LMR23630QDRRRQ1

The LMR23630-Q1 SIMPLE SWITCHER is an easy-to-use 36V, 3A synchronous buck regulator. The device features a wide 4V to 36V input range, suitable for voltage regulation of unregulated power supplies in applications ranging from industrial to automotive. Peak current mode control is employed for simple control loop compensation and cycle-by-cycle current limiting. With a quiescent current as low as 75μA, the device is well-suited for battery-powered systems. Internal loop compensation eliminates the tedious task of designing loop compensation components, while also minimizing external component count. The device also features a constant-frequency FPWM mode for reduced output voltage ripple at light loads. The extended product family offers 1A (LMR23610-Q1), 1.5A (LMR23615-Q1), and 2.5A (LMR23625-Q1) 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

• Automotive infotainment systems: instrument cluster, head unit, head-up display
• USB charging
• General battery-powered applications

Key features

• Qualified for automotive applications with the following AEC-Q100 characteristics:
• Device temperature grade 1: ambient operating temperature range of -40°C to +125°C
• Device HBM ESD classification level 2
• Device CDM ESD classification level: SOIC and WSON with RT - Class C4B, WSON with PGOOD - Class C5
• 4V to 36V input range
• 3A continuous output current
• Minimum on-time: 60ns
• Integrated compensation for ease of use
• Choice of 400kHz fixed switching frequency or adjustable switching frequency
• PFM and forced PWM modes available under light load conditions
• Synchronization to external clock frequency
• For PFM option, quiescent current of 75μA at no load
• Power good option
• Soft-start into pre-biased load
• High duty cycle operation support
• Output short-circuit protection with hiccup mode
• 8-pin HSOIC and 12-pin WSON wettable flank with PowerPAD package options
• Use LMR23630-Q1 with WEBENCH Power Designer to create customized designs