Overview
The LM61460-Q1, produced by Texas Instruments, is an automotive-focused, high-performance DC-DC synchronous step-down converter. This device is designed to deliver up to 6 A of output current over a wide input range of 3.0 V to 36 V, with tolerance for 42 V to ease input surge protection design. It features integrated high-side and low-side MOSFETs and implements soft recovery from dropout, eliminating output overshoot. The LM61460-Q1 is optimized for minimal EMI, incorporating pseudo-random spread spectrum, adjustable SW node rise time, and a low-EMI VQFN-HR package. It is AEC-Q100 qualified for automotive applications and operates over a junction temperature range of –40°C to +150°C.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | 3.0 to 36 | V |
| Maximum Input Voltage Tolerance | 42 | V |
| Output Current Range | 0 to 6 | A |
| Output Voltage Range (Adjustable) | 1 to 0.95 * VIN | V |
| Switching Frequency Range | 200 kHz to 2.2 MHz | kHz |
| Operating Junction Temperature Range | –40 to +150 | °C |
| No Load Current (Typical) | 7 µA | µA |
| Package Type | VQFN-HR (14 pins) | |
| Package Size | 4.00 mm × 3.50 mm | mm |
Key Features
- Integrated high-side and low-side MOSFETs for high efficiency and reduced component count.
- Pseudo-random spread spectrum and adjustable SW node rise time for minimal EMI.
- Low-EMI VQFN-HR package with optimized pinout and low switch node ringing.
- Auto-mode with frequency foldback for high light load efficiency and low unloaded current consumption.
- Seamless transition between PWM and PFM modes for exceptional efficiency across the entire load range.
- External bias input option for improved efficiency.
- AEC-Q100 qualified for automotive applications with a temperature grade 1: –40°C to +150°C.
- Functional Safety-Capable with documentation available to aid in functional safety system design.
- Supports 42-V automotive load dump and has ±1% total output regulation accuracy.
Applications
- Automotive infotainment and cluster systems: head unit, media hub, USB charge, display.
- Automotive ADAS (Advanced Driver Assistance Systems) and body electronics.
- Other automotive applications requiring high-performance, low-EMI DC-DC conversion.
Q & A
- What is the input voltage range of the LM61460-Q1?
The input voltage range is from 3.0 V to 36 V, with tolerance for 42 V input surges.
- What is the maximum output current of the LM61460-Q1?
The maximum output current is up to 6 A.
- What are the key EMI mitigation features of the LM61460-Q1?
The device features pseudo-random spread spectrum, adjustable SW node rise time, and a low-EMI VQFN-HR package to minimize EMI.
- What is the operating junction temperature range of the LM61460-Q1?
The operating junction temperature range is from –40°C to +150°C.
- Is the LM61460-Q1 AEC-Q100 qualified?
- What are the typical no-load current and shutdown current of the LM61460-Q1?
The typical no-load current is 7 µA, and the shutdown current is very low, typically in the nA range.
- Can the switching frequency of the LM61460-Q1 be adjusted or synchronized?
- What package type and size does the LM61460-Q1 come in?
The LM61460-Q1 comes in a 14-pin VQFN-HR package with dimensions of 4.00 mm × 3.50 mm.
- What are some typical applications of the LM61460-Q1?
- Does the LM61460-Q1 support functional safety requirements?
