Overview
The LMZ21701SILT nano module, produced by Texas Instruments, is a highly integrated step-down DC/DC converter designed for space-constrained applications. This module is capable of driving up to 1000 mA of load current and operates within an input voltage range of 3 V to 17 V, with an adjustable output voltage from 0.9 V to 6 V. The LMZ21701SILT features a compact 3.5 mm × 3.5 mm × 1.75 mm package, making it ideal for applications where board space is limited. It incorporates an integrated inductor and uses Texas Instruments' DCS-Control™ architecture, which combines the benefits of hysteretic, voltage mode, and current mode regulators for efficient and stable operation.
Key Specifications
| Parameter | Min | Max | Unit | |
|---|---|---|---|---|
| Input Voltage Range | 3 | 17 | V | |
| Output Voltage Range | 0.9 | 6 | V | |
| Output Current | 0 | 1000 | mA | |
| Junction Temperature Range | -40 | 125 | °C | |
| Efficiency | Up to 95% | % | ||
| Shutdown Current | 1.5 | μA | ||
| Quiescent Current | 17 | μA | ||
| Junction-to-Ambient Thermal Resistance (RθJA) | 42.6 | °C/W |
Key Features
- Compact Package: 3.5 mm × 3.5 mm × 1.75 mm MicroSiP™ package with an integrated inductor, ideal for space-constrained applications.
- Adjustable Output Voltage: Output voltage can be adjusted from 0.9 V to 6 V using a resistive voltage divider.
- High Efficiency: Up to 95% efficiency, ensuring minimal heat generation and high performance.
- Soft-Start and Tracking Function: Features a soft-start function and tracking capability to manage the output voltage rise and sequencing.
- Power Good and Enable Pins: Includes power good (PG) and enable (EN) pins for monitoring and controlling the module.
- Thermal Protection: Integrated thermal protection that shuts down the device if the junction temperature exceeds 160°C.
- Input Undervoltage Lockout (UVLO): Prevents the device from switching if the input voltage is below a certain threshold.
- Output Current Limit and Short Circuit Protection: Protects against heavy loads and output short circuits by monitoring and controlling the current.
Applications
- Point-of-Load Conversions: Suitable for point-of-load conversions from 3.3 V, 5 V, or 12 V input voltages.
- Space-Constrained Applications: Ideal for applications where board space is limited, such as in portable electronics, IoT devices, and other compact systems.
- LDO Replacement: Can be used as a replacement for linear voltage regulators (LDOs) to improve efficiency and reduce heat generation.
Q & A
- What is the input voltage range of the LMZ21701SILT?
The input voltage range is from 3 V to 17 V.
- What is the maximum output current of the LMZ21701SILT?
The maximum output current is up to 1000 mA.
- What is the junction temperature range of the LMZ21701SILT?
The junction temperature range is from -40°C to 125°C.
- How efficient is the LMZ21701SILT?
The LMZ21701SILT has an efficiency of up to 95%.
- What is the purpose of the soft-start function in the LMZ21701SILT?
The soft-start function controls the output voltage rise and can be used for tracking and sequencing.
- Does the LMZ21701SILT have thermal protection?
Yes, it has integrated thermal protection that shuts down the device if the junction temperature exceeds 160°C.
- What is the typical shutdown quiescent current of the LMZ21701SILT?
The typical shutdown quiescent current is 1.5 μA.
- Can the LMZ21701SILT be used as a replacement for LDOs?
Yes, it can be used as a replacement for linear voltage regulators (LDOs) to improve efficiency and reduce heat generation.
- What is the package type and size of the LMZ21701SILT?
The LMZ21701SILT comes in an 8-pin MicroSiP™ package with dimensions of 3.5 mm × 3.5 mm × 1.75 mm.
- How does the LMZ21701SILT handle output short circuits?
The device has integrated protection against heavy loads and output short circuits by monitoring and controlling the current.
