Overview
The LMZ14203TZE-ADJ/NOPB is a SIMPLE SWITCHER power module from Texas Instruments, designed as an easy-to-use step-down DC-DC solution. This module can drive up to 3-A load with exceptional power conversion efficiency, line and load regulation, and output accuracy. It is available in an innovative package that enhances thermal performance and allows for both hand and machine soldering. The LMZ14203 can accept an input voltage rail between 6 V and 42 V and deliver an adjustable and highly accurate output voltage as low as 0.8 V. The module requires only three external resistors and four external capacitors to complete the power solution, making it a reliable and robust design for various applications.
Key Specifications
| Parameter | Minimum | Typical | Maximum | Unit |
|---|---|---|---|---|
| Input Voltage Range | 6 | - | 42 | V |
| Output Voltage Range | 0.8 | - | 6 | V |
| Output Current | - | - | 3 | A |
| Maximum Total Output Power | - | - | 18 | W |
| Efficiency | - | - | up to 90% | % |
| Junction Temperature Range | -40 | - | 125 | °C |
| Switching Frequency | - | - | up to 1 MHz | Hz |
Key Features
- Integrated Shielded Inductor & Simple PCB Layout
- Flexible Start-Up Sequencing Using External Soft-Start and Precision Enable
- Protection Against Inrush Currents and Faults Such as Input UVLO and Output Short Circuit
- –40°C to 125°C Junction Temperature Range
- Single Exposed Pad and Standard Pinout for Easy Mounting and Manufacturing
- Fast Transient Response for Powering FPGAs and ASICs
- Low Output Voltage Ripple
- Pin-to-Pin Compatible Family: LMZ1420x (42 V Maximum 3 A, 2 A, 1 A) and LMZ1200x (20 V Maximum 3 A, 2 A, 1 A)
- Fully Enabled for WEBENCH® Power Designer
- Operates at High Ambient Temperature With No Thermal Derating
- High Efficiency Reduces System Heat Generation
- Low Radiated Emissions (Electromagnetic Interference [EMI]) Tested With EN55022 Class B Standard
- Passes 10-V/m Radiated Immunity EMI Test Standard EN61000 4-3
Applications
- Point of Load Conversions From 12-V and 24-V Input Rail
- Space Constrained and High Thermal Requirement Applications
- Negative Output Voltage Applications (See AN-2027 SNVA425)
Q & A
- What is the input voltage range of the LMZ14203? The input voltage range is from 6 V to 42 V.
- What is the maximum output current of the LMZ14203? The maximum output current is up to 3 A.
- What is the output voltage range of the LMZ14203? The output voltage range is from 0.8 V to 6 V.
- What are the key protection features of the LMZ14203? The key protection features include thermal shutdown, input UVLO, output overvoltage protection, short-circuit protection, output current limit, and start-up into a prebiased output.
- How does the LMZ14203 handle thermal protection? The LMZ14203 has an internal Thermal Shutdown circuit that activates at 165 °C (typical) and releases at 145 °C (typical hysteresis = 20 °C).
- Can the LMZ14203 be used in high ambient temperature environments? Yes, it operates at high ambient temperatures with no thermal derating.
- What is the efficiency of the LMZ14203? The efficiency of the LMZ14203 is up to 90%.
- Is the LMZ14203 compatible with WEBENCH Power Designer? Yes, it is fully enabled for WEBENCH Power Designer.
- What are the EMI standards that the LMZ14203 complies with? The LMZ14203 complies with EN55022 Class B Standard and passes the 10-V/m Radiated Immunity EMI Test Standard EN61000 4-3.
- How many external components are required to complete the power solution with the LMZ14203? Only three external resistors and four external capacitors are required.
