LM21212-1 Datasheet | Texas Instruments

Product Folder Order Now Technical Documents Tools & Software Support & munity SNVS671F - FEBRUARY 2011 - REVISED MAY 2019 LM21212-1 2.95-V To 5.5-V, 12-A, Voltage-Mode Synchronous Buck Regulator With Frequency Synchronization 1 Features - 1 Integrated 7-mΩ high-side and 4.3-mΩ low-side FET switches - 300-k Hz to 1.5-MHz frequency SYNC pin - Adjustable output voltage from 0.6 V to VIN (100% duty cycle capable), ±1% reference - Input voltage range 2.95 V to 5.5 V - Start-up Into prebiased loads - Output voltage tracking capability - Wide bandwidth voltage loop error amplifier - Adjustable soft-start with external capacitor - Precision enable (EN) pin with hysteresis - Integrated OVP, OCP, OTP, UVLO and power- good - Thermally enhanced HTSSOP-20 exposed pad package - Create a custom design using the LM21212-1 with the WEBENCH® Power Designer 2 Applications - Broadband, networking and wireless munications - High-performance FPGAs, ASICs and microprocessors - Simple to design, high efficiency point-of-load regulation from a 5-V or 3.3-V bus 3 Description The LM21212-1 is a monolithic synchronous point-ofload buck regulator that is capable of delivering up to 12 A of continuous output current while producing an output voltage down to 0.6 V with outstanding efficiency. The device is optimized to work over an input voltage range of 2.95 V to 5.5 V, making it suited for a wide variety of low voltage systems. The voltage mode control loop provides high noise immunity, narrow duty-cycle capability and can be pensated to be stable with any type of output capacitance, providing maximum flexibility and ease of use. The LM21212-1 Features internal overvoltage protection (OVP) and overcurrent protection (OCP) for increased system reliability. A precision enable pin and integrated UVLO allow turnon of the device to be tightly controlled and sequenced. Start-up inrush currents are limited by both an internally fixed and externally adjustable soft-start...