Overview
The LMZ10501SILR from Texas Instruments is a highly integrated, 1-A step-down DC-DC power module designed for space-constrained applications. This nano module operates within an input voltage range of 2.7 V to 5.5 V and can deliver an output voltage between 0.6 V and 3.6 V. It features a compact 8-pin µSIP package with an integrated inductor, making it an ideal solution for point-of-load conversions and low-noise applications.
The module is easy to use, requiring only a few external components for basic operation, including an input capacitor, an output capacitor, a small VCON filter capacitor, and two resistors. It incorporates advanced protection features such as internal current limit, soft-start function, current overload protection, and thermal shutdown.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | 2.7 to 5.5 | V |
| Output Voltage Range | 0.6 to 3.6 | V |
| Output Current | Up to 1 | A |
| Efficiency | Up to 95% | % |
| Switching Frequency | Fixed 2.0 MHz | Hz |
| Package Type | 8-pin µSIP | - |
| Package Size | 3.00 mm × 2.60 mm | mm |
| ESD Rating (HBM) | ±1000 | V |
| ESD Rating (CDM) | ±250 | V |
| Thermal Shutdown Temperature | 150°C (typ) | °C |
Key Features
- High Efficiency: Up to 95% efficiency, ensuring minimal heat generation and high performance.
- Compact Design: 8-pin µSIP package with an integrated inductor, ideal for space-constrained applications.
- Advanced Protection: Internal current limit, soft-start function, current overload protection, and thermal shutdown.
- Dynamic Output Voltage Scaling: The output voltage can be dynamically adjusted between 0.6 V and 3.6 V by driving the VCON pin.
- Low Noise Operation: Suitable for applications requiring low output noise.
- High Duty Cycle Operation: Extends the output regulation range to the minimum possible input voltage.
- Input Under Voltage Detection: Ensures proper operation during startup, shutdown, and input supply brownout conditions.
Applications
- Point of Load Conversions: From 3.3-V and 5-V rails.
- Space Constrained Applications: Ideal for designs where board space is limited.
- Low Output Noise Applications: Suitable for applications requiring minimal noise, such as in audio and video systems.
- General DC-DC Conversion: For various electronic devices requiring efficient and reliable power conversion.
Q & A
- What is the input voltage range of the LMZ10501SILR?
The input voltage range is from 2.7 V to 5.5 V.
- What is the maximum output current of the LMZ10501SILR?
The maximum output current is up to 1 A.
- What is the efficiency of the LMZ10501SILR?
The efficiency can be up to 95%.
- What type of package does the LMZ10501SILR come in?
The module comes in an 8-pin µSIP package.
- How is the output voltage set in the LMZ10501SILR?
The output voltage is set using a resistive divider between the built-in reference voltage VREF and the control pin VCON.
- Does the LMZ10501SILR have built-in protection features?
Yes, it includes internal current limit, soft-start function, current overload protection, and thermal shutdown.
- What is the thermal shutdown temperature of the LMZ10501SILR?
The thermal shutdown temperature is typically 150°C.
- Can the output voltage of the LMZ10501SILR be dynamically adjusted?
Yes, the output voltage can be dynamically adjusted between 0.6 V and 3.6 V by driving the VCON pin.
- What type of capacitors are recommended for the input and output filters?
Low ESR multi-layer ceramic capacitors (MLCC) are recommended.
- How does the LMZ10501SILR handle output short circuit conditions?
The module features a second level of short circuit protection, engaging in a hiccup mode if the output voltage falls below a certain threshold.
