Overview
The LMZ22008TZX/NOPB from Texas Instruments is a 8-A SIMPLE SWITCHER® power module designed for high-efficiency point-of-load (PoL) conversions. This module is part of the LMZ22008 series and is known for its ease of use and robust design. It can accept an input voltage range of 6 V to 20 V and deliver an adjustable output voltage from 0.8 V to 6 V. The LMZ22008 is integrated with a shielded inductor, which enhances thermal performance and simplifies PCB layout. It is particularly suited for time-critical projects and space-constrained applications due to its compact package and high thermal efficiency.
Key Specifications
| Parameter | Minimum | Typical | Maximum | Unit |
|---|---|---|---|---|
| Input Voltage Range | 6 | - | 20 | V |
| Output Voltage Range | 0.8 | - | 6 | V |
| Output Current | - | - | 8 | A |
| Maximum Total Output Power | - | - | 40 | W |
| Efficiency | - | - | Up to 92% | % |
| Junction Temperature Range | -40 | - | 125 | °C |
| Switching Frequency Range | 314 kHz | 359 kHz | 600 kHz | kHz |
| Package Size | - | - | 15.00 mm × 15.00 mm | mm |
Key Features
- Integrated Shielded Inductor: Enhances thermal performance and simplifies PCB layout.
- Simple PCB Layout: Requires only two external resistors and external capacitors to complete the power solution.
- Current Sharing Capability: Allows multiple modules to share the load current for higher current applications.
- Frequency Synchronization: Synchronize the PWM operating frequency to an external frequency source between 314 kHz and 600 kHz.
- Protection Features: Includes thermal shutdown, programmable input undervoltage lockout, output overvoltage protection, short circuit protection, and output current limit.
- Flexible Start-up Sequencing: Supports external soft-start, tracking, and precision enable.
- Low Radiated Emissions (EMI): Tested to EN55022 standards.
- No External Heat Sink Required: Efficient thermal design minimizes the need for additional cooling.
Applications
- Point-of-load Conversions: Ideal for converting from 12-V input rails.
- Time-Critical Projects: Suitable due to its ease of use and quick implementation.
- Space Constrained and High Thermal Requirement Applications: Compact package and high thermal efficiency make it ideal for such environments.
- Negative Output Voltage Applications: Can be configured for negative output voltage requirements.
Q & A
- What is the input voltage range of the LMZ22008?
The input voltage range is from 6 V to 20 V.
- What is the maximum output current of the LMZ22008?
The maximum output current is up to 8 A.
- What is the output voltage range of the LMZ22008?
The output voltage range is from 0.8 V to 6 V.
- Does the LMZ22008 require an external heat sink?
No, it does not require an external heat sink due to its efficient thermal design.
- Can multiple LMZ22008 modules be used in parallel for higher current applications?
- What is the switching frequency range of the LMZ22008?
The switching frequency range is from 314 kHz to 600 kHz.
- What protection features are included in the LMZ22008?
The module includes thermal shutdown, programmable input undervoltage lockout, output overvoltage protection, short circuit protection, and output current limit.
- Is the LMZ22008 suitable for space-constrained applications?
- Can the LMZ22008 be synchronized with an external frequency source?
- What is the junction temperature range of the LMZ22008?
The junction temperature range is from -40°C to 125°C.
