LMR66420R5RXBR
Active36V, 2A SYNCHRONOUS STEP-DOWN CONVERTER WITH 1.5UA IQ AND LOW EMI
Deep-Dive with AI
Search across all available documentation for this part.
LMR66420R5RXBR
Active36V, 2A SYNCHRONOUS STEP-DOWN CONVERTER WITH 1.5UA IQ AND LOW EMI
Deep-Dive with AI
Technical Specifications
Parameters and characteristics for this part
| Specification | LMR66420R5RXBR |
|---|---|
| Current - Output | 2 A |
| Function | Step-Down |
| Mounting Type | Wettable Flank, Surface Mount |
| Number of Outputs | 1 |
| Operating Temperature [Max] | 125 ¯C |
| Operating Temperature [Min] | -40 °C |
| Output Configuration | Positive |
| Output Type | Adjustable (Fixed) |
| Package / Case | 14-PowerTFQFN |
| Synchronous Rectifier | True |
| Topology | Buck |
| Voltage - Input (Max) [Max] | 36 V |
| Voltage - Output (Max) | 5 V |
| Voltage - Output (Min/Fixed) | 1 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Cut Tape (CT) | 1 | $ 3.21 | |
| 10 | $ 2.88 | |||
| 25 | $ 2.73 | |||
| 100 | $ 2.36 | |||
| 250 | $ 2.24 | |||
| 500 | $ 2.01 | |||
| 1000 | $ 1.70 | |||
| Digi-Reel® | 1 | $ 3.21 | ||
| 10 | $ 2.88 | |||
| 25 | $ 2.73 | |||
| 100 | $ 2.36 | |||
| 250 | $ 2.24 | |||
| 500 | $ 2.01 | |||
| 1000 | $ 1.70 | |||
| Tape & Reel (TR) | 3000 | $ 1.61 | ||
| 6000 | $ 1.55 | |||
| Texas Instruments | LARGE T&R | 1 | $ 2.12 | |
| 100 | $ 1.86 | |||
| 250 | $ 1.30 | |||
| 1000 | $ 1.05 | |||
Description
General part information
LMR66420-Q1 Series
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.
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.
Documents
Technical documentation and resources
