Overview
The LMZ22003TZX/NOPB, produced by Texas Instruments, is a 3-A SIMPLE SWITCHER® power module designed for efficient step-down DC-DC conversions. This module is part of the LMZ22003 family and is known for its ease of use and robust design. It can accept input voltages ranging from 6 V to 20 V and deliver an adjustable output voltage as low as 0.8 V. The LMZ22003 is packaged in an innovative NDW (7-pin) package that enhances thermal performance and allows for both hand and machine soldering.
Key Specifications
| Parameter | Minimum | Maximum | Unit |
|---|---|---|---|
| Input Voltage Range | 6 | 20 | V |
| Output Voltage Range | 0.8 | 6 | V |
| Output Current | 3 | A | |
| Maximum Total Output Power | 18 | W | |
| Efficiency | 92% | ||
| Junction Temperature Range | –40 | 125 | °C |
| Thermal Shutdown Temperature | 165 | °C | |
| Peak Reflow Temperature | 245 | °C | |
| ESD Rating (HBM) | ±2000 | V |
Key Features
- Integrated shielded inductor for reduced EMI and simpler PCB layout.
- Frequency synchronization input (650 kHz to 950 kHz) for noise reduction and system synchronization.
- Flexible start-up sequencing using external soft-start, tracking, and precision enable.
- Protection against inrush currents and faults, including thermal shutdown, programmable input undervoltage lockout, output overvoltage protection, short circuit protection, and output current limit.
- Fast transient response suitable for powering FPGAs and ASICs.
- Low component count, requiring only five external components.
- Uses PCB as heat sink, eliminating the need for airflow.
- Pin compatible with LMZ23605/LMZ23603/LMZ22005.
- Fully enabled for WEBENCH® Power Designer.
Applications
- Point-of-load conversions from 12-V input rail.
- Time-critical projects requiring fast development and deployment.
- Space-constrained and high thermal requirement applications.
- Negative output voltage applications.
- Systems requiring high efficiency and low output voltage ripple.
Q & A
- What is the input voltage range of the LMZ22003?
The input voltage range is from 6 V to 20 V. - What is the maximum output current of the LMZ22003?
The maximum output current is up to 3 A. - What is the output voltage range of the LMZ22003?
The output voltage range is from 0.8 V to 6 V. - Does the LMZ22003 have thermal protection?
Yes, it has an internal thermal shutdown circuit that activates at 165°C. - Can the LMZ22003 start up into a prebiased output?
Yes, it can properly start up into a prebiased output. - What is the efficiency of the LMZ22003?
The efficiency can be up to 92%. - Does the LMZ22003 require external cooling?
No, it uses the PCB as a heat sink and does not require airflow. - Is the LMZ22003 compatible with other Texas Instruments power modules?
Yes, it is pin compatible with LMZ23605/LMZ23603/LMZ22005. - What tools can be used to design with the LMZ22003?
The WEBENCH® Power Designer can be used to generate complete designs. - What kind of protection features does the LMZ22003 have?
The LMZ22003 has protection features including thermal shutdown, programmable input undervoltage lockout, output overvoltage protection, short circuit protection, and output current limit.
