Texas Instruments LM61440
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. The LM61440 implements soft recovery from dropout eliminating overshoot on the output.| Part No. | LM61440 |
|---|---|
| Datasheet | LM61440 Download |
| Manufacturer |  Texas Instruments |
| Description | Low EMI Synchronous Step-Down Converter |
| Buy | Stock & Price |
FEATURES
● 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) 2
APPLICATIONS
● USB type-C● Industrial robot: CPU board
● Industrial PC: single board computer
● Test and measurement instrumentation Simplified Schematic 3
DESCRIPTION
The LM61440 is specifically designed for minimal EMI.
