Overview
The LM25011Q1MY/NOPB is a high-voltage, constant on-time step-down switching regulator produced by Texas Instruments. This regulator is designed to provide efficient and reliable power conversion, capable of supplying up to 2 A of load current. It features an integrated 2-A N-Channel Buck switch and supports an input operating voltage range from 6 V to 42 V, with an absolute maximum input rating of 45 V. The device is particularly suited for applications requiring low-cost, efficient buck bias regulation with fast load transient response and stable operation with ceramic output capacitors.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Operating Voltage Range | 6 V to 42 V | V |
| Absolute Maximum Input Rating | 45 V | V |
| Output Current | Up to 2 A | A |
| Adjustable Output Voltage | 2.51 V to 40 V | V |
| Switching Frequency | Adjustable up to 2 MHz | Hz |
| Package Type | MSOP-10, HVSSOP-10 | |
| Junction-to-ambient Thermal Resistance | 48 °C/W | °C/W |
| Operating Junction Temperature | -40°C to 150°C | °C |
Key Features
- Constant on-time regulation principle requiring no loop compensation, resulting in fast load transient response.
- Integrated 2-A N-Channel Buck switch.
- Adjustable current limit allows for smaller inductor.
- Adjustable output voltage from 2.51 V.
- Low output ripple.
- VIN under-voltage lock-out.
- Adjustable soft-start timing.
- Thermal shutdown.
- Gate drive pre-charge and under-voltage lock-out.
- Maximum duty cycle limit.
- Power Good (PGD) output indicates when the output voltage has increased to within 5% of the expected regulation value.
- Stable operation with ceramic output capacitors.
Applications
- Automotive safety systems.
- Infotainment systems.
- Telecommunication equipment.
- Front camera systems.
Q & A
- What is the input operating voltage range of the LM25011Q1MY/NOPB?
The input operating voltage range is from 6 V to 42 V.
- What is the maximum output current of the LM25011Q1MY/NOPB?
The maximum output current is up to 2 A.
- Can the switching frequency of the LM25011Q1MY/NOPB be adjusted?
- What type of package is the LM25011Q1MY/NOPB available in?
The device is available in MSOP-10 and HVSSOP-10 packages.
- Does the LM25011Q1MY/NOPB require loop compensation?
No, the constant on-time regulation principle does not require loop compensation.
- What is the purpose of the Power Good (PGD) output?
The PGD output indicates when the output voltage has increased to within 5% of the expected regulation value.
- Is the LM25011Q1MY/NOPB suitable for high-temperature environments?
The device operates over a junction temperature range of -40°C to 150°C.
- What are some of the key features of the LM25011Q1MY/NOPB?
Key features include adjustable current limit, low output ripple, VIN under-voltage lock-out, and thermal shutdown.
- In which applications is the LM25011Q1MY/NOPB commonly used?
Common applications include automotive safety systems, infotainment systems, telecommunication equipment, and front camera systems.
- How does the LM25011Q1MY/NOPB handle thermal issues?
The device includes thermal shutdown to protect against overheating.
