1 Features

• Functional Safety-Capable

– Documentation available to aid functional safety system design

• AEC-Q100 qualified for automotive applications

– Device temperature grade 1: –40°C to 125°C ambient operating temperature range

• Wide operating input voltage: 3V to 36V (42V absolute maximum)

• Programmable output voltage options available in fixed 3.3V/ADJ and 5V/ADJ

– Adjustable output voltage range from 1V to 20V

• Low minimum on time tON (30ns typical)

• Optimized for low electromagnetic interference (EMI) requirements:

– Facilitates CISPR 25 class 5 compliance

– Low inductance HotRod™ QFN package

– Advanced spread spectrum options available

• Switching frequency from 200kHz – 2.2MHz

• FPWM, PFM, or external frequency synchronization available

• Ultra-low quiescent current

– Shutdown current: 0.7μA

– Standby current: 5μA

• Optimized control loop for low output capacitance

• Designed for scalable power supplies

– Pin compatible with LMR60406-Q1, LMR60420-Q1, LMR60430-Q1, LMR60440-Q1, LMR60441-Q1, LMR60450-Q1, and LMR60460-Q1

• Power-Good output for power sequencing

2 Applications

• Automotive infotainment and cluster

• Automotive driver assistance systems

• Automotive body applications

3 Description

The LMR60410-Q1 is a 3V to 36V (42V transient), 1A, automotive-grade synchronous buck converter. The LMR60410-Q1 is available in an ultra compact 2.5mm × 2mm, HotRod™ QFN-9 package with wettable flanks available, that helps minimize inductance and achieve low EMI performance to facilitate qualification of automotive and other noise-sensitive designs.

All device variants are capable of output voltages ranging from 1V to 20V in adjustable output configuration. Each variant is also capable of delivering a fixed output voltage by connecting the output voltage node directly to the feedback pin. The Device Comparison Table provides details on the fixed output voltage options. The current-mode control architecture with 30ns minimum on-time allows high conversion ratios at high frequencies, fast transient response, and excellent load and line regulation.

Open drain power-good output facilitates power sequencing requirements. The MODE/SYNC pin of the LMR60410-Q1 allows the user to select between forced pulse width modulation (FPWM), auto mode, or external synchronization mode of operation.

The LMR60410-Q1 is designed to offer reduced output capacitance leading to compact PCB layout and system cost savings. The LMR60410-Q1 is a part of a family of pin-compatible devices ranging in current levels from 0.6A to 6A.