LM60440
36-V, 4-A synchronous converter in an enhanced EMI QFN package with wettable flank and external pad
LM60440
- Functional Safety-Capable
- Documentation available to aid functional safety system design
- Low EMI and switching noise
- Meets CISPR22 class 5 standard
- Enhanced QFN package minimizes parasitic inductance and switch node ringing
- Configured for rugged industrial applications
- High efficiency power conversion at all loads
- Peak efficiency > 95%
- 90% PFM efficiency at 10-mA, 12 VIN, 5 VOUT
- Low operating quiescent current of 25 µA
- Create a custom design using the LM60440 with the WEBENCH® Power Designer
The LM604x0 regulator is an easy-to-use, synchronous, step-down DC/DC converter that delivers best-in-class efficiency for rugged industrial applications. The LM60430 drives up to 3-A of load current, and the LM60440 is industrys smallest 4A step-down converter.
The LM604x0 is available in an ultra-miniature WQFN package with wettable flanks and a standard QFN pin-out with a thermal pad to enhance thermal performance. This enhanced QFN package features extremely small parasitic inductance and resistance, enabling very high efficiency while minimizing switch node ringing and dramatically reducing EMI.
The LM604x0 uses peak-current-mode control to automatically fold back frequency at light load to ensure exceptional efficiency across the entire load range. The low power dissipation paired with a thermally optimized QFN package enables a power dense solution size. In addition the device requires few external components and has a pinout designed for simple PCB layout. The small solution size and feature set of the LM604x0 are designed to simplify implementation for a wide range of end equipment.
This device is also available in an AEC-Q100-qualified version.
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Technical documentation
Type | Title | Date | ||
---|---|---|---|---|
* | Data sheet | LM604x0 3.8-V to 36-V, 3-A, and 4-A Ultra-Small Synchronous Step-Down Converter datasheet (Rev. A) | PDF | HTML | 18 Jun 2020 |
Application note | Enhanced HotRod QFN Package: Industry-Best Size with Low EMI (Rev. A) | PDF | HTML | 17 Aug 2021 | |
Functional safety information | LM604x0 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA | PDF | HTML | 01 Oct 2020 | |
EVM User's guide | LM60440AQEVM User's Guide | 08 Oct 2019 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.
LM60440AQEVM — 36-V, 4-A, 2x3-mm synchronous step-down converter evaluation module
Package | Pins | CAD symbols, footprints & 3D models |
---|---|---|
WQFN-FCRLF (RPK) | 13 | Ultra Librarian |
Ordering & quality
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
- Fab location
- Assembly location
Support & training
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