Texas Instruments' LMR23615DRRT 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.<strong>Features:</strong> 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 LMR23615DRRT with the WEBENCH® power designer, 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
Feature
- 4-V to 36-V Input Range
- 1.5-A Continuous OutputCurrent
- Integrated Synchronous Rectification
- Current-Mode Control with internal compensation
- Minimum SwitchON-Time: 60 ns
- Adjustable Switching Frequency
- PFM Mode at Light Load
- Frequency Synchronization to ExternalClock
- 75-μA Quiescent Current
- Soft Start into a Prebiased Load
- High-Duty-Cycle OperationSupported
- Output Short-Circuit Protection With Hiccup Mode
- Thermal Protection
- 12-Pin WSON WettableFlanks Package With PowerPAD?
- Create a Custom Design Using the LMR23615 With theWEBENCH? Power Designer
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Description
The LMR23615 SIMPLE SWITCHER? is aneasy-to-use 36-V, 1.5-A synchronous step-down regulator. With a wide input range from 4 V to 36 V,the device is suitable for various industrial applications for power conditioning from unregulatedsources. Peak current mode control is employed to achieve simple control-loop compensation andcycle-by-cycle current limiting. A quiescent current of 75 μA makes the device suitable forbattery-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-compensationdesign and also minimizes the external components needed. An extended family is available in 2.5-A(LMR23625) and 3-A (LMR23630) load-current options in pin-to-pin compatible packages, allowingsimple, optimum PCB layout. A precision enable input allows simplification of regulator control andsystem power sequencing. Protection features include cycle-by-cycle current limit, hiccup-modeshort-circuit protection, and thermal shutdown due to excessive power dissipation.
