Overview
The LM61460AASQRJRRQ1, 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 a tolerance of up to 42 V to ease input surge protection design. It features integrated high-side and low-side MOSFETs, ensuring high efficiency power conversion across all loads. The LM61460AASQRJRRQ1 is optimized for minimal EMI, incorporating pseudo-random spread spectrum, adjustable SW node rise time, and a low-EMI VQFN-HR package.
Key Specifications
| Parameter | Value |
|---|---|
| Input Voltage Range | 3.0 V to 36 V (tolerant up to 42 V) |
| Output Current | Up to 6 A |
| Output Voltage Adjustment | Adjustable from 1 V to 95% of VIN |
| No Load Current | 7 µA (typical) at 13.5 VIN, 3.3 VOUT |
| Switching Frequency | 200 kHz to 2.2 MHz (synchronizable) |
| Efficiency | High efficiency at all loads; 83% PFM efficiency at 1 mA, 13.5 VIN, 5 VOUT |
| Package | Low-EMI VQFN-HR package |
| EMI Reduction Features | Pseudo-random spread spectrum, adjustable SW node rise time, low switch node ringing |
Key Features
- Integrated high-side and low-side MOSFETs for high efficiency power conversion.
- Soft recovery from dropout, eliminating output overshoot.
- External bias option for improved efficiency.
- Auto-mode with frequency foldback for high light load efficiency and low no-load current (7 µA typical).
- Seamless transition between PWM and PFM modes.
- Pseudo-random spread spectrum and adjustable SW node rise time for minimal EMI.
- Low-EMI VQFN-HR package with optimized pinout for ease of use.
- Switching frequency adjustable between 200 kHz and 2.2 MHz to avoid noise-sensitive frequency bands.
Applications
The LM61460AASQRJRRQ1 is designed for automotive and other high-performance applications requiring efficient and low-EMI DC-DC conversion. It is suitable for:
- Automotive power systems, including infotainment, navigation, and safety systems.
- Industrial power supplies requiring high efficiency and low noise.
- Scalable power supplies where flexibility in output voltage and current is necessary.
- Systems needing high reliability and tolerance to input surges and load dumps.
Q & A
- What is the input voltage range of the LM61460AASQRJRRQ1?
The input voltage range is 3.0 V to 36 V, with a tolerance of up to 42 V.
- What is the maximum output current of the LM61460AASQRJRRQ1?
The maximum output current is up to 6 A.
- How is the output voltage adjusted on the LM61460AASQRJRRQ1?
The output voltage is adjustable from 1 V to 95% of VIN.
- What is the no-load current consumption of the LM61460AASQRJRRQ1?
The no-load current consumption is typically 7 µA at 13.5 VIN and 3.3 VOUT.
- What are the EMI reduction features of the LM61460AASQRJRRQ1?
The device features pseudo-random spread spectrum, adjustable SW node rise time, and a low-EMI VQFN-HR package.
- What is the switching frequency range of the LM61460AASQRJRRQ1?
The switching frequency can be set or synchronized between 200 kHz and 2.2 MHz.
- How does the LM61460AASQRJRRQ1 handle light load conditions?
The device features auto-mode with frequency foldback, allowing high light load efficiency and low no-load current.
- Is the LM61460AASQRJRRQ1 pin-compatible with other Texas Instruments devices?
Yes, it is pin-compatible with devices like the LM61440-Q1, LM62440-Q1, and LMQ61460-Q1.
- What are the key benefits of using the LM61460AASQRJRRQ1 in automotive applications?
The key benefits include high efficiency, low EMI, tolerance to input surges, and high reliability.
- Can the LM61460AASQRJRRQ1 be used in industrial power supplies?
Yes, it is suitable for industrial power supplies requiring high efficiency and low noise.
