Overview
The LMZ21700 Nano Module, produced by Texas Instruments, is a compact and efficient step-down DC/DC converter designed for space-constrained applications. This module is capable of driving up to 650 mA of load current and operates within an input voltage range of 3 V to 17 V, with an output voltage range of 0.9 V to 6 V. The LMZ21700 features an innovative MicroSiP™ package, integrating a synchronous buck converter IC and a power inductor within a small 3.5 mm × 3.5 mm × 1.75 mm footprint. This design ensures high efficiency, with up to 95% efficiency in full load conditions, and seamless transition between PWM and Power Save Modes to maintain high efficiency across various load conditions.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Input Voltage Range | 3 | - | 17 | V |
| Output Voltage Range | 0.9 | - | 6 | V |
| Output Current | - | - | 650 | mA |
| Efficiency (Full Load) | - | 88 | - | % |
| Efficiency (Light Load) | - | 72 | - | % |
| Junction Temperature Range | -40 | - | 125 | °C |
| Quiescent Current | - | 17 | - | μA |
| Shutdown Current | - | 1.5 | - | μA |
| Package Size | - | - | - | 3.5 mm × 3.5 mm × 1.75 mm |
Key Features
- Adjustable output voltage between 0.9 V and 6 V
- Integrated compensation and soft-start function
- Power Good and Enable pins for sequencing and control
- Seamless transition to Power Save Mode for high efficiency at light loads
- Input undervoltage lockout (UVLO) and thermal shutdown protection
- Output current limit and short circuit protection
- Compact MicroSiP™ package with embedded inductor
- High efficiency up to 95% in full load conditions
Applications
- Point of Load (POL) conversions from 3.3 V, 5 V, or 12 V input voltage
- Space-constrained applications requiring high efficiency and compact design
- LDO (Linear Dropout Regulator) replacement for higher efficiency and better thermal performance
Q & A
- What is the input voltage range of the LMZ21700?
The input voltage range of the LMZ21700 is from 3 V to 17 V.
- What is the maximum output current of the LMZ21700?
The LMZ21700 can drive up to 650 mA of load current.
- How is the output voltage of the LMZ21700 set?
The output voltage is set using a resistive divider connected to the feedback (FB) pin.
- What are the key protection features of the LMZ21700?
The LMZ21700 features input undervoltage lockout (UVLO), thermal shutdown, and output current limit and short circuit protection.
- How efficient is the LMZ21700 at full load?
The LMZ21700 achieves up to 95% efficiency at full load conditions.
- What is the typical quiescent current of the LMZ21700?
The typical quiescent current is 17 μA.
- What is the shutdown current of the LMZ21700?
The shutdown current is typically 1.5 μA.
- How does the LMZ21700 transition between PWM and Power Save Modes?
The transition between PWM and Power Save Modes is seamless, with minimal effect on the output voltage, to maintain high efficiency across various load conditions.
- What is the package size of the LMZ21700?
The LMZ21700 comes in a compact MicroSiP™ package measuring 3.5 mm × 3.5 mm × 1.75 mm.
- Can the LMZ21700 be used for LDO replacement?
