LM61440
Overview
The LM61440 is a high-performance, DC-DC synchronous step-down converter. With integrated high-side and low-side MOSFETs, up to 4 A of output current is delivered over a wide input range of 3.0 V to 36 V; tolerant of 42 V, easing input surge protection design.
- Functional Safety-Capable - Documentation available to aid functional safety system design
- Optimized for ultra low EMI requirements - Hotrod™ package and parallel input path minimize switch node ringing - Parallel input path minimizes parasitic inductance - Adjustable SW node rise time
- Designed for reliable and rugged applications - Supports 42-V transients - ±1% total output regulation accuracy - VOUT adjustable from 1 V to 95% of VIN - 0.3-V dropout with 3-A load (typical)
- High efficiency power conversion at all loads - 7-µA no load current at 13.5 VIN, 3.3 VOUT - 83% PFM efficiency at 1-mA, 13.5 VIN, 5 VOUT - Low MOSFET ON resistance
- RDS_ON_HS = 41 mΩ (typical)
- RDS_ON_LS = 21 mΩ (typical) - External bias option for improved efficiency
- Suitable for scalable power supplies - Pin compatible with:
- LM61440-Q1 (36 V, 4 A, adjustable fSW)
- LM61460 (36 V, 6 A, adjustable fSW)
