SNVSCJ2 December 2023 LMR66410-Q1 , LMR66420-Q1 , LMR66430-Q1
PRODUCTION DATA
The LMR664x0-Q1 is a small 36-V, 3-A (available in 2-A and 1-A variants) synchronous step-down DC/DC converter in an enhanced HotRod QFN package. This easy-to-use converter supports a wide input voltage range of 2.7 V to 36 V (after start-up or after operating) with transients up to 42 V.
The LMR664x0-Q1 is
specifically designed to meet low standby power requirements for always-on, automotive
applications. Auto mode enables frequency foldback when operating at light loads,
allowing an unloaded typical current consumption of 1.5 µA at 13.5 VIN
and high light load efficiency. A seamless transition between PWM and PFM modes
along with very low MOSFET ON resistances makes sure there is exceptional efficiency
across the entire load range. The control architecture (peak current mode) and
feature set are optimized for an ultra-small design size with minimal output
capacitance. The device minimizes input filter size by using dual-random spread
spectrum (DRSS), a low-EMI enhanced HotRod QFN package, and an optimized
pin-out. The MODE/SYNC pin
can be used to set or synchronize the frequency to avoid noise sensitive
frequency bands. There are NC pins between critical high voltage pins, reducing potential
failures (optimal pin FMEA). The rich feature set of the
LMR664x0-Q1 is designed
to simplify implementation for a wide range of automotive end
equipment.
PART NUMBER | PACKAGE (1) | PACKAGE SIZE(2) |
---|---|---|
LMR66430-Q1 | RXB (VQFN, 14) | 2.60 mm × 2.60 mm |
LMR66420-Q1 | ||
LMR66410-Q1 |
PART NUMBER | RATED OUTPUT CURRENT (1) |
---|---|
LMR66430-Q1 | 3 A |
LMR66420-Q1 | 2 A |
LMR66410-Q1 | 1 A |