LMR23615 Synchronous Step-Down Converters

LMR23615 Synchronous Step-Down Converters

Texas Instruments' LMR23615 SIMPLE SWITCHER are easy-to-use 36 V, 1.5 A synchronous step-down regulators. With a wide input range from 4 V to 36 V, the devices are suitable for various industrial applications for power conditioning from unregulated sources. Peak current mode control is employed to achieve simple control-loop compensation and cycle-by-cycle current limiting. A quiescent current of 75 µA makes the devices suitable for battery-powered systems. An ultra-low 2 µA shutdown current can further prolong battery life. Internal loop compensation means that the user is free from the tedious task of loop-compensation design and also minimizes the external components needed. An extended family is available in 2.5 A (LMR23625/LMR23625-Q1) and 3 A (LMR23630/LMR23630-Q1) load-current options in pin-to-pin compatible packages, allowing simple, optimum PCB layout. A precision enable-input allows simplification of regulator control and system power sequencing. Protection features include cycle-by-cycle current limit, hiccup-mode short-circuit protection, and thermal shutdown due to excessive power dissipation.

Features
  • Qualified for automotive applications (LMR23615-Q1)
  • AEC-Q100 qualified with the following results (LMR23615-Q1):
    • Device temperature grade 1: -40°C to +125°C ambient operating temperature
    • Device HBM ESD classification level H2
    • Device CDM ESD classification level C4A
  • 4 V to 36 V input range
  • 1.5 A continuous output current
  • Integrated synchronous rectification
  • Current-mode control with internal compensation
  • Minimum switch ON-time: 60 ns
  • Adjustable switching frequency
  • PFM mode at light load
  • Frequency synchronization to external clock
  • 75 µA quiescent current
  • Soft start into a pre-biased load
  • High-duty-cycle operation supported
  • Output short-circuit protection with hiccup mode
  • Thermal protection
  • 12-pin WSON wettable flanks package with PowerPAD™
  • Create a custom design using the LMR23615 with the WEBENCH® power designer
LMR23615 Applications LMR23615-Q1 Applications
  • Factory and building automation systems: PLC CPU, HVAC control, elevator control
  • GSM, GPRS modules for fleet management, smart grids, and security
  • General purpose wide VIN regulation
  • Automotive infotainment: clusters, head unit, heads-up display
  • USB charging
  • General off-battery power application
Manufacturer