Description：

The LM5012 non-synchronous buck converter isdesigned to regulate over a wide input voltage range,minimizing the need for external surge suppressioncomponents. A minimum controllable on time of 50 nsfacilitates large step-down conversion ratios, enablingthe direct step-down from a 48-V nominal input tolow-voltage rails for reduced system complexity andsolution cost. The LM5012 operates during inputvoltage dips as low as 6 V, at nearly 100% dutycycle if needed, making it an excellent choice for highperformance industrial applications.With integrated high-side power MOSFET, theLM5012 delivers up to 2.5 A of output current. Aconstant on-time (COT) control architecture providesnearly constant switching frequency with excellentload and line transient response. Additional featuresof the LM5012 include ultra-low IQ and a innovativepeak overcurrent protection, integrated VCC biassupply and bootstrap diode, precision enable andinput UVLO, and thermal shutdown protection withautomatic recovery. An open-drain PGOOD indicatorprovides sequencing, fault reporting, and outputvoltage monitoring.The LM5012 is available in a 8-pin SO PowerPAD™integrated circuit package. The device 1.27-mm pinpitch provides adequate spacing for high-voltageapplications

Features：

• Designed for reliable and rugged applications

– Wide input voltage range of 6 V to 100 V

– –40°C to +125°C junction temperature range

– Fixed 3-ms internal soft-start timer

– Peak current-limit protection

– Input UVLO and thermal shutdown protection

• Functional Safety-Capable

– Documentation available to aid functional safetysystem design

• Optimized for ultra-low EMI requirements

– Meets CISPR 25 Class 5 standard

• Suited for scalable industrial power supplies

– Pin-to-pin compatible with the LM5163 andLM5164 (100 V, 0.5 A or 1 A), and LM5013-Q1(100 V, 3.5A)

– 50-ns low minimum on and off times

– Diode emulation for high light-load efficiency

– 10-µA no-load sleep current

– 3.1-µA shutdown quiescent current

• Integration reduces solution size and cost

– COT mode control architecture

– Integrated 100-V 0.25-Ω power MOSFET

– 1.2-V internal voltage reference

– No loop compensation components

– Internal VCC bias regulator and boot diode

• Create a custom regulator design usingWEBENCH® Power Designer

 Applications：

• Hybrid, electric, and powertrain systems

• Inverter and motor control

• Industrial transport