in-Class Pin FMEA
Input transient protection up to 42V
Wide Input Voltage Range After Startup: 2.7V to 36V
Adjustable Output Up to 95% of VIN, 3.3V and 5V Fixed VOUT Options
Supports functional safety
Documentation to aid functional safety system design
Greater than 85% efficiency at 1mA
Optimized for Low EMI Requirements
Integrated bypass and bootstrap capacitors reduce EMI
Dual Random Spread Spectrum Reduces Peak Emissions
Enhanced HotRod™ QFN package minimizes switch node ringing
Adjustable FSW: 200kHz–2.2MHz with RT pin
Tiny solution size and low component cost
Integrated input bypass capacitor and bootstrap capacitor reduce EMI
2.6mm × 2.6mm Enhanced HotRod™ QFN Package with Wettable Flanks
internal compensation
application
Factory Automation: PLC, DCS and PAC
Test and Measurement
the medical
Aerospace & Defense