LM61430AASQRJRRQ1

The LM61430-Q1 is a high-performance DC/DC synchronous buck converter. This device features integrated high-side and low-side MOSFETs, capable of delivering an output current of up to 3A over a wide input voltage range from 3.0V to 36V. It can withstand a voltage of 42V, simplifying the design of input inrush current protection. The LM61430-Q1 can perform a soft recovery of the voltage drop, eliminating the need for output overshoot. The LM61430-Q1 is specifically designed to reduce EMI. This device has an adjustable SW node rise time and low EMI, and it comes in a VQFN-HR package with low switching node ringing and an easy-to-use, optimized pin arrangement. The switching frequency can be set or synchronized in the range of 200kHz to 2.2MHz, thus avoiding noise-sensitive frequency bands. Additionally, the frequency can be selected to improve efficiency at low operating frequencies or reduce the solution size at high operating frequencies. The automatic mode enables frequency foldback during light-load operation, achieving a no-load current consumption of only 7μA (typical) and high light-load efficiency. The seamless transition between PWM and PFM modes, along with ultra-low MOSFET on-resistance and an external bias input, ensures excellent efficiency across the entire load range.

Applications

• Automotive infotainment systems and instrument clusters: head units, media hubs, USB chargers, displays
• Automotive ADAS and body electronics

Key features

• AEC-Q100 qualified for automotive applications – Grade 1: -40°C to +150°C, TJ
• Functional safety capable
• Optimized for ultra-low EMI – HotRod™ package minimizes switching node ringing – Parallel input paths minimize parasitic inductance
• Adjustable SW node rise time
• Designed for automotive applications
• Supports 42V automotive load dump
• ±1% total output regulation accuracy
• VOUT adjustable from 1V to 95% of VIN
• High-efficiency power conversion across all loads – 7μA no-switching current at 13.5VIN, 3.3VOUT – External bias option for improved efficiency
• Scalable power supply support
• Pin-compatible with: LM61435-Q1 (36V, 3.5A, adjustable fSW) LM61440-Q1 (36V, 4A, adjustable fSW) LM61460-Q1 (36V, 6A, adjustable fSW)