LMR23625CDDA

The LMR23625 SIMPLE SWITCHER is an easy-to-use 36V, 2.5A synchronous buck regulator. The device features a wide 4V–36V input voltage range, making it suitable for a variety of industrial applications requiring power regulation from unregulated sources. Peak current mode control is employed for simplified control loop compensation and cycle-by-cycle current limiting. With a quiescent current of 75μA, the device is well suited for battery-powered systems. The ultra-low shutdown current further extends battery life. Internal loop compensation eliminates the tedious task of designing loop compensation components, while also minimizing the external component count. An optional fixed-frequency FPWM mode is available to achieve low output voltage ripple under light-load conditions. The HSOIC extended product family offers 1A (LMR23610) and 3A (LMR23630) load current options in pin-to-pin compatible packages, enabling simple and optimized PCB layout. A precision enable input simplifies regulator control and system power sequencing. Protection features include cycle-by-cycle current limiting, hiccup mode short-circuit protection, and thermal shutdown triggered by excessive power dissipation.

Applications

• Factory and building automation systems: PLC CPU, HVAC control, elevator control
• GSM and GPRS modules for fleet management, smart grid, and security applications
• General-purpose wide input voltage regulation

Key features

• 4V to 36V input voltage range
• 2.5A continuous output current
• Integrated synchronous rectification
• Current mode control
• Minimum on-time: 60ns
• 2.1MHz switching frequency with PFM and forced PWM mode options (HSOIC)
• 2.1MHz switching frequency with forced PWM mode only (WSON)
• Synchronization to external clock frequency
• Built-in compensation for ease of use
• 75μA quiescent current at no-load condition
• Soft-start into pre-biased loads
• High duty cycle operation support
• Precision enable input
• Output short-circuit protection with hiccup mode
• Thermal shutdown protection
• 8-pin HSOIC package with PowerPAD
• 12-pin WSON wettable flank package with PowerPAD
• Reduce time-to-market using LMZM33603 module
• Create custom designs using LMR23625 with WEBENCH Power Designer